初三第七单元语法专项聚集-含有情态动词的被动语态.pptx

初三第七单元语法专项聚集-含有情态动词的被动语态.pptx

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语法学习,含情态动词的被动语态,GrammaticalStudy,PassiveVoicewithModalVerbs,BySonnyWong,含情态动词的被动语态,常用的情态动词有：

can,could（能；会）,may;might（可以）must（必须）,should（应该）,would（愿意）haveto（必须；不得不）,hadbetter（最好做）,主动句变被动句的步骤与其它情况相同。

1.WeshouldallowteenagerstowatchTVonSunday.,TeenagersshouldbeallowedtowatchTVonSunday（byus）.,2.Mymothercancookdeliciousmeals.Deliciousmealscanbecooked（bymymother）.,3.Peoplemaycatchfishintheriver.,Fishmaybecaughtintheriver（bypeople）.,4.wemustkeepteenagersawayfromtheInternet?

TeenagersmustbekeptawayfromtheInternet.,can/couldmustshouldmay/mighthadbetterhaveto,情态动词+be+过去分词,bedone,结构,1.Theflowers_often.A.mustbewaterB.mustbewateredC.mustwateredD.mustwater2.Thebooksmay_fortwoweeks.A.bekeptB.beborrowedC.keepD.borrow3Thebrokenbike_herebyMrSmith.A.canmendB.canmendedC.canbemendD.canbemended4.Youngtreesshould_everyyear.A.beplantedB.plantedC.plantD.areplanted,1.Yourhomeworkshouldbefinishedfirst.Yourhomeworkshouldntbefinishedfirst.Shouldyourhomeworkbefinishedfirst?

2.Thismagazinecanbetakenhome.Thismagazinecantbetakenhome.Canthismagazinebetakenhome?

3.Treesmustbewateredeveryday.Treesmustntbewateredeveryday.Musttreesbewateredeveryday?

情态动词+not+be+过去分词,can/couldmustshouldmay/mighthadbetter,notbedone,否定式,情态动词+主语+be+过去分词,Can/CouldMustShouldMay,+主语bedone？

一般疑问式,疑问词+情态动词+主语+be+过去分词,can/couldmustshouldmay/might,+主语bedone？

疑问词,特殊疑问式,Whenmustthistaskbefinished?

这项任务必须在什么时候完成？

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？

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