{"id":261,"date":"2016-05-19T19:57:28","date_gmt":"2016-05-19T19:57:28","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/waymaker-level2-english\/?post_type=chapter&#038;p=261"},"modified":"2016-11-08T00:27:17","modified_gmt":"2016-11-08T00:27:17","slug":"text-nouns","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/chapter\/text-nouns\/","title":{"raw":"Nouns","rendered":"Nouns"},"content":{"raw":"Nouns are a\u00a0diverse group of words, and they are very common in English. Nouns are a category of words defining <strong>things<\/strong>\u2014the name of people\u00a0(Dr. Sanders, lawyers), places (Kansas, factory, home), things (scissors, sheet music, book), or ideas (love, truth, beauty, intelligence).\r\n<div class=\"textbox exercises\">\r\n<h3>Identifying Nouns<\/h3>\r\nLet's look at the following examples to get a better idea of how nouns work in sentences. All of the nouns have been bolded in blue:\r\n<ul>\r\n \t<li>The one <span style=\"color: #0000ff;\"><strong>experiment<\/strong><\/span> that has been given the most <span style=\"color: #0000ff;\"><strong>attention<\/strong><\/span> in the <span style=\"color: #0000ff;\"><strong>debate<\/strong><\/span> on <span style=\"color: #0000ff;\"><strong>saccharin<\/strong><\/span> is the 1977 Canadian <span style=\"color: #0000ff;\"><strong>study<\/strong><\/span> done on <span style=\"color: #0000ff;\"><strong>rats<\/strong><\/span>.<\/li>\r\n \t<li>The multi-fuel <span style=\"color: #0000ff;\"><strong>capacity<\/strong><\/span> of the Stirling <span style=\"color: #0000ff;\"><strong>engine<\/strong><\/span> gives it a versatility not possible in the internal combustion <span style=\"color: #0000ff;\"><strong>engine<\/strong><\/span>.<\/li>\r\n \t<li>The regenerative cooling <span style=\"color: #0000ff;\"><strong>cycle<\/strong><\/span> in the <span style=\"color: #0000ff;\"><strong>engines<\/strong><\/span> of the Space <span style=\"color: #0000ff;\"><strong>Shuttle<\/strong><\/span> is made up of high pressure <span style=\"color: #0000ff;\"><strong>hydrogen<\/strong><\/span> that flows in <span style=\"color: #0000ff;\"><strong>tubes<\/strong><\/span> connecting the <span style=\"color: #0000ff;\"><strong>nozzle<\/strong><\/span> and the combustion <span style=\"color: #0000ff;\"><strong>chamber<\/strong><\/span>.<\/li>\r\n<\/ul>\r\n<\/div>\r\nThere are a lot of different categories of nouns, but before we get in too deep, let's talk about pluralization.\r\n<h2>Pluralization<\/h2>\r\n<img class=\"alignright wp-image-2289\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-300x238.png\" sizes=\"(max-width: 126px) 100vw, 126px\" srcset=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-300x238.png 300w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-65x52.png 65w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-225x178.png 225w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-350x277.png 350w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM.png 357w\" alt=\"Icon of two men wearing suits\" width=\"126\" height=\"100\" \/>A plural noun\u00a0indicates that there is more than one of that noun (while a singular noun indicates that there is just one of the noun). Most plural forms are created by simply adding an\u00a0<em>-s<\/em> or -<em>es<\/em> to the end of the singular word.\u00a0For example, there's one <strong>dog<\/strong> (singular), but three <strong>dogs<\/strong> (plural). However,\u00a0English has both regular and irregular plural nouns. Regular plurals follow this rule (and other similar rules), but\u00a0irregular plurals are, well, not regular and don't follow a \"standard\" rule.\r\n<h3>Regular\u00a0Plurals<\/h3>\r\nLet's start with regular plurals: <strong>regular plural nouns<\/strong> use established\u00a0patterns to\u00a0indicate there is more than one of a thing. As was\u00a0mentioned earlier, we add the plural suffix -<em>s<\/em> to most words (<em>cats<\/em>,\u00a0<em>bears<\/em>,\u00a0<em>zebras<\/em>).\u00a0However, after sounds <em>s<\/em>, <em>z<\/em>, <em>sh<\/em>, <em>ch<\/em>, and <em>j<\/em>, we add the plural suffix -<em>es <\/em>(<em>classes<\/em>,\u00a0<em>sashes<\/em>,\u00a0<em>foxes<\/em>). Some words that end in\u00a0<em>z<\/em> also double their ending\u00a0consonant, like\u00a0<em>quizzes<\/em>.\r\n\r\nWe also add the plural suffix -<em>es<\/em> to most words that end in <em>o<\/em>\u00a0(<em>potatoes<\/em>, <em>heroes<\/em>, <em>mosquitoes<\/em>). However, when the words have a foreign origin (e.g.,Latin, Greek, Spanish), we \u00a0just add the plural suffix -<em>s<\/em>\u00a0(<em>tacos<\/em>, <em>avocados<\/em>, <em>maestros<\/em>).\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Practice<\/h3>\r\nLook at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:\r\n<ul>\r\n \t<li><em>vultures<\/em> is the plural of\u00a0<em>vulture<\/em>.\u00a0Despite\u00a0<em>vultures<\/em> ending in -<em>es,\u00a0<\/em>you simply add an -<em>s<\/em> to form the plural, as the\u00a0<em>e<\/em> is a part of the singular word.<\/li>\r\n<\/ul>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">trees<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">sopranos<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">watches<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>tomatoes<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>waltzes<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>wrists<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[reveal-answer q=\"633086\"]Show Answer[\/reveal-answer]\r\n[hidden-answer a=\"633086\"]\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">trees<\/td>\r\n<td width=\"30%\"><em>trees<\/em> is the plural of\u00a0<em>tree<\/em><em>s<\/em>. -<em>s<\/em>\u00a0is added<\/td>\r\n<td width=\"3%\">sopranos<\/td>\r\n<td width=\"30%\"><em>sopranos<\/em> is the plural of\u00a0<em>soprano<\/em>. -<em>s<\/em>\u00a0is added despite the word ending in an\u00a0<em>o<\/em>, because the word is borrowed from Italian<\/td>\r\n<td width=\"3%\">watches<\/td>\r\n<td width=\"30%\"><em>watches<\/em> is the plural of\u00a0<em>watch<\/em>. -<em>es<\/em> is added because the word ends in\u00a0<em>ch<\/em><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>tomatoes<\/td>\r\n<td><em>tomatoes<\/em> is the plural of\u00a0<em>tomato<\/em>. -<em>es<\/em> is added because it's a native English word<\/td>\r\n<td>waltzes<\/td>\r\n<td><em>waltzes<\/em> is the plural of\u00a0<em>waltz<\/em>. -<em>es<\/em> is added because the word ends in\u00a0<em>z<\/em><\/td>\r\n<td>wrists<\/td>\r\n<td><em>wrists<\/em>\u00a0is the plural of\u00a0<i>wrist<\/i>. -<em>s<\/em> is added<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\nWhen a word ends in <em>y<\/em>\u00a0and there is a consonant before <em>y<\/em>, we change the <em>y<\/em>\u00a0to <em>i<\/em>\u00a0and add -<em>es<\/em>. Thus\u00a0<em>sky<\/em> becomes\u00a0<em>skies<\/em>.\u00a0When a word ends in -<em>f<\/em> or -<em>fe<\/em>, we change the <em>f<\/em> to <em>v<\/em>\u00a0and add -<em>es<\/em>. Thus\u00a0<em>calf<\/em>\u00a0becomes\u00a0<em>calves<\/em>.\r\n\r\nHowever, there are some exceptions to these rules:\r\n<ul>\r\n \t<li><em>donkeys<\/em> not\u00a0<em>donkeies<\/em>;\u00a0<em>alloys<\/em> not\u00a0<em>alloies<\/em>.\r\n<ul>\r\n \t<li>If the\u00a0<em>y<\/em> follows another vowel, you simply add an -<em>s<\/em>.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t<li><em>cliffs<\/em> not\u00a0<em>clivves<\/em>; <em>chiefs<\/em> not\u00a0<em>chieves<\/em>\r\n<ul>\r\n \t<li>If there are two terminal\u00a0<em>f<\/em>s<em>, <\/em>you simply add an -<em>s<\/em>.<\/li>\r\n \t<li>If you still pronounce the\u00a0<em>f<\/em> in the plural, then the spelling should retain the\u00a0<em>f<\/em> as well.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Practice<\/h3>\r\nLook at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:\r\n<ul>\r\n \t<li><em>fries<\/em> is the plural of\u00a0<em>fry<\/em>. To form the plural, the\u00a0<em>y<\/em> was changed to an\u00a0<em>i<\/em>, and we added\u00a0-<em>es<\/em>.<\/li>\r\n<\/ul>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">reefs<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">leaves<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">flies<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>cafes<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>caves<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>boys<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[reveal-answer q=\"633087\"]Show Answer[\/reveal-answer]\r\n[hidden-answer a=\"633087\"]\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">reefs<\/td>\r\n<td width=\"30%\"><em>reefs<\/em> is the plural of\u00a0<em>reef<\/em>. -<em>s<\/em> is added. It is an exception to the rule.<\/td>\r\n<td width=\"3%\">leaves<\/td>\r\n<td width=\"30%\"><em>leaves<\/em> is the plural of\u00a0<em>leaf<\/em>. the\u00a0<em>f<\/em>\u00a0is changed to a\u00a0<em>v<\/em>, and\u00a0<em>-es<\/em>\u00a0is added<\/td>\r\n<td width=\"3%\">flies<\/td>\r\n<td width=\"30%\"><em>flies\u00a0<\/em>is the plural of\u00a0<em>fly<\/em>.\u00a0the\u00a0<em>y\u00a0<\/em> is changed to an\u00a0<em>i<\/em>, and -<em>es<\/em> is added<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>cafes<\/td>\r\n<td><em>cafes<\/em> is the plural of <em>cafe<\/em>. the -<em>s<\/em> is added (note that\u00a0<em>cafe<\/em> is sometimes spelled with an accent mark:\u00a0<em>caf\u00e9<\/em>)<\/td>\r\n<td>caves<\/td>\r\n<td><em>caves<\/em> is the plural of\u00a0<em>cave<\/em>. the -<em>s<\/em> is added<\/td>\r\n<td>boys<\/td>\r\n<td><em>boys<\/em> is the plural of\u00a0<em>boy<\/em>. -<em>s<\/em> is added because the\u00a0<em>y<\/em> follows a vowel<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\n<h3>Irregular Plurals<\/h3>\r\n<strong>Irregular plurals<\/strong>, unlike regular plurals,\u00a0don't necessarily follow any particular pattern\u2014instead, they follow a lot of\u00a0<em>different<\/em> patterns. Because of this, irregular plurals require a lot of memorization; you need to remember which nouns belong to which type of pluralization.\u00a0Mastering irregulars\u00a0uses a different region\u00a0of your\u00a0brain than regular pluralization:\u00a0it's an entirely different skill set than regular pluralization. So don't get too frustrated if you can't remember the correct plural. If you're ever in doubt, the dictionary is there for you.\r\n\r\nThe first kind of irregular plural we'll talk about is the <strong>no-change<\/strong> or <strong>base plural<\/strong>. In these words, the\u00a0singular noun has the exact same form as the plural (<em>sheep<\/em>,\u00a0<em>fish<\/em>,\u00a0<em>deer<\/em>, <em>moose<\/em>). Most no-change plurals are types of animals. The next type of irregular is the <strong>mid-word vowel change<\/strong>:\r\n\r\nhttps:\/\/youtu.be\/VdLOP9teko4\r\n<div class=\"textbox shaded\"><strong>Note:<\/strong> The plural for a computer mouse (as opposed to the fuzzy animal) can either be <em>mice<\/em> or <em>mouses<\/em>. Some people prefer\u00a0<em>mouses<\/em> as it creates some differentiation between the two words.<\/div>\r\nAnd last we have\u00a0<strong>plural -<em>en<\/em>.<\/strong> In these words -<em>en<\/em> is used as the plural ending instead of -<em>s<\/em> or\u00a0<em>-es<\/em>.\r\n<ul>\r\n \t<li>child\u00a0\u2192 children<\/li>\r\n \t<li>ox\u00a0\u2192 oxen<\/li>\r\n \t<li>brother\u00a0\u2192 brethren<\/li>\r\n \t<li>sister\u00a0\u2192 sistren<\/li>\r\n<\/ul>\r\n<div class=\"textbox shaded\"><strong>Note:<\/strong>\u00a0<em>Brethren<\/em>\u00a0and <em>sistren<\/em>\u00a0are\u00a0antiquated terms that you're unlikely to run into in your life; however, since these are the only four words in English that use this plural, all four have been included above.<\/div>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Practice<\/h3>\r\nLook at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:\r\n<ul>\r\n \t<li><em>oxen<\/em>\u00a0is the plural of <i>ox<\/i>. This is an -<em>en<\/em> noun. To form the plural,\u00a0an\u00a0<em>-en<\/em> was added.<\/li>\r\n<\/ul>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">children<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">moose<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">teeth<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>squid<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>men<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>lice<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[reveal-answer q=\"245006\"]Show Answer[\/reveal-answer]\r\n[hidden-answer a=\"245006\"]\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">children<\/td>\r\n<td width=\"30%\"><em>children<\/em>\u00a0is the plural of <em>child<\/em>. This is an -<em>en<\/em> noun. To form the plural, an -<em>ren<\/em> was added.<\/td>\r\n<td width=\"3%\">moose<\/td>\r\n<td width=\"30%\"><em>moose\u00a0<\/em>is the plural of\u00a0<em>moose<\/em>. This is a no-change plural. The singular and plural have the same form.<\/td>\r\n<td width=\"3%\">teeth<\/td>\r\n<td width=\"30%\"><em>teeth<\/em>\u00a0is the plural of\u00a0<em>tooth<\/em>. This is a mid-word vowel change plural. The\u00a0<em>oo<\/em>\u00a0in <em>tooth\u00a0<\/em>was changed to an\u00a0<em>ee.<\/em><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>squid<\/td>\r\n<td><em>squid\u00a0<\/em>is the plural of\u00a0<em>squid<\/em>. This is a no-change plural. The singular and plural have the same form.<\/td>\r\n<td>men<\/td>\r\n<td><em>men<\/em> is the plural of\u00a0<em>man<\/em>. This is a mid-word vowel change plural. The\u00a0<em>a<\/em>\u00a0in <em>man\u00a0<\/em>was changed to an\u00a0<em>e.<\/em><\/td>\r\n<td>lice<\/td>\r\n<td><em>lice<\/em>\u00a0is the plural of\u00a0<em>louse<\/em>. This is a mid-word vowel change plural. The\u00a0<em>ouse<\/em>\u00a0in <em>louse\u00a0<\/em>was changed to an\u00a0<em>ice. <\/em><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\nThe last category of irregular plurals is borrowed words. These words are native to other languages (e.g., Latin, Greek) and have retained the pluralization rules from their original tongue.\r\n<h4>Singular -<em>us<\/em>; Plural -<em>i<\/em><\/h4>\r\n<ul>\r\n \t<li>cactus\u00a0\u2192 cacti<\/li>\r\n \t<li>fungus\u00a0\u2192 fungi<\/li>\r\n \t<li>syllabus\u00a0\u2192 syllabi<\/li>\r\n<\/ul>\r\nIn informal speech, <em>cactuses<\/em>\u00a0and <em>funguses<\/em>\u00a0are acceptable.\u00a0<em>Octopuses<\/em> is preferred to\u00a0<em>octopi<\/em>, but\u00a0<em>octopi<\/em> is an accepted word.\r\n<h4>Singular\u00a0<em>-a<\/em>; Plural -<em>ae<\/em><\/h4>\r\n<ul>\r\n \t<li>formula\u00a0\u2192 formulae (sometimes\u00a0<em>formulas<\/em>)<\/li>\r\n \t<li>vertebra\u00a0\u2192 vertebrae<\/li>\r\n \t<li>larva\u00a0\u2192 larvae<\/li>\r\n<\/ul>\r\n<h4>Singular -<em>ix<\/em>, -<em>ex<\/em>; Plural -<em>ices<\/em>, -<em>es<\/em><\/h4>\r\n<ul>\r\n \t<li>appendix\u00a0\u2192 appendices (sometimes <em>appendixes<\/em>)<\/li>\r\n \t<li>index\u00a0\u2192 indices<\/li>\r\n<\/ul>\r\n<h4>Singular -<em>on<\/em>,\u00a0-<em>um<\/em>;\u00a0Plural -<em>a<\/em><\/h4>\r\n<ul>\r\n \t<li>criterion \u2192 criteria<\/li>\r\n \t<li>bacterium \u2192 bacteria<\/li>\r\n \t<li>medium\u00a0\u2192 media<\/li>\r\n<\/ul>\r\n<h4>Singular -<em>is<\/em>; Plural -<em>es<\/em><\/h4>\r\n<ul>\r\n \t<li>analysis\u00a0\u2192 analyses<\/li>\r\n \t<li>crisis\u00a0\u2192 crises<\/li>\r\n \t<li>thesis\u00a0\u2192 theses<\/li>\r\n<\/ul>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Practice<\/h3>\r\nLook at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:\r\n<ul>\r\n \t<li><em>stimuli<\/em>\u00a0is the plural of\u00a0<i>stimulus<\/i>.\u00a0The singular ends with a\u00a0<em>-us<\/em>, so the plural ends with an\u00a0<em>-i<\/em>.<\/li>\r\n<\/ul>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">memoranda<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">hypotheses<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td width=\"3%\">phenomena<\/td>\r\n<td width=\"30%\">[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>parentheses<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>emphases<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>nuclei<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>foci<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>\u00a0vertebrae<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<td>\u00a0appendices<\/td>\r\n<td>[practice-area rows=\"1\"][\/practice-area]<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[reveal-answer q=\"245005\"]Show Answer[\/reveal-answer]\r\n[hidden-answer a=\"245005\"]\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"3%\">memoranda<\/td>\r\n<td width=\"30%\"><em>memoranda<\/em> is the plural of <em>memorandum<\/em>. The singular ends with -<em>um<\/em>, so the plural ends with -<em>a<\/em>.<\/td>\r\n<td width=\"3%\">hypotheses<\/td>\r\n<td width=\"30%\"><em>hypotheses<\/em> is the plural of <em>hypothesis<\/em>. The singular ends with -<em>is<\/em>, so the plural ends with -<em>es<\/em>.<\/td>\r\n<td width=\"3%\">phenomena<\/td>\r\n<td width=\"30%\"><em>phenomena<\/em> is the plural of <em>phenomenon<\/em>. The singular ends with -<em>on<\/em>, so the plural ends with -<em>a<\/em>.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>parentheses<\/td>\r\n<td><em>parentheses<\/em> is the plural of <em>parenthesis<\/em>. The singular ends with -<em>is<\/em>, so the plural ends with -<em>es<\/em>.<\/td>\r\n<td>emphases<\/td>\r\n<td><em>emphases<\/em> is the plural of <em>emphasis<\/em>. The singular ends with -<em>is<\/em>, so the plural ends with -<em>es<\/em>.<\/td>\r\n<td>nuclei<\/td>\r\n<td><em>nuclei<\/em> is the plural of <em>nucleus<\/em>. The singular ends with -<em>us<\/em>, so the plural ends with -<em>i<\/em>.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>foci<\/td>\r\n<td><em>foci<\/em>\u00a0is the plural of <em>focus<\/em>. The singular ends with -<em>us<\/em>, so the plural ends with -<em>i<\/em>.\u00a0<em>focuses<\/em> is also an acceptable plural<\/td>\r\n<td>\u00a0vertebrae<\/td>\r\n<td><em>vertebrae<\/em> is the plural of <em>vertebra<\/em>. The singular ends with -<em>a<\/em>, so the plural ends with -<em>ae<\/em>.<\/td>\r\n<td>appendices<\/td>\r\n<td><em>appendices<\/em> is the plural of <em>appendix<\/em>. The singular ends with -<em>ix<\/em>, so the plural ends with -<em>ices<\/em>.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n[\/hidden-answer]\r\n\r\n<\/div>","rendered":"<p>Nouns are a\u00a0diverse group of words, and they are very common in English. Nouns are a category of words defining <strong>things<\/strong>\u2014the name of people\u00a0(Dr. Sanders, lawyers), places (Kansas, factory, home), things (scissors, sheet music, book), or ideas (love, truth, beauty, intelligence).<\/p>\n<div class=\"textbox exercises\">\n<h3>Identifying Nouns<\/h3>\n<p>Let&#8217;s look at the following examples to get a better idea of how nouns work in sentences. All of the nouns have been bolded in blue:<\/p>\n<ul>\n<li>The one <span style=\"color: #0000ff;\"><strong>experiment<\/strong><\/span> that has been given the most <span style=\"color: #0000ff;\"><strong>attention<\/strong><\/span> in the <span style=\"color: #0000ff;\"><strong>debate<\/strong><\/span> on <span style=\"color: #0000ff;\"><strong>saccharin<\/strong><\/span> is the 1977 Canadian <span style=\"color: #0000ff;\"><strong>study<\/strong><\/span> done on <span style=\"color: #0000ff;\"><strong>rats<\/strong><\/span>.<\/li>\n<li>The multi-fuel <span style=\"color: #0000ff;\"><strong>capacity<\/strong><\/span> of the Stirling <span style=\"color: #0000ff;\"><strong>engine<\/strong><\/span> gives it a versatility not possible in the internal combustion <span style=\"color: #0000ff;\"><strong>engine<\/strong><\/span>.<\/li>\n<li>The regenerative cooling <span style=\"color: #0000ff;\"><strong>cycle<\/strong><\/span> in the <span style=\"color: #0000ff;\"><strong>engines<\/strong><\/span> of the Space <span style=\"color: #0000ff;\"><strong>Shuttle<\/strong><\/span> is made up of high pressure <span style=\"color: #0000ff;\"><strong>hydrogen<\/strong><\/span> that flows in <span style=\"color: #0000ff;\"><strong>tubes<\/strong><\/span> connecting the <span style=\"color: #0000ff;\"><strong>nozzle<\/strong><\/span> and the combustion <span style=\"color: #0000ff;\"><strong>chamber<\/strong><\/span>.<\/li>\n<\/ul>\n<\/div>\n<p>There are a lot of different categories of nouns, but before we get in too deep, let&#8217;s talk about pluralization.<\/p>\n<h2>Pluralization<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-2289\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-300x238.png\" sizes=\"auto, (max-width: 126px) 100vw, 126px\" srcset=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-300x238.png 300w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-65x52.png 65w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-225x178.png 225w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM-350x277.png 350w, https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/85\/2016\/06\/21144847\/Screen-Shot-2016-06-21-at-10.48.18-AM.png 357w\" alt=\"Icon of two men wearing suits\" width=\"126\" height=\"100\" \/>A plural noun\u00a0indicates that there is more than one of that noun (while a singular noun indicates that there is just one of the noun). Most plural forms are created by simply adding an\u00a0<em>-s<\/em> or &#8211;<em>es<\/em> to the end of the singular word.\u00a0For example, there&#8217;s one <strong>dog<\/strong> (singular), but three <strong>dogs<\/strong> (plural). However,\u00a0English has both regular and irregular plural nouns. Regular plurals follow this rule (and other similar rules), but\u00a0irregular plurals are, well, not regular and don&#8217;t follow a &#8220;standard&#8221; rule.<\/p>\n<h3>Regular\u00a0Plurals<\/h3>\n<p>Let&#8217;s start with regular plurals: <strong>regular plural nouns<\/strong> use established\u00a0patterns to\u00a0indicate there is more than one of a thing. As was\u00a0mentioned earlier, we add the plural suffix &#8211;<em>s<\/em> to most words (<em>cats<\/em>,\u00a0<em>bears<\/em>,\u00a0<em>zebras<\/em>).\u00a0However, after sounds <em>s<\/em>, <em>z<\/em>, <em>sh<\/em>, <em>ch<\/em>, and <em>j<\/em>, we add the plural suffix &#8211;<em>es <\/em>(<em>classes<\/em>,\u00a0<em>sashes<\/em>,\u00a0<em>foxes<\/em>). Some words that end in\u00a0<em>z<\/em> also double their ending\u00a0consonant, like\u00a0<em>quizzes<\/em>.<\/p>\n<p>We also add the plural suffix &#8211;<em>es<\/em> to most words that end in <em>o<\/em>\u00a0(<em>potatoes<\/em>, <em>heroes<\/em>, <em>mosquitoes<\/em>). However, when the words have a foreign origin (e.g.,Latin, Greek, Spanish), we \u00a0just add the plural suffix &#8211;<em>s<\/em>\u00a0(<em>tacos<\/em>, <em>avocados<\/em>, <em>maestros<\/em>).<\/p>\n<div class=\"textbox key-takeaways\">\n<h3>Practice<\/h3>\n<p>Look at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:<\/p>\n<ul>\n<li><em>vultures<\/em> is the plural of\u00a0<em>vulture<\/em>.\u00a0Despite\u00a0<em>vultures<\/em> ending in &#8211;<em>es,\u00a0<\/em>you simply add an &#8211;<em>s<\/em> to form the plural, as the\u00a0<em>e<\/em> is a part of the singular word.<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">trees<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">sopranos<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">watches<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<tr>\n<td>tomatoes<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>waltzes<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>wrists<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q633086\">Show Answer<\/span><\/p>\n<div id=\"q633086\" class=\"hidden-answer\" style=\"display: none\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">trees<\/td>\n<td style=\"width: 30%;\"><em>trees<\/em> is the plural of\u00a0<em>tree<\/em><em>s<\/em>. &#8211;<em>s<\/em>\u00a0is added<\/td>\n<td style=\"width: 3%;\">sopranos<\/td>\n<td style=\"width: 30%;\"><em>sopranos<\/em> is the plural of\u00a0<em>soprano<\/em>. &#8211;<em>s<\/em>\u00a0is added despite the word ending in an\u00a0<em>o<\/em>, because the word is borrowed from Italian<\/td>\n<td style=\"width: 3%;\">watches<\/td>\n<td style=\"width: 30%;\"><em>watches<\/em> is the plural of\u00a0<em>watch<\/em>. &#8211;<em>es<\/em> is added because the word ends in\u00a0<em>ch<\/em><\/td>\n<\/tr>\n<tr>\n<td>tomatoes<\/td>\n<td><em>tomatoes<\/em> is the plural of\u00a0<em>tomato<\/em>. &#8211;<em>es<\/em> is added because it&#8217;s a native English word<\/td>\n<td>waltzes<\/td>\n<td><em>waltzes<\/em> is the plural of\u00a0<em>waltz<\/em>. &#8211;<em>es<\/em> is added because the word ends in\u00a0<em>z<\/em><\/td>\n<td>wrists<\/td>\n<td><em>wrists<\/em>\u00a0is the plural of\u00a0<i>wrist<\/i>. &#8211;<em>s<\/em> is added<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<p>When a word ends in <em>y<\/em>\u00a0and there is a consonant before <em>y<\/em>, we change the <em>y<\/em>\u00a0to <em>i<\/em>\u00a0and add &#8211;<em>es<\/em>. Thus\u00a0<em>sky<\/em> becomes\u00a0<em>skies<\/em>.\u00a0When a word ends in &#8211;<em>f<\/em> or &#8211;<em>fe<\/em>, we change the <em>f<\/em> to <em>v<\/em>\u00a0and add &#8211;<em>es<\/em>. Thus\u00a0<em>calf<\/em>\u00a0becomes\u00a0<em>calves<\/em>.<\/p>\n<p>However, there are some exceptions to these rules:<\/p>\n<ul>\n<li><em>donkeys<\/em> not\u00a0<em>donkeies<\/em>;\u00a0<em>alloys<\/em> not\u00a0<em>alloies<\/em>.\n<ul>\n<li>If the\u00a0<em>y<\/em> follows another vowel, you simply add an &#8211;<em>s<\/em>.<\/li>\n<\/ul>\n<\/li>\n<li><em>cliffs<\/em> not\u00a0<em>clivves<\/em>; <em>chiefs<\/em> not\u00a0<em>chieves<\/em>\n<ul>\n<li>If there are two terminal\u00a0<em>f<\/em>s<em>, <\/em>you simply add an &#8211;<em>s<\/em>.<\/li>\n<li>If you still pronounce the\u00a0<em>f<\/em> in the plural, then the spelling should retain the\u00a0<em>f<\/em> as well.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"textbox key-takeaways\">\n<h3>Practice<\/h3>\n<p>Look at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:<\/p>\n<ul>\n<li><em>fries<\/em> is the plural of\u00a0<em>fry<\/em>. To form the plural, the\u00a0<em>y<\/em> was changed to an\u00a0<em>i<\/em>, and we added\u00a0&#8211;<em>es<\/em>.<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">reefs<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">leaves<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">flies<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<tr>\n<td>cafes<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>caves<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>boys<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q633087\">Show Answer<\/span><\/p>\n<div id=\"q633087\" class=\"hidden-answer\" style=\"display: none\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">reefs<\/td>\n<td style=\"width: 30%;\"><em>reefs<\/em> is the plural of\u00a0<em>reef<\/em>. &#8211;<em>s<\/em> is added. It is an exception to the rule.<\/td>\n<td style=\"width: 3%;\">leaves<\/td>\n<td style=\"width: 30%;\"><em>leaves<\/em> is the plural of\u00a0<em>leaf<\/em>. the\u00a0<em>f<\/em>\u00a0is changed to a\u00a0<em>v<\/em>, and\u00a0<em>-es<\/em>\u00a0is added<\/td>\n<td style=\"width: 3%;\">flies<\/td>\n<td style=\"width: 30%;\"><em>flies\u00a0<\/em>is the plural of\u00a0<em>fly<\/em>.\u00a0the\u00a0<em>y\u00a0<\/em> is changed to an\u00a0<em>i<\/em>, and &#8211;<em>es<\/em> is added<\/td>\n<\/tr>\n<tr>\n<td>cafes<\/td>\n<td><em>cafes<\/em> is the plural of <em>cafe<\/em>. the &#8211;<em>s<\/em> is added (note that\u00a0<em>cafe<\/em> is sometimes spelled with an accent mark:\u00a0<em>caf\u00e9<\/em>)<\/td>\n<td>caves<\/td>\n<td><em>caves<\/em> is the plural of\u00a0<em>cave<\/em>. the &#8211;<em>s<\/em> is added<\/td>\n<td>boys<\/td>\n<td><em>boys<\/em> is the plural of\u00a0<em>boy<\/em>. &#8211;<em>s<\/em> is added because the\u00a0<em>y<\/em> follows a vowel<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<h3>Irregular Plurals<\/h3>\n<p><strong>Irregular plurals<\/strong>, unlike regular plurals,\u00a0don&#8217;t necessarily follow any particular pattern\u2014instead, they follow a lot of\u00a0<em>different<\/em> patterns. Because of this, irregular plurals require a lot of memorization; you need to remember which nouns belong to which type of pluralization.\u00a0Mastering irregulars\u00a0uses a different region\u00a0of your\u00a0brain than regular pluralization:\u00a0it&#8217;s an entirely different skill set than regular pluralization. So don&#8217;t get too frustrated if you can&#8217;t remember the correct plural. If you&#8217;re ever in doubt, the dictionary is there for you.<\/p>\n<p>The first kind of irregular plural we&#8217;ll talk about is the <strong>no-change<\/strong> or <strong>base plural<\/strong>. In these words, the\u00a0singular noun has the exact same form as the plural (<em>sheep<\/em>,\u00a0<em>fish<\/em>,\u00a0<em>deer<\/em>, <em>moose<\/em>). Most no-change plurals are types of animals. The next type of irregular is the <strong>mid-word vowel change<\/strong>:<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-1\" title=\"Irregular plural nouns | the MUTANT PLURALS | Grammar | Khan Academy\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/VdLOP9teko4?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div class=\"textbox shaded\"><strong>Note:<\/strong> The plural for a computer mouse (as opposed to the fuzzy animal) can either be <em>mice<\/em> or <em>mouses<\/em>. Some people prefer\u00a0<em>mouses<\/em> as it creates some differentiation between the two words.<\/div>\n<p>And last we have\u00a0<strong>plural &#8211;<em>en<\/em>.<\/strong> In these words &#8211;<em>en<\/em> is used as the plural ending instead of &#8211;<em>s<\/em> or\u00a0<em>-es<\/em>.<\/p>\n<ul>\n<li>child\u00a0\u2192 children<\/li>\n<li>ox\u00a0\u2192 oxen<\/li>\n<li>brother\u00a0\u2192 brethren<\/li>\n<li>sister\u00a0\u2192 sistren<\/li>\n<\/ul>\n<div class=\"textbox shaded\"><strong>Note:<\/strong>\u00a0<em>Brethren<\/em>\u00a0and <em>sistren<\/em>\u00a0are\u00a0antiquated terms that you&#8217;re unlikely to run into in your life; however, since these are the only four words in English that use this plural, all four have been included above.<\/div>\n<div class=\"textbox key-takeaways\">\n<h3>Practice<\/h3>\n<p>Look at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:<\/p>\n<ul>\n<li><em>oxen<\/em>\u00a0is the plural of <i>ox<\/i>. This is an &#8211;<em>en<\/em> noun. To form the plural,\u00a0an\u00a0<em>-en<\/em> was added.<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">children<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">moose<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">teeth<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<tr>\n<td>squid<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>men<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>lice<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q245006\">Show Answer<\/span><\/p>\n<div id=\"q245006\" class=\"hidden-answer\" style=\"display: none\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">children<\/td>\n<td style=\"width: 30%;\"><em>children<\/em>\u00a0is the plural of <em>child<\/em>. This is an &#8211;<em>en<\/em> noun. To form the plural, an &#8211;<em>ren<\/em> was added.<\/td>\n<td style=\"width: 3%;\">moose<\/td>\n<td style=\"width: 30%;\"><em>moose\u00a0<\/em>is the plural of\u00a0<em>moose<\/em>. This is a no-change plural. The singular and plural have the same form.<\/td>\n<td style=\"width: 3%;\">teeth<\/td>\n<td style=\"width: 30%;\"><em>teeth<\/em>\u00a0is the plural of\u00a0<em>tooth<\/em>. This is a mid-word vowel change plural. The\u00a0<em>oo<\/em>\u00a0in <em>tooth\u00a0<\/em>was changed to an\u00a0<em>ee.<\/em><\/td>\n<\/tr>\n<tr>\n<td>squid<\/td>\n<td><em>squid\u00a0<\/em>is the plural of\u00a0<em>squid<\/em>. This is a no-change plural. The singular and plural have the same form.<\/td>\n<td>men<\/td>\n<td><em>men<\/em> is the plural of\u00a0<em>man<\/em>. This is a mid-word vowel change plural. The\u00a0<em>a<\/em>\u00a0in <em>man\u00a0<\/em>was changed to an\u00a0<em>e.<\/em><\/td>\n<td>lice<\/td>\n<td><em>lice<\/em>\u00a0is the plural of\u00a0<em>louse<\/em>. This is a mid-word vowel change plural. The\u00a0<em>ouse<\/em>\u00a0in <em>louse\u00a0<\/em>was changed to an\u00a0<em>ice. <\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<p>The last category of irregular plurals is borrowed words. These words are native to other languages (e.g., Latin, Greek) and have retained the pluralization rules from their original tongue.<\/p>\n<h4>Singular &#8211;<em>us<\/em>; Plural &#8211;<em>i<\/em><\/h4>\n<ul>\n<li>cactus\u00a0\u2192 cacti<\/li>\n<li>fungus\u00a0\u2192 fungi<\/li>\n<li>syllabus\u00a0\u2192 syllabi<\/li>\n<\/ul>\n<p>In informal speech, <em>cactuses<\/em>\u00a0and <em>funguses<\/em>\u00a0are acceptable.\u00a0<em>Octopuses<\/em> is preferred to\u00a0<em>octopi<\/em>, but\u00a0<em>octopi<\/em> is an accepted word.<\/p>\n<h4>Singular\u00a0<em>-a<\/em>; Plural &#8211;<em>ae<\/em><\/h4>\n<ul>\n<li>formula\u00a0\u2192 formulae (sometimes\u00a0<em>formulas<\/em>)<\/li>\n<li>vertebra\u00a0\u2192 vertebrae<\/li>\n<li>larva\u00a0\u2192 larvae<\/li>\n<\/ul>\n<h4>Singular &#8211;<em>ix<\/em>, &#8211;<em>ex<\/em>; Plural &#8211;<em>ices<\/em>, &#8211;<em>es<\/em><\/h4>\n<ul>\n<li>appendix\u00a0\u2192 appendices (sometimes <em>appendixes<\/em>)<\/li>\n<li>index\u00a0\u2192 indices<\/li>\n<\/ul>\n<h4>Singular &#8211;<em>on<\/em>,\u00a0&#8211;<em>um<\/em>;\u00a0Plural &#8211;<em>a<\/em><\/h4>\n<ul>\n<li>criterion \u2192 criteria<\/li>\n<li>bacterium \u2192 bacteria<\/li>\n<li>medium\u00a0\u2192 media<\/li>\n<\/ul>\n<h4>Singular &#8211;<em>is<\/em>; Plural &#8211;<em>es<\/em><\/h4>\n<ul>\n<li>analysis\u00a0\u2192 analyses<\/li>\n<li>crisis\u00a0\u2192 crises<\/li>\n<li>thesis\u00a0\u2192 theses<\/li>\n<\/ul>\n<div class=\"textbox key-takeaways\">\n<h3>Practice<\/h3>\n<p>Look at each plural word in the table below. Write the singular version of the word and explain which\u00a0rule the\u00a0plural has used in its formation. For example:<\/p>\n<ul>\n<li><em>stimuli<\/em>\u00a0is the plural of\u00a0<i>stimulus<\/i>.\u00a0The singular ends with a\u00a0<em>-us<\/em>, so the plural ends with an\u00a0<em>-i<\/em>.<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">memoranda<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">hypotheses<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td style=\"width: 3%;\">phenomena<\/td>\n<td style=\"width: 30%;\"><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<tr>\n<td>parentheses<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>emphases<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>nuclei<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<tr>\n<td>foci<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>\u00a0vertebrae<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<td>\u00a0appendices<\/td>\n<td><textarea aria-label=\"Your Answer\" rows=\"1\"><\/textarea><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q245005\">Show Answer<\/span><\/p>\n<div id=\"q245005\" class=\"hidden-answer\" style=\"display: none\">\n<table>\n<tbody>\n<tr>\n<td style=\"width: 3%;\">memoranda<\/td>\n<td style=\"width: 30%;\"><em>memoranda<\/em> is the plural of <em>memorandum<\/em>. The singular ends with &#8211;<em>um<\/em>, so the plural ends with &#8211;<em>a<\/em>.<\/td>\n<td style=\"width: 3%;\">hypotheses<\/td>\n<td style=\"width: 30%;\"><em>hypotheses<\/em> is the plural of <em>hypothesis<\/em>. The singular ends with &#8211;<em>is<\/em>, so the plural ends with &#8211;<em>es<\/em>.<\/td>\n<td style=\"width: 3%;\">phenomena<\/td>\n<td style=\"width: 30%;\"><em>phenomena<\/em> is the plural of <em>phenomenon<\/em>. The singular ends with &#8211;<em>on<\/em>, so the plural ends with &#8211;<em>a<\/em>.<\/td>\n<\/tr>\n<tr>\n<td>parentheses<\/td>\n<td><em>parentheses<\/em> is the plural of <em>parenthesis<\/em>. The singular ends with &#8211;<em>is<\/em>, so the plural ends with &#8211;<em>es<\/em>.<\/td>\n<td>emphases<\/td>\n<td><em>emphases<\/em> is the plural of <em>emphasis<\/em>. The singular ends with &#8211;<em>is<\/em>, so the plural ends with &#8211;<em>es<\/em>.<\/td>\n<td>nuclei<\/td>\n<td><em>nuclei<\/em> is the plural of <em>nucleus<\/em>. The singular ends with &#8211;<em>us<\/em>, so the plural ends with &#8211;<em>i<\/em>.<\/td>\n<\/tr>\n<tr>\n<td>foci<\/td>\n<td><em>foci<\/em>\u00a0is the plural of <em>focus<\/em>. The singular ends with &#8211;<em>us<\/em>, so the plural ends with &#8211;<em>i<\/em>.\u00a0<em>focuses<\/em> is also an acceptable plural<\/td>\n<td>\u00a0vertebrae<\/td>\n<td><em>vertebrae<\/em> is the plural of <em>vertebra<\/em>. The singular ends with &#8211;<em>a<\/em>, so the plural ends with &#8211;<em>ae<\/em>.<\/td>\n<td>appendices<\/td>\n<td><em>appendices<\/em> is the plural of <em>appendix<\/em>. The singular ends with &#8211;<em>ix<\/em>, so the plural ends with &#8211;<em>ices<\/em>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-261\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Original<\/div><ul class=\"citation-list\"><li>Text: Pluralization. <strong>Provided by<\/strong>: Lumen Learning. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Nouns, Parts of speech and other sentence elements. <strong>Authored by<\/strong>: David McMurrey. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.prismnet.com\/~hcexres\/textbook\/twsent.html#noun\">https:\/\/www.prismnet.com\/~hcexres\/textbook\/twsent.html#noun<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Irregular plural nouns - the MUTANT PLURALS. <strong>Authored by<\/strong>: David Rheinstrom. <strong>Provided by<\/strong>: Khan Academy. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.khanacademy.org\/humanities\/grammar\/partsofspeech\/grammar-nouns\/v\/irregular-plural-nouns-part-iv-the-parts-of-speech-grammar\">https:\/\/www.khanacademy.org\/humanities\/grammar\/partsofspeech\/grammar-nouns\/v\/irregular-plural-nouns-part-iv-the-parts-of-speech-grammar<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/\">CC BY-NC-SA: Attribution-NonCommercial-ShareAlike<\/a><\/em><\/li><li>Image of two men. <strong>Authored by<\/strong>: Gregor Cresnar. <strong>Provided by<\/strong>: The Noun Project. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/thenounproject.com\/search\/?q=people&#038;i=176708\">https:\/\/thenounproject.com\/search\/?q=people&#038;i=176708<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":17,"menu_order":3,"template":"","meta":{"_candela_citation":"[{\"type\":\"original\",\"description\":\"Text: Pluralization\",\"author\":\"\",\"organization\":\"Lumen Learning\",\"url\":\"\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"Nouns, Parts of speech and other sentence elements\",\"author\":\"David McMurrey\",\"organization\":\"\",\"url\":\"https:\/\/www.prismnet.com\/~hcexres\/textbook\/twsent.html#noun\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"Irregular plural nouns - the MUTANT PLURALS\",\"author\":\"David Rheinstrom\",\"organization\":\"Khan Academy\",\"url\":\"https:\/\/www.khanacademy.org\/humanities\/grammar\/partsofspeech\/grammar-nouns\/v\/irregular-plural-nouns-part-iv-the-parts-of-speech-grammar\",\"project\":\"\",\"license\":\"cc-by-nc-sa\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"Image of two men\",\"author\":\"Gregor Cresnar\",\"organization\":\"The Noun Project\",\"url\":\"https:\/\/thenounproject.com\/search\/?q=people&i=176708\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-261","chapter","type-chapter","status-publish","hentry"],"part":2016,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapters\/261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/wp\/v2\/users\/17"}],"version-history":[{"count":14,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapters\/261\/revisions"}],"predecessor-version":[{"id":2105,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapters\/261\/revisions\/2105"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/parts\/2016"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapters\/261\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/wp\/v2\/media?parent=261"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/pressbooks\/v2\/chapter-type?post=261"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/wp\/v2\/contributor?post=261"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/suny-introtocollegecomp\/wp-json\/wp\/v2\/license?post=261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}