1．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds
2．以s. x. sh. ch结尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches
3．以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries
4．以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives
5．不规则名词复数：man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice, child-children,foot-feet,
tooth-teeth,fish-fish, people-people, Chinese-Chinese, Japanese-Japanese
6.情况构成方法例词
（1）一般情况在词尾+s desk-desks, apple-apples
（2）以-s.x.ch.sh结尾的词在词尾+es class-classes, box-boxes
peach-peaches, dish-dishes
（3）以辅音字母加y结尾的词变y为i再+es factory-factories, family-families
（4）以元音字母加y结尾的词在词尾+s day-days, boy-boys, key-key
（5）以f或fe结尾的词变f或fe为v再+e sknife-knives, wife-wives
leaf-leaves, life-lives
（6）以辅音字母o结尾的词有生命的+es
（7）无生命的+s