英语单词单数变复数总结英语单词单数变复数的规律
名词的复数形式,一般在单数形式后面加-s或-es.现将构成方法与读音规则列表如下:
1.一般情况在词尾加-s
map-maps, sea-seas, girl-girls, day-days
2.以s, x, ch, sh结尾的名词后加-es :
class-classes, box-boxes, watch-watches, dish-dishes 3.以-f或-fe结尾的词变-f和-fe为v再加-es:
radio的复数形式leaf-leaves,thief-thieves, knife-knives ,loaf-loaves ,wife-wives 4.直接加-s :
belief-beliefs, chief-chiefs, proof-proofs, roof-roofs, gulf-gulfs 5.以辅音字母加y结尾的名词,变y为i加-es:
party-parties, family-families, story-stories, city-cities 6.以元音字母加y结尾的名词,或专有名词以y结尾的,加-s:
toy-toys, boy-boys, day-days, ray-rays, Henry-Henrys 7.以辅音字母加-o结尾的名词,一般加-es:
hero-heroes, Negro-Negroes, potato-potatoes, tomato-tomatoes 8.不少外来词加-s:
piano-pianos, photo-photos, auto-autos, kilo-kilos, solo-solos 9.两者皆可:
zero-zeros/zeroes, volcano-volcanoes volcanos
10.以元音字母加-o结尾的名词加-s:
radio-radios, bamboo-bamboos, zoo-zoos
11.以-th结尾的名词加-s:
truth-truths, mouth-mouths, month-months, path-paths,
2.不规则名词复数:
英语里有些名词的复数形式是不规则的,现归纳如下:
1.改变名词中的元音字母或其他形式:
man-men, woman-women, foot-feet, goose-geese, mouse-mice 
2.单复数相同:
sheep, deer, series, means, works, fish, species li, yuan, jin,  3.只有复数形式:
ashes, trousers, clothes, thanks, goods, glasses, passes, contents 4.一些集体名词总是用作复数:
people, police, cattle, staff 5.部分集体名词既可以作单数(整体)也可以作复数(成员):
audience, class, family, crowd, couple, group, mittee, government, population, crew, team, public, enemy, party 6.复数形式表示特别含义:
customs(海关), forces(军队), times(时代), spirits(情绪), drinks(饮料), sands(沙滩), papers(文报纸), manners(礼貌), looks(外表), brains(头脑智力), greens(青菜), ruins(废墟) 7表示“某国人”加-s:
Americans, Australians, Germans, Greeks, Swedes, Europeans 8.单复数同形:
Swiss, Portuguese, Chinese, Japanese 9.以-man或-woman结尾的改为-men,-women:
Englishmen, Frenchwomen
10.合成名词将主体名词变为复数:
sons-in-law, lookers-on, passers-by, story-tellers, boy friends
11.无主体名词时将最后一部分变为复数:
grown-ups, housewives, stopwatches
12.将两部分变为复数:
women singers ,    men servants 

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