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1、关于含情态动词的被动语态第一页，讲稿共十七页哦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)第二页，讲稿共十七页哦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 meal
2、s can be cooked(by my mother).第三页，讲稿共十七页哦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.第四页，讲稿共十七页哦 can/could must should may/might had better have to 情态动词+be+过去分词第五页，讲稿共十七页
3、哦1.The flowers _often.A.must be water B.must be watered C.must watered D.must water2.The books may_ for two weeks.A.be kept B.be borrowed C.keep D.borrow3 The broken bike_ here by Mr Smith.A.can mend B.can mended C.can be mend D.can be mended4.Young trees should _ every year.A.be plantedB.planted C.
4、plant D.are planted第六页，讲稿共十七页哦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?第七页，讲稿共十七页哦3.Trees must be watered every day.Trees
5、 mustnt be watered every day.Must trees be watered every day?第八页，讲稿共十七页哦情态动词+not+be+过去分词 can/could must should may/might had better第九页，讲稿共十七页哦情态动词+主语+be+过去分词 Can/Could Must Should May第十页，讲稿共十七页哦疑问词+情态动词+主语+be+过去分词 can/could must should may/mightWhen must this task be finished?这项任务必须在什么时候完成？第十一页，讲稿共十
6、七页哦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？第十二页，讲稿共十七页哦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 encourage teenagers to do soc
7、ial work for their community.Teenagers _ _.3.Can Lucy do her homework tomorrow instead?Can _ _?should be encouraged(by their parents)to do social work for their community the homework be done(by Lucy)tomorrow insteadn.社区，社团第十三页，讲稿共十七页哦4.Do you think we must keep teenagers away from the Internet?Do y
8、ou think teenagers _?5.Parents should give teenagers chances to make their own decisions.Teenagers _ _ must be kept away from the Internetshould be given chances to make their own decisions.keepaway from 避免接近，远离n.机会，可能性自己做决定第十四页，讲稿共十七页哦Should teenagers _(ask)to move out when they start working?In ma
9、ny Western countries,teenagers _(allow)to move out at eighteen.Their parents believe that they should _(educate)to take care of themselves from a young age.This way,when they _(start)working they can manage their own lives.4b Fill in the blanks with the correct forms of the words in brackets.be aske
10、dare allowedbe educatedstartv.教育；教导v.完成；应付第十五页，讲稿共十七页哦However,in most Asian societies,it is not common for teenagers to _(move)out.Chinese parents believe that it is better for children to live with parents who can _(take)care of them.But the young should then look after their parents as they get older.That is why many Chinese adults _(continue)to live with their parents.movetakecontinuen.社会第十六页，讲稿共十七页哦感谢大家观看第十七页，讲稿共十七页哦