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1、关于情态动词的被动语态第一页，讲稿共十一页哦 n语态的种类：和 。n主动语态：表示主语是 。n 被动语态：表示主语是 。n被动语态结构：be+p.p.(动词的过去分词)n情态动词的被动语态：情态动词+be+p.pn问题：情态动词+be+p.p.这一结构怎么进行句型转换？主动语态被动语态 情态动词被动语态动作的执行者动作的执行者动作的承受者动作的承受者第二页，讲稿共十一页哦含有情态动词的句子进行句型转换时只针对 ，要么在后 ,把 提前。n例子:1We should allow teenagers to watch n 主语 谓语动词 宾语nTv on the weekend.n2教室必须必须天天
2、打扫打扫nClassroom every day.情态动词情态动词Teenagers should be allowed to watch Tvon Sunday(by us).must be cleaned加加not情态动词情态动词第三页，讲稿共十一页哦3稻谷不应该种不应该种在山上nRice on the hill.n4.You must not take these magazines out of the reading-room.nThese magazines out ofnthe reading-room.n5.We should plant many trees on the m
3、ountains.shouldnt be plantedmust not be taken第四页，讲稿共十一页哦Many trees on the mountains.n6.应该允许青少年和朋友们一起出去。nTeenagers to go out with their friends.n7.孩子们应当被允许星期五晚上和朋友们一起去看电影。The children to go to the movies with friends on Friday nights.should be plantedshould be allowedshould be allowed第五页，讲稿共十一页哦8.木头能
4、做桌子吗？是的，能。n tables of wood?nYes,they of wood.n9.废纸不应该扔在这里。nWaste paper here.n10.这件事应该是李明干吗？n the thing by Li Ming？Can be madecan be madeshould not be thrownShouldbe done第六页，讲稿共十一页哦11.Parents should allow fourteen-year-olds to choose their own clothes.nFourteen-year-olds to choose their own clothes（b
5、y parents）n12.Teachers can use cartoons to give examples in class about aids.nKartoons to give examples in class about aids.should be allowedcan be used第七页，讲稿共十一页哦13.He can fix the computer.The computer by him.n14.Students may use the computers here.nThe computers by students.n15.You must water the
6、flower now.nThe flower by you now.can be fixedmay be usedmust be watered第八页，讲稿共十一页哦16.You should water the flower now.The flower by you nown17.We can repair this watch in two.n18.We should do the work as soon as possible.nThe work as soon as possible.This watch can be repaired in two daysshould be w
7、ateredshould be done第九页，讲稿共十一页哦19.You must pay attention to your pronunciationnYour pronunciation attention to(by you).n20.We can finish the work in two days.n The work in two days n21.You can dig a hole in the earth nA Hole in the earth must be paidcan be finishedcan be dug第十页，讲稿共十一页哦感谢大家观看感谢大家观看第十一页，讲稿共十一页哦