含情态动词的被动语态课件.ppt

关于含情态动词的被动语态现在学习的是第1页，共17页含情态动词的被动语态含情态动词的被动语态can,could(能；会能；会),may;might(可以可以)must(必须必须),should(应该应该),would(愿意愿意)have to(必须；不得不必须；不得不),had better(最好做最好做)现在学习的是第2页，共17页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).现在学习的是第3页，共17页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.现在学习的是第4页，共17页 can/could must should may/might had better have to 情态动词情态动词+be+过去分词过去分词现在学习的是第5页，共17页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 planted B.planted C.plant D.are planted现在学习的是第6页，共17页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?现在学习的是第7页，共17页3.Trees must be watered every day.Trees mustnt be watered every day.Must trees be watered every day?现在学习的是第8页，共17页情态动词情态动词+not+be+过去分词过去分词 can/could must should may/might had better现在学习的是第9页，共17页情态动词情态动词+主语主语+be+过去分词过去分词 Can/Could Must Should May现在学习的是第10页，共17页疑问词疑问词+情态动词情态动词+主语主语+be+过去分词过去分词 can/could must should may/mightWhen must this task be finished?这项这项任任务务必必须须在什么在什么时时候完成？候完成？现在学习的是第11页，共17页含情态动词的被动语态含情态动词的被动语态肯定句肯定句:主语主语+情态动词情态动词+be+be+动词过去分词动词过去分词.否定句否定句:主语主语+情态动词情态动词+notnot+be+be+动词过去分词动词过去分词.一般疑问句一般疑问句:情态动词情态动词+主语主语+be+be+动词过去分词动词过去分词?特殊疑问句：特殊疑问句：特殊疑问词特殊疑问词+情态动词情态动词+主语主语+be+be+过去分词过去分词？现在学习的是第12页，共17页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 social 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，社团现在学习的是第13页，共17页4.Do you think we must keep teenagers away from the Internet?Do you 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，可能性自己做决定自己做决定现在学习的是第14页，共17页Should teenagers _(ask)to move out when they start working?In many 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 askedare allowedbe educatedstartv.教育；教导教育；教导v.完成；应付完成；应付现在学习的是第15页，共17页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.社会社会现在学习的是第16页，共17页感谢大家观看现在学习的是第17页，共17页