名詞復(fù)數(shù)和動(dòng)詞三單
一、名詞復(fù)數(shù)規(guī)則
1．一般情況下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds
2．以s. x. sh. ch結(jié)尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches
3．以“輔音字母+y”結(jié)尾,變y為i, 再加-es，如：family-families, strawberry-strawberries
4．以“f或fe”結(jié)尾，變f或fe為v, 再加-es，如：knife-knives
5．不規(guī)則名詞復(fù)數(shù)： man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice, child-children ,foot-feet,tooth-teeth
fish-fish, sheep-sheep,deer-deer,people-people, Chinese-Chinese, Japanese-Japanese
練習(xí)：寫出下列各詞的復(fù)數(shù)。
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________
二．動(dòng)詞三單的變化規(guī)則
1．一般情況下，直接加-s，如：cook-cooks, milk-milks
2．以s. x. sh. ch. o結(jié)尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes
3．以“輔音字母+y”結(jié)尾，變y為i, 再加-es，如：study-studies
練習(xí): 寫出下列動(dòng)詞的第三人稱單數(shù)
drink ________ go _______ stay ________ make ________ look _________
have_______ pass_______ carry ____ come________ watch______
plant_______ fly ________ study_______ brush________ teach_______