含情態(tài)動詞被動語態(tài)課件

語法學習含情態(tài)動詞的被動語態(tài)語法學習含情態(tài)動詞的被動語態(tài)含情態(tài)動詞的被動語態(tài)常用的情態(tài)動詞有：can,could(能；會),may;might(可以)must(必須),should(應該),would(愿意)haveto(必須；不得不),hadbetter(最好做)含情態(tài)動詞的被動語態(tài)常用的情態(tài)動詞有：can,could主動句變被動句的步驟與其它情況相同。1.WeshouldallowteenagerstowatchTVonSunday.

TeenagersshouldbeallowedtowatchTVonSunday(byus).2.Mymothercancookdeliciousmeals.Deliciousmealscanbecooked(bymymother).主動句變被動句的步驟與其它情況相同。1.Weshould3.Peoplemaycatchfishintheriver.Fishmaybecaughtintheriver(bypeople).

4.wemustkeepteenagersawayfromtheInternet?TeenagersmustbekeptawayfromtheInternet.3.Peoplemaycatchfishinth

can/couldmustshouldmay/mighthadbetterhaveto

情態(tài)動詞+be+過去分詞bedone結構can/couldbedone結構1.Theflowers___often.A.mustbewaterB.mustbewateredC.mustwateredD.mustwater2.Thebooksmay___fortwoweeks.A.bekeptB.beborrowedC.keepD.borrow3Thebrokenbike____herebyMrSmith.A.canmendB.canmendedC.canbemendD.canbemended4.Youngtreesshould________everyyear.A.beplanted B.planted C.plantD.areplanted1.Theflowers___often.1.Yourhomeworkshouldbefinishedfirst.Yourhomeworkshouldn'tbefinishedfirst.Shouldyourhomeworkbefinishedfirst?2.Thismagazinecanbetakenhome.Thismagazinecan'tbetakenhome.Canthismagazinebetakenhome?1.Yourhomeworkshouldbefini3.Trees

mustbewatered

everyday.Trees

mustn'tbewatered

everyday.

Must

trees

bewatered

everyday?

3.Treesmustbewateredevery情態(tài)動詞+not+be+過去分詞

can/couldmustshouldmay/mighthadbetternotbedone否定式情態(tài)動詞+not+be+過去分詞can/could情態(tài)動詞+主語+be+過去分詞

Can/CouldMustShouldMay+主語bedone？一般疑問式情態(tài)動詞+主語+be+過去分詞Can/Could+疑問詞+情態(tài)動詞+主語+be+過去分詞

can/couldmustshouldmay/might+主語bedone？疑問詞特殊疑問式Whenmustthistaskbefinished?

這項任務必須在什么時候完成？疑問詞+情態(tài)動詞+主語+be+過去分詞can/co含情態(tài)動詞的被動語態(tài)肯定句:主語+情態(tài)動詞+be+動詞過去分詞.否定句:主語+情態(tài)動詞+not+be+動詞過去分詞.一般疑問句:情態(tài)動詞+主語+be+動詞過去分詞?特殊疑問句：特殊疑問詞+情態(tài)動詞+主語+be+過去分詞？含情態(tài)動詞的被動語態(tài)肯定句:主語+情態(tài)動詞+be+動4aRewritethesentencesaccordingtotheexample.1.Youmustcleanyourbedroomeveryday.Yourbedroommustbecleanedeveryday.

2.Parentsshouldencourageteenagerstodosocialworkfortheircommunity.

Teenagers_________________________________________________________________.3.CanLucydoherhomeworktomorrowinstead?Can_________________________________

_____________________________________?shouldbeencouraged(bytheirparents)todosocialworkfortheircommunitythehomeworkbedone(byLucy)tomorrowinsteadn.

社區(qū)，社團4aRewritethesentencesaccor4.Doyouthinkwemustkeepteenagers

awayfromtheInternet?Doyouthinkteenagers____________________________________?5.Parentsshouldgiveteenagerschancesto

maketheirowndecisions.

Teenagers____________________________________

____________________________________mustbekeptawayfromtheInternetshouldbegivenchancestomaketheirowndecisions.keep…awayfrom避免接近，遠離n.

機會，可能性自己做決定4.DoyouthinkwemustkeeptShouldteenagers_______(ask)tomoveoutwhentheystartworking?InmanyWesterncountries,teenagers____________(allow)tomoveoutateighteen.Theirparentsbelievethattheyshould____________(educate)totakecareofthemselvesfromayoungage.Thisway,whenthey______(start)workingtheycanmanagetheirownlives.4b

Fillintheblankswiththecorrectformsofthewordsinbrackets.beaskedareallowedbeeducatedstartv.

教育；教導v.

完成；應付Shouldteenagers_______(ask)However,inmostAsiansocieties,itisnotcommonforteenagersto_____(move)out.Chineseparentsbelievethatitisbetterforchildrentolivewithparentswhocan_____(take)careofthem.Buttheyoungshouldthenlookaftert