情态动词的被动语态讲课教案.ppt

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1、含情态动词的被动语态can/couldbedonemustbedoneshouldbedonemay/mightbedonehadbetterbedonehavetobedone含情态动词的被动语态：情态动词+be+PP疑问式：情态动词+主语+be+p.pcan/could+主语+bedonemust+主语+bedoneshould+主语+bedonemay/might+主语+bedonehad+主语+betterbedonehave+主语+tobedone1.Icanfinishthework.Theworkcanbefinishedbym

2、e.Cantheworkbefinishedbyyou?2.Weshouldplantmanymoretrees.Manymoretreesshouldbeplantedbyus.Shouldmanymoretreesbeplantedbyus?Teenagersshouldbeallowedbyparentstodrivethecar.3.Parentsshouldallowteenagerstodrivethecar.Shouldteenagersbeallowedbyparentstodrivethecar?4.Youcanpassth

3、eexamifyoustudyhard.Theexamcanbepassed(byyou)ifyoustudyhard.Cantheexambepassed(byyou)ifyoustudyhard?water(浇水)Treesmustbewateredbythemeveryday.Theymustwatertreeseveryday.Musttreesbewateredbythemeveryday?Peoplemaycatchfishintheriver.Fishmaybecaughtintheriver(bypeople).Practic

4、e:1.Mymothercancookdeliciousmeals.Deliciousmealscanbecookedbymymother.2.Studentswillusethesetextbooksnextterm.Thesetextbookswillbeusednexttermbystudents.3.Youshouldwatertreesoften.Treesshouldbewateredbyyouoften.4.Youmustnotplanttreesinverydryearth.Treesmustnotbeplantedbyyou

5、inverydryearth.3.Sixteen-year-oldsshouldbeallowedtodrive.(先改为否定句，再改一般疑问句)Shouldsixteen-year-oldsbeallowedtodrive?Sixteen-year-oldsshouldn’tbeallowedtodrive.Yestheyshould./No,theyshouldn’t.4.Ithinktheworkshouldbedoneatonce.(改为否定句)Idon’tthinktheworkshouldbedoneatonce.Drills:1

6、.Weshouldlookafterelderpeopleverywell.2.Weshouldanswerthesequestionsassoonaspossible.3.Wemustcleanourclassroomthisafternoon.4.Youmusthandinyourhomeworkbeforenineo’clock.5.Youcanbringyourfriendstomybirthdaypartytomorrowevening.6.Youshouldn’ttouchthethingsondisplayinthemuseum

7、.7.Theymaygrowfruittreesaroundvillagenextspring.