单数变复数的规律有哪几个
单词变复数规律？
单词变复数的规律？
以s,x,sh,ch结尾的单词后加es,如:brush_brushes.以元音字母加y结尾的单词后加s,以辅音字母加y结尾的单词后面y为i再加es,如:boy_boys,baby_babies以o结尾的单词一般加s,photo_photos,但以下几种以外，要加es:potato_potatoes,tomato_tomatoes,hero_heroes,Negro_Negroes.
单词变复数规律？
1、名词由奇数变复数的最基本方式如下所示：
①在奇数名词词尾加s。如：map → maps,boy→ boys,horse→ horses, table→ tables.
②s,o,x ,sh,ch结尾的词加es.如：class→classes, box→boxes, hero→heroes, dish→dishes, bench→benches.
[注]：极少数以o结尾的词,变复数时只加s。如：photo→photos, piano→pianos.
③以辅音字母加y结尾的名词,变y为i,再加es。如：family→families, city→cities, party→parties.
④以f或fe结尾的名词,变f或fe为v,再加es。如：shelf→shelves, wolf→wolves, life→lives, knife→knives.
2、不规则变化：man→men, woman→women, sheep→sheep,tooth→teeth, fish→fish, child→children, ox→oxen, goose→geese
不可数名词一般没有复数方式,说明其总数时,得用相关计量检定名词。如：a bag of rice→two bags of rice, a piece of paper→three pieces of paper, a bottle of milk→five bottles of milk.