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;pen---pens 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→buses; fox→foxes; match→matches;
f lash→flashes但stomach的复数为stomachs。
三、以辅音字母+y结尾的名词，将y改变为i，再加-es。 a o e i u属元音
读音变化：加读[z]。
例：candy→candies; daisy→daisies; fairy→fairies; lady→ladies; story→stories
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。读音变化：加读[z]。
有生命的加es例：tomato→tomatoes; potato→potato es; Negro, hero 反例：silo→silos; piano→pianos（外来词）; photo→photos;kilo→kilos, zoo→zoos, radio→radios, piano→pianos, video→videos。
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]。thief, life, wife, shelf, self, knife, half, leaf, wolf
例：knife→knives; life→lives; leaf→leaves; staff→staves; scarf→scarves
反例：roof→roofs
2. 不规则变化
名词单数变复数的不规则变化要注意以下几点：
①含man的名词，一般变man为men。如woman→women, policeman→policemen, Englishman→Englishmen。但German→Germans。
②将oo改为ee的有foot→feet, tooth→teeth, goose→geese等。
③复数以en结尾的有child→children, ox→oxen等。
④将ouse改为ice的有mouse→mice, louse→lice(虱子)等。
⑤单复数同形的有sheep, deer, fish, means, works(工厂), Swiss, Japanese,
Chinese等。
除人民币元、角、分外，美元、英镑、法郎等都有复数形式。
例：a dollar, two dollars; a meter, two meters
以O结尾的词，许多加es构成复数，特别是一些常用词如：heroes,potatoes,tomatoes,echoes,tornadoes,torpedoes,dominoes,vetoes,mosquitoes,Ne groes,mangoes,buffaloes,volcanoes
但下面几类词只加s：1.以“元音+o”或“oo”结尾的词
如:videos,radios,studios,folios,oratorios,embryos,zoos,bamboos,kangaroos,taboos
2.一些外来词，特别是音乐方面的词，如：pianos,solos,concertos,tobaccos,mottos,cellos
3.一些缩写词和专有名词，如：kilos,photos,memos,micros,Eskimos,Filipnos
有个别词加两种词尾都可以，如：archipelago(e)s,halo(e)s,cargoes(英），cargos(美）
写出下列名词复数
leaf______ puppy小狗______ box_______ knife_______ fly______ fox______ bus______ bench_____ brush_____ kiss______ church______ dish_____ peach________ glass_____ pencil________ boy______ zoo______ man______ roof_______ sheep_______ knife______ lady______ key______ story______ watch______ bamboo______ city______ family______ day_____ apple_______ eraser______ speech______ thief______ mouse______ fish_____ goose____ people ______ ox_____ Chinese _______ deer _______ foot______ child_______ tooth_______ guy________ hero_______boss_____ monkey______ city ______ goat ______ radio ________ horse ______ dog ______
用所给的单词的复数的正确形式填空：
1>There are so many________(wolf)in the forest.
2>There are three ______(chair) in the classroom.
4>______(hero) are great.
5>My brother looks after two ______(baby)
6>There are some ______(deer) eating the grass.
8>Chinese ______(people)like to eat noodles.
9>I have a lot of ______(toy) in my bedroom.
10>I help my mother wash ______(dish) in the kitchen.
11>I have two ______(pencil-box).
16>Michael likes the ______(mouse).
17>There are some ______(goose)in the river.
选出正确形式
1．I can see three ________ in the zoo.
A monkeies
B monkeys
C monkey
3.My two brothers are both ______.
A. policeman
B. policemans
C. policemen
5.I can see ten _____ in the picture. A. sheep B. dog C. pig
6.The _____ has three______.
A. boys, watches
B. boy, watch
C. boy, watches
7.Can you see _______on the plate? A. bread B. breads C. breades
9.Mr Black often drink some _________.A. milk B. milks kes
10.There are some _____ on the floor. A. child B. water C. books
11. _______ will learn English. A. Woman B. Women C. Man
13. I drank two ______.
A. bottles of orange
B. bottle of orange
C. bottles of oranges
14.The cat eats two ______ last night. A. mouses B. mice C. mouse
15.I need a pen and some _____. A. books B. desk C. chair
16 Jim was late for two classes this morning. He said that he forgot both of the ____
A. rooms number
B. Room number
C. Room’s number
D. Room numbers
17. The newly-built library is a ______ building.
