初三英语语法课件被动语态.ppt

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1、被动语态复习课英语动词有两种语态：主动语态和被动语态。1.当我们不知道谁是动作的执行者,2.或者只需强调动作的承受者时，要用被动语态。时态：1.一般现在时：2.一般过去时：3.一般将来时：4.情态动词的被动语态：被动语态结构：■■■be+过去分词(PP)+(by…)am/is/are+ppwas(were)+ppwill(shall)/begoingto+be+ppmust(can,may等)+be+pp在改写中应注意：1.把原来的宾语提到前面作被动语态的主语;2.把动词变成“be+过去分词”;3.主动语态中的主语变为介词by

2、的宾语。典型题例例1将下列句子改为被动语态。Wecleanourclassroomeveryday.Ourclassroomiscleaned(byus)everyday.基础知识复习一般现在时的被动语态：am/are/is+过去分词Peopleplayfootballallovertheworld.2.Mr.Greenteachesusthisterm.Footballallovertheworld.Wethisterm.isplayedbypeoplearetaught(byMr.Green)一般过去时的被动语态：was/w

3、ere+过去分词4.PeoplebuilttheGreatWalllongago.5.Twoyearsagoweusedthemachinestomakeshoesforchildren.TheGreatWalllongago.Twoyearsagothosemachinesshoesforchildren.wasbuilt(bypeople)wereused(byus)tomake一般将来时的被动语态：will/begoingto+be+过去分词6.Wewillwriteadiarynextclass.7.Tomisgoin

4、gtoholdabirthdayparty.Adiarynextclass.Abirthdayparty.willbewritten(byus)isgoingtoheldbyTom情态动词的被动语态：must/haveto/can等+be+过去分词8.Youmustthrowthebrokenpotteryawayatonce.9.Wehavetofinishourhomeworkontime.Thebrokenpotteryatonce.Ourhomework.mustbethrownaway(byyou)hastobefi

5、nished(byus)ontime知　识　拓展思考1：将下列的主动句变为被动语态：10．Wegavehimsomebooks.→He.→Somebooks.wasgivensomebooks(byus)weregiventohim(byus)小结5：带有双宾语（宾语既有人又有物）的被动结构是:（1）将间接宾语(人)变为主语，直接宾语(物)不变。（2）将直接宾语(物)变为主语，一般要在间接宾语前加介词to或for.思考2：12．IusuallyhearhersingEnglishsongsinthemorning.Sheinth

6、emorning.isusuallyheardtosingEnglishsongs14．Hemakesherhorseworkallday.Herhorseallday.15.Myfatherletmegooutforapicnic.Ioutforapicnic.ismadetoworkwaslettogo小结6：一些特殊结构的被动结构:（1）感觉动词(hear,see等)改被动语态（2）使役动词(let,make等)改被动语态如动词为make,see,hear,watch等，后接宾语补足语为不带“to”不定式时，变被动语态时要

7、加上“to”。如：Isawhimfalloffthetree.→Hewasseentofalloffthetree.知识运用一、单项选择：1.Onlythirty-eightideasbythenewspaper.A.chooseB.choseC.waschosenD.werechosen2.Asusual,Meihuaat6:30thismorningbyhermothertogetreadyforschool.（2006）A.haswokenupB.wokeupC.wakesupD.waswokenupDD3．Aneighb

8、ourhelpedtokeepourdog.Itwhilewewereonholiday.(2005)A.wastakencareB.tookcareofC.istakencareofD.wastakencareof4.AttheendofthemeetingM