第1个回答 2010-08-26
1. 以 -ch,-sh,-s,-x,-z结尾的词加-es,如church-churches, dish-dishes, class-classes, box-boxes
2.以辅音字母+y结尾的词变-y为-i再加-es,如factory-factories, fly-flies, family-families, baby-babies
3.以-o结尾的词加-es,如tomato-tomatoes, hero-heroes
4.以-f或-fe结尾的词变-f或-fe为-v再加-es,如leaf-leaves, thief-thieves, shelf-shelves, knife-knives, life-lives, half-halves