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1、- 四大原则 一般现在时动词三单形式变化1.一般直接在动词后加s；play-plays2.以s/x/o/sh/ch结尾的动词，直接加es；watch-watches3.以辅音加y结尾的动词，变y 为i再加es；study-studies 4.特殊变化，have-has(注意：只有当主语是she/he/it/人名单数/名词单数时，动词才要变化为三单形式。“does” 一出现，动词就还原。） 练 习1.写出下列动词的三单形式jump _ throw _ kick _ catch _ wash _ go _ study _ busy _ hop _ run _ read _ have_ 2. 请在括
2、号内选择正确的词。 Tom (like/likes) roller skating,but I (like/likes)watching TV. My father (read/reads)books,and I (do/does)my homework. Jacks classmates(play/plays)basketball every afternoon. Lilys sister(draw/draws)picture every day. Father(buy/buys)me a gift for my birthday. Jack and I(bounce/bounces)bal
3、l every Sunday morning.3.请用括号内动词的正确形式填空She_(cook)everyday，but doesnt_(wash) everyday.He_(do) his homework at 5 ,but I _(do) my homework at 6:30.Bob _(have) lunch at 12:00,but we _(have) lunch at 12:30.Lily and Lucy_(go) to school every week.The cat doesnt _(eat) fish everyday.The dogs_(play)on the floor everyday.-第 2 页-