初三第七单元语法专项聚集-含有情态动词的被动语态PPT课件

语法学习,含情态动词的被动语态,GrammaticalStudy,PassiveVoicewithModalVerbs,BySonnyWong,1,.,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),2,.,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,.,3.Peoplemaycatchfishintheriver.,Fishmaybecaughtintheriver(bypeople).,4.wemustkeepteenagersawayfromtheInternet?TeenagersmustbekeptawayfromtheInternet.,4,.,can/couldmustshouldmay/mighthadbetterhaveto,情态动词+be+过去分词,bedone,结构,5,.,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,6,.,1.Yourhomeworkshouldbefinishedfirst.Yourhomeworkshouldntbefinishedfirst.Shouldyourhomeworkbefinishedfirst?2.Thismagazinecanbetakenhome.Thismagazinecantbetakenhome.Canthismagazinebetakenhome?,7,.,3.Treesmustbewateredeveryday.Treesmustntbewateredeveryday.Musttreesbewateredeveryday?,8,.,情态动词+not+be+过去分词,can/couldmustshouldmay/mighthadbetter,notbedone,否定式,9,.,情态动词+主语+be+过去分词,Can/CouldMustShouldMay,+主语bedone？,一般疑问式,10,.,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？,11,.,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