人教版必修二Unit3Grammar现在完成时的被动语态课件.pptVIP

人教课标高一必修2Unit3

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GrammarPassiveVoice

经典题型：1.Theycleantheclassroomeveryday.Theclassroomiscleanedbythemeveryday.2.Theycleanedtheclassroomyesterday.Theclassroomwascleanedbythemyesterday.3.Theywillcleantheclassroomtomorrow.Theclassroomwillbecleanedbythemtomorrow.4.Theymustcleantheclassroomafterclass.Theclassroommustbecleanedbythemafterclass.

Summary:被动语态的构成：be+done（过去分词）1.一般现在时：amisdoneare２、一般过去时：wasdonewere3.一般将来时：willbedoneshall4.含有情态动词:canmaymustbedoneshouldhaveto

现在完成时的被动:has/havebeen+done1.表示过去开始的被动动作一直持续到现在，常与之连用的时间状语有：for+一段时间，since+时间状语（从句），thesedays,sofar,uptonow,inthelast/pastfewyears等。e.gUptonow,halfofthebooshavebeenreadbythestudents.2.表示某被动动作对现在造成的影响或结果，常与already,yet,just,ever,never,recently等连用。e.g.IhavealreadybeenintroducedtoMr.Smith.

一般过去时则是表示过去某时发生的动作或情况,与现在没有关系。一般过去时常与表示确定的过去时间的状语连用,如:yesterday,twoweeksago,in1978,等,e.g.Themachinehasbeenrepaired．机器已经修好了。(说明动作发生在过去，对现在有影响，修好了。)Themachinewasrepairedyesterday．机器昨天修了。(只说明动作发生在昨天。)

句型1.现在完成时被动语态肯定句主语+has/havebeen+动词的过去分词Hermotorbikehasbeenstolen.她的摩托车被盗了。Alltheofficeshavebeenlinkedbycomputer.所有的售票处由计算机联网工作。

2.Theyhaven’tbeentoldaboutityet.否定式：_____________________+及物动have/has+not+been词的过去分词。3.—Havehisbooksbeensoldout?—Yes.Soyoucan’tbuyonenow.一般疑问句形式：Have/Has+主语+been去___分__词__。_______________+及物动词的过

Howmanyexperimentshavebeendonebythestudentsthismonth?特殊疑问句形式：疑问词+have/has+been+及物动词的过去分词。

并不是所有动词都有被动语态happen,takeplace,breakout,belongto,cost,last等不及物动词或词组无被动语态。[误]GreatchangeshavebeentakenplaceinChinasince1978.[正]GreatchangeshavetakenplaceinChinasince1978.

一、单项选择1.Bothmybrothersworkatthepowerstationthat___inmyhometown.BA.hassetupB.hasbeensetupC.wassetupD.issetup2.---_____thesportsmeetwillbeputoff.AA.I’vebeentoldB.I