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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1、语法学习含情态动词的被动语态GrammaticalStudyPassiveVoicewithModalVerbsBySonnyWong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.Teenagersshouldbeallowedt

2、owatchTVonSunday(byus).2.Mymothercancookdeliciousmeals.Deliciousmealscanbecooked(bymymother).3.Peoplemaycatchfishintheriver.Fishmaybecaughtintheriver(bypeople).4.wemustkeepteenagersawayfromtheInternet?TeenagersmustbekeptawayfromtheInternet.can/couldmustshou

3、ldmay/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.canbemended

4、4.Youngtreesshould________everyyear.A.beplantedB.plantedC.plantD.areplanted1.Yourhomeworkshouldbefinishedfirst.Yourhomeworkshouldn'tbefinishedfirst.Shouldyourhomeworkbefinishedfirst?2.Thismagazinecanbetakenhome.Thismagazinecan'tbetakenhome.Canthismagazinebe

5、takenhome?3.Treesmustbewateredeveryday.Treesmustn'tbewateredeveryday.Musttreesbewateredeveryday?情态动词+not+be+过去分词can/couldmustshouldmay/mighthadbetternotbedone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/mi

6、ght+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？ThanksforyourReview!