情态动词的被动语态课件

1、n 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教室必须必须天天打扫打扫nClassroom every day

2、.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 mountains. shouldnt be plantedmus

3、t not be takenMany 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 allowed8.木头能做桌子吗？是的，能。n tables of wood ? nYes , they of wood.n

4、9.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 done11.Parents should allow fourteen-year-olds to choose their own clothes. nFourteen-year-olds to choose their own clothes （by parents）n12.Teachers can use cartoons to give exa

5、mples in class about aids.nKartoons to give examples in class about aids.should be allowedcan be used13.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 flower now.nThe flower by you now.can be fixedmay be usedmu

6、st be watered16. 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 wateredshould be done19.You must pay attention to your pronunciation

7、nYour 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 dug22.You must not plant trees in very dry earth. nTrees in very dry earth.n23.在学校必须要遵守校规。在学校必须要遵守校规。nSchool rules at school.n24.交通规则需要遵守吗？是的，必须要遵交通规则需要遵守吗？是的