单数名词变复数规律

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单数名词变复数的规律
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
二、以s,x,ch,sh结尾的词,末尾加es变成复数
例:bus→buses; fox→foxes; match→matches;
flash→flashes ;box →boxes; watch →watches; actress →actresses; class →classes; 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a,e,o,u,i】monkey---monkeys holiday---holidays boy---boys key---keys
四、以o结尾的名词,有生命的加es,无生命的加s构成复数。

口诀:黑人和英雄吃土豆、西红柿和芒果
negroes and heroes eat tomatoes and potatoes
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 口诀: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、还有部分单词单复数同行. 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、极少数单词,其复数形式没有任何规律。

口诀:男士女士a变e;鹅牙脚o都变e; 孩子们想去天安门,原形后面ren; 老鼠虱子本爱牛,mouse, louse,ox.
解释:goose-geese; mouse-mice; foot-feet. man-men; woman-women; tooth-teeth; foot-feet,child-children,louse-lice,ox-oxen。