情态动词的被动语态.ppt

含情态动词的被动语态 can/could be done must be done should be done may/might be done had better be done have to be done 含情态动词的被动语态： 情态动词+be +PP 否定式：情态动词 can/could not be done must not be done should not be done may/might not be done had better not be done have not to be done 疑问式：情态动词+ 主语 can/could +主语 +be done must +主语 + be done should +主语 + be done may/might +主语 + be done had +主语 + better be done have +主语 + to be done 1.I can finish the work. The work can be finished by me. Can the work be finished by you? should plant many more trees. Many more trees should be planted by us. Should many more trees be planted by us? Teenagers should be allowed by parents to drive the car . 3.Parents should allow teenagers to drive the car. Should teenagers be allowed by parents to drive the car ? 4.You can pass the exam if you study hard. The exam can be passed (by you) if you study hard. Can the exam be passed (by you) if you study hard? water(浇水) Trees must be watered by them every day. They must water trees every day. Must trees be watered by them every day? People may catch fish in the river. Fish may be caught in the river (by people).