2．以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes

1．一般情况下，直接加-s，如：cook-cooks, milk-milks

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

练习：写出下列各词的复数。

I _________　 him _________　 this _______　 her ______ 　watch _______ book_______

child _______ photo ________ diary ______ 　day________ 　foot________ dress ________ tooth_______ sheep ______　 box_______ 　strawberry _____ thief _______yo-yo ______ peach______ sandwich ______ man______ 　woman_______ paper_______ people________

4．以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives

3．以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries

2．以s. x. sh. ch结尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches

1．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds

22.The girl behind _________ is our friend. (she )

语法及练习3 名词复数和动词三单

21. Look at that desk. Those book are on _________. ( it )

20. May I sit beside _________? ( you )