含情态动词的被动语态_图文.ppt

* * * * 含情态动词的被动语态 含情态动词的被动语态 can, could (能；会), may; might (可以) must(必须), should(应该), would(愿意) have to(必须；不得不), had better(最好做) 1. We should allow teenagers to watch TV on Sunday. Teenagers should be allowed to watch TV on Sunday( by us) . 2. My mother can cook delicious meals. Delicious meals can be cooked ( by my mother ). 3. People may catch fish in the river. Fish may be caught in the river (by people). 4.we must keep teenagers away from the Internet? Teenagers must be kept away from the Internet. can/could must should may/might had better have to 情态动词+be +过去分词 1.The flowers ___often. A. must be water B. must be watered C. must watered D. must water 2. The books may___ for two weeks. A. be kept B. be borrowed C. keep D. borrow 3 The broken bike____ here by Mr Smith. A. can mend B. can mended C. can be mend D. can be mended 4.Young trees should ________ every year. A. be planted B. planted C. plant D. are planted 1.Your homework should be finished first. Your homework shouldnt be finished first. Should your homework be finished first ? 2. This magazine can be taken home. This magazine cant be taken home. Can this magazine be taken home ? 3. Trees must be watered every day. Trees mustnt be watered every day. Must trees be watered every day? 情态动词+not + be + 过去分词 can/could must should may/might had better 情态动词+ 主语+ be + 过去分词 Can/Could Must Should May 疑问词+情态动词+ 主语+ be + 过去分词 can/could must should may/might When must this task be finished? 这项任务必须在什么时候完成？ 含情态动词的被动语态 肯定句: 主语+ 情态动词+ be+ 动词过去分词. 否定句: 主语+ 情态动词+ not+ be+动词过去分词. 一般疑问句: 情态动词+ 主语+ be+ 动词过去分词? 特殊疑问句：特殊疑问词+ 情态动词+ 主语+ be + 过去分词 ？ 4a Rewrite the sentences according to the example. 1. You must clean your bedroom every day. Your bedroom must be cleaned every day. 2. Parents should encoura