名词变复数规则
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。 例：friend→friends; cat→cats; style→styles; sport→sports; piece→pieces 二、凡是以s、x、ch、sh结尾的词，在该词末尾加上后辍-es构成复数。
例：bus→buses; fox→foxes; match→matches; flash→flashes ；box →boxes; watch →watches; actress →actresses; class →classes; coach（长途车） →coaches; dress →dresses; sandwich →sandwiches; toothbrush →toothbrushes; waitress（女侍者） →waitresses
三、以辅音字母+y结尾的名词，将y改变为i，再加-es。
例：candy→candies; daisy（雏菊）→daisies; fairy→fairies; lady→ladies; story→stories strawberry →strawberries; baby →babies; puppy →puppies; library →libraries; dictionary →dictionaries; cherry →cherries; activity →activities ,country—countries,fly—flies.
区别: 元音字母+y 结尾的名词变复数时，直接加s变复数【元音字母有a,e,o,u,i】 monkey---monkeys holiday---holidays boy---boys key---keys
四、以-o结尾的名词，如果不是外来词或缩写词，就加-es，否则加-s构成复数。 （有生命的加es，无生命的加s）
口诀：黑人和英雄吃土豆和西红柿 negroes and heroes eat tomatoes and potatoes
反例：radio—radios， piano→pianos（外来词）; photo→photos; zoo- zoos，bamboo-bamboos，kimono--kimonos
五、以-f或-fe结尾的名词，多为将-f或-fe改变为-ves
例knife→knives; life→lives; leaf→leaves; scarf（围巾）→scarves 树叶半数自己黄，妻子拿刀去杀牛；架后窜出一只狼，就像小偷逃命忙。 解释：leaf（树叶）half（一半）self（自己）wife（妻子） knife（刀子）calf （小牛）shelf（架子）wolf（狼）thief（小偷）life（生命）
六、部分单词的单复数同形
口诀： 中日警察好友来聚会，鹿、羊、鱼、牛齐齐把家回。 解释：Chinese, Japanese ,police，people， deer, sheep, fish ，cattle 七、“中日瑞不变，英法都要变，其他国人加S。
在英语名词复数中，表示（某）国人的名词复数有些加S,有些又不加，学生常常会出错。这里有一条顺口溜就能帮助学生解决这一问题。它是：“中日瑞不变，英法都要变，其他国人加S。如
Chinese--Chinese, Japanese--Japanese, Swiss--Swiss Englishman--Englishmen, American--Americans German--Germans.
名词变复数专项练习（选择填空 ）
1、There_________on the wall. They are very beautiful. A、are photoes B、are photos C、is a photo D、is photos
2、This kind of car_________--made in Shanghai. A、 is B、are C、/ D、the 3、There are four _________-and two _________in the group.
A、Japanese,Germen B、Japaneses,Germen C、Japanese,German D、Japanese,Germans 4、That is _________-art book. A、an B、a C、the D、are 5、The boys have got _________already.
A、two bread B、two breads C、two pieces of bread D、two piece of bread 6、The old man wants _________
A、six boxes of apples B、six boxes of apple C、six box of apples D、six boxs of apples 7、There _________some -----in the river. A、is, fish B、are, fishs C、is, fishs D、are ,fish 8、There _________two _________in the box. A、is watch B、are watches C、are watch D、is watches 9、We should clean _________twice a day. A、our tooth B、our tooths C、teeth D、our teeth 10、The _________meeting room is near the reading room. A、teacher B、teacher＇s C、teachers＇ D 、teachers
11、In Britain _________are all painted red. A、letter boxes B、letters boxes C、letter box D、letters box
12、They come from different_________. A、country B、countries C、a country D、countrys 13、How many _________do you see in the picture? A、tomatos B、tomatoes C、tomato D、the tomato 14、They are_________. A、woman teachers B、women teachers C、women teacher D、woman teacher 15、Would you like _________,please?
A、two glass of water B、two glasses of water C、two glass of waters D、two glasses of waters 16、Most of _________live in _________.
A、Germans ,German B、German ,Germen C、Germen ,Germany D、Germans ,Germany 17、There are some _________in these _________.
A、knifes; pencil-boxes B、knives; pencils-box C、knives; pencil-box D、knives; pencil-boxes 19、I wonder why _________are interested in action films(武打片). A、the people B、people C、peoples D、the peoples
20、There is no _________in the plate. A、apples B、oranges C、rice D、eggs
