第1个回答 2009-04-02
只能先背了
可数名词变复数的九种方式
1> 1)单数名词加s: students, apples, bags, trees, books, brothers.?
2)以s、x、sh、ch结尾的名词加es: glasses, boxes, brushes, matches.?
3)以辅音字母加y结尾的名词,变y为i加es: cities, babies, enemies.?4)以f或fe结尾的名词,多数变f为v加es: wives, knives.但有些词只加s: roofs, proof s, chiefs.?
5)以o结尾的名词,有些加es: Negroes, heroes, tomatoes, potatoes.其它加s: radio s, zoos, pianos, photos.
6)不规则名词:foot→feet, goose→geese, tooth→teeth, child→children, man→me n, woman→women, sheep→sheep, deer→deer, mouse→mice.
7)某些外来词变复数:datum→data, medium→media, bacterium→bacteria, curriculum→curricula, criterion→criteria, phenomenon→phenomena. (?um/?on→a)?analysis→analyses, basis→bases, crisis→crises, diagnosis→diagnoses.(?is→es )?
8)复合名词变复数:以不可数名词结尾的复合名词无复数形式,如:homework.?
以man或woman为前缀的复合名词变复数,前后两个名词都变复数,如:manservant→menservants, woman student women students.?
其它复合名词变复数:grown?up→grown?ups, brother?in?law→brothers?in?law, stand?by→stands?by.?
9)复合形容词做定语时,其中的名词保持单数:a six?year?old boy,a two?hundred?page book
第2个回答 2009-03-27
一般情况下的名词复数是直接加s,例:pen-pens,shoe-shoes;以s,x,ch,sh,o结尾的加es,例:bus-buses,box-boxes,watch-watches,tomato-tomatoes;以辅音字母结尾的词,变y为i再加es,例city-cities,country-countries;以f或fe结尾的词,去f或fe,变v加es,例:life-lives,leaf-leaves。除此之外还有不规则的名词复数woman-women,man-men,foot-feet,tooth-teeth,mouse-mice,sheep-sheep,dear-dear,fish-fish,child-children,goose-geese,ox-owen