英语名词单数变复数主要有以下规则：
一、绝大多数的可数名词的复数形式，是在该词末尾加上后辍-s。
读音变化：结尾是清辅音读[s]，结尾是浊辅音或元音读[z]。
例：friend→friends; cat→cats; style→styles; sport→sports; piece→pieces
二、凡是以s、z、x、ch、sh结尾的词，在该词末尾加上后辍-es构成复数。
读音变化：统一加读[iz]。
例：bus→bus; quiz→quizzes; fox→foxes; match→matches; flash→flashes box →boxes; watch →watches; actress →actress; class →class; coach（长途车） →coaches; dress →dress; sandwich →sandwiches; toothbrush →toothbrushes; waitress（女侍者） →waitress
经典欧美电影三、以辅音字母+y结尾的名词，将y改变为i，再加-es。
读音变化：加读[z]。
例：candy→candies; fairy→fairies; lady→ladies; story→stories
strawberry →strawberries; baby →babies; puppy →puppies; library →libraries; dictionary →dictionaries; cherry →cherries; activity →activities
四、以-o结尾的名词，如果不是外来词或缩写，就加-es，否则加-s构成复数。 （有生命的加es，无生命的加s）
读音变化：加读[z]。
例：tomato→tomatoes; potato→potatoes; bingo（彩票式游戏）→bingoes
反例： piano→pianos（外来词）; photo→photos;
五、以-f或-fe结尾的名词，多为将-f或-fe改变为-ves，但有例外。
读音变化：尾音[f]改读[vz]。
例：knife→knives; life→lives; leaf→leaves; staff(员工)→staves; scarf（围巾）→scarves
唇亡齿寒翻译
目前搜集的直接加s：roof-roofs, belief-beliefs, safe-safes,chief（负责人）-chiefs
这几个可变可不变： scarf-scarfs，
六、以-us结尾的名词（多为外来词），通常将-us改变为-i构成复数。
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读音变化：尾音[Es]改读[ai]，其中[kEs]要改读为[sai]，[gEs]要改读为[dVai]。
例： abacus（算盘）→abaci; focus（焦点）→foci; cactus（仙人掌）→cacti;
七、部分单词的复数形式不变。
读音变化：保持原音。
例：fish→fish; sheep→sheep; cattle→cattle; deer→deer;
八、极少数单词，其复数形式没有任何规律。 读音变化：没有规律。
例：man→men; woman→women; child→children; person→people; ox→oxen foot →feet; goo →gee; mou →mice; tooth →teeth;
九、若表达具体数目，要借助数量词
例：pair(对，双); suit(套); a pair of glass; two pairs of trours
十、另外还有一些名词，其复数形式有时可表示特别意思，
例：goods货物，waters水域，fishes（各种）鱼
十一、一些单数词得加en才能变成复数词：
例：ox→oxen; child→children; brother（用于教堂）→brethren
十二、一些单数词得改头换面一番,才能变成复数词
例：analysis→analys分析; basis→bas基础; datum→data数据; foot→feet; goo→gee; lou虱子→lice; man→men
mou→mice; medium→media/mediums媒介; tooth→teeth; woman→women
英语专项测试名词复数（总分100分）
一、请写出下列词的复数形式。(1’*50=50’)
city _____ _zoo ______country _____ tooth ____
mou __ boy美国建筑学排名____________ broom ___________car ____ 不定式作表语
tree ______horjohn cusack ______ bus______________ fox _____
branch ____ communicatedbaby _____ family _____ dish _____
radio _____ photo _____ piano _____ knife _____
leaf _____ life _____ thief _____ _man _____
woman _____ child ___ foot this _____________ watch___________ diary____________ day____________ book____________
dress____________ sheep___________ tea_____________ box___________
strawberry_________ peach__________ sandwich__________ paper_________
juice__________ water____________ milk___________ rice__________
people CD ox___________deer____________ fish___________
二、单项选择 (1’*10=10’)
( )1. The __ in our yard are very beautiful.
A. cloth B. water C. flowers
( )2. Tom is one of the Chine _____ in our school.
A. boy B. boys C. boies
( )3. A cat has four ____ , doesn't it?
A. foots B. feet C. feets
( )4. There are three ____ and five _____ in the room.
onholiday A. American, Japane B Americans, Japane C. American, Japane
( )5. Can you e nine ____ in the picture?
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A. fish B. book C. hor
( )6. The _____ has two______.
A. boy; watch B. boy; watches C. boys; watch
( )7. The _____ are flying back to their country.
A. Germany B. Germanys C. Germans
( )8. The girl brushes her _____ every day before she goes to bed.
A. tooths B. teeth C. teeths
( )9.I saw many _____ in the street.
A. peoples B.people C.people’s
( )10.The green sweater is his _________.
A.brother B.brothers C.brother’s
三、选择填空 (1’*10=10’)
( )1. They come from different ______
A. country B. countries C. a country D. countrys
( )2. How many ______ do you e in the picture?
A. tomatos B. tomatoes C. tomato D. the tomato
( )3. They are______.
A . woman teachers B. women teachers
C. women teacher D. woman teacher
( )4. Would you like _______ ,plea?bestiality
A. two glass of water B. two glass of water
C. two glass of waters D. two glass of waters
