被动语态讲解和练习教学内容.ppt

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1、被动语态讲解和练习结构：be+动词的过去分词意义：强调主语是动作的承受者各种时态的主动语态和被动语态谓语结构对照表时态主动语态被动语态1一般现在时do/doesam/is/are+过去分词2一般过去时didwas/were+过去分词3一般将来时will/begoingto+动词原形will/begoingto+be+过去分词4过去将来时would+动词原形would+be+过去分词5现在进行时am/is/are+现在分词am/is/are+being+过去分词6过去进行时was/were+现在分词was/were+being+过去

2、分词7现在完成时have/has+过去分词have/has+been+过去分词8过去完成时had+过去分词had+been+过去分词9含情态动词情态动词+动词原形情态动词+be+过去分词变化：示例Theboybroketheglass.Theglasswasbrokenbytheboy.从主动语态变为被动语态1.主语介词by+宾语2.谓语加be,并变为过去分词3.宾语主语1.Theymakeshoesinthefactory.主语+及物动词+宾语Shoesaremade(bythem)inthefactory.一般现在时：主语+a

3、m/is/are+过去分词变为被动语态2.Theyboughttencomputerslastterm．Tencomputerswerebought(bythem)lastterm.一般过去时：主语+was/were+过去分词3.Tomwillcleantheroomtomorrow.主谓宾TheroomwillbecleanedbyTomtomorrow.一般将来时：主语+willbe+过去分词4.Someworkersarepaintingtheroomsnow．Theroomsarebeingpaintedbysomewor

4、kersnow.现在进行时：主语+am/is/are+being+过去分词5．Iwasdoingmyhomeworkat8:00lastnight．Myhomeworkwasbeingdone(byme)at8:00lastnight.过去进行时：主语+was/were+being+过去分词6．Wehavemadetwentymorekeys．Twentymorekeyshavebeenmadebyus.现在完成时：S+have/has+been+过去分词7．AmycantakegoodcareofGina．Ginacanbeta

5、kengoodcareofbyAmy.情态动词：S+can/may/must/should+be+过去分词am/is/are+done(过去分词)一般现在时2)has/havebeendone现在完成时3)am/is/arebeingdone现在进行时4)was/weredone一般过去时5)hadbeendone过去完成时Visitorsareaskednottotouchtheexhibits.(展品）AllthepreparationsforthetaskhavebeencompletedAnewcinemaisbeingb

6、uilthere．Iwasgiventenminutestodecide.Bytheendoflastyear,anothernewgymhadbeencompletedinBeijing.6)was/werebeingdone过去进行时7)shall/willbedone一般将来时8）should/wouldbedone过去将来时被动语态的特殊结构形式 1）带情态动词的被动结构其形式为：情态动词＋be＋过去分词。AmeetingwasbeingheldwhenIwasthere.Hundredsofjobswillbelost

7、ifthefactorycloses.Thenewswouldbesenttothesoldier'smotherassoonasitarrived.Thebabycanbetakengoodcareofbythebaby-sitter.主动语态变被动语态应注意的问题1.把主动语态变为被动语态时，应保留主动语态原来的时态。如：Sheoftencleansthehouse.Thehouseisoftencleanedbyher.2.有些动词可以有双宾语，在用于被动结构时，通常变为主语的是间接宾语（sb.）Hismothergaveh

8、imapresentforhisbirthdayHewasgivenapresentforhisbirthdaybyhismother.带双宾语的句子有两种改法:一般情况下把指人的宾语作为被动句的主语.当把直接宾语物作为主语时，要加介词to,for