初中英语被动语态PPT课件.ppt

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1、被动语态一概念主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者。在以下情况中使用被动语态：1.讲话者不知道动作的执行者或不必说出动作的执行者时。（eg）Mybikewasstolenlastnight.2.借助被动的动作突出动作的执行者。（eg）IwasgiventenminutestodecidewhetherIshouldaccepttheoffer.3.为了更好地安排句子。（eg）Thewell-knownpersongotonthebusandwasimmediatelyrecognizedbypeople.二构成1.被动语态的基本时态变化以do

2、为例，各种时态的被动语态形式为：1）am/is/are+done一般现在时（eg）Visitorsarerequestednottotouchtheexhibits.2）has/havebeendone现在完成时（eg）Allthepreparationsforthetaskhavebeencompleted,andwe'rereadytostart.3）am/is/arebeingdone现在进行时（eg）Anewcinemaisbeingbuilthere．4）was/weredone一般过去时（eg）Iwasgiventenminutestodecidewhet

3、herIshouldrejecttheoffer.5）hadbeendone过去完成时（eg）Bytheendoflastyear,anothernewgymnasiumhadbeencompletedinBeijing.6）was/werebeingdone过去进行时（eg）AmeetingwasbeingheldwhenIwasthere.二构成7）shall/willbedone一般将来时（eg）Hundredsofjobswillbelostifthefactorycloses.8）should/wouldbedone过去将来时（eg）Thenewswould

4、besenttothesoldier'smotherassoonasitarrived.二构成2.情态动词的被动语态结构为：情态动词+be+过去分词其时态及句型的变化仅由情态动词完成，“be+过去分词”部分不变。如：Tablescanbemadeofstone.Tablescouldbemadeofstoneatthattime.Cantablesbemadeofstone?二构成三被动语态的几种类型：1主动句中有一个宾语的被动语态Hesawherintheshopyesterday.Shewasseenintheshopyesterday.2主动句中有二个宾语的被动

5、语态Jimgavemeabook.IwasgivenabookbyJim.AbookwasgiventomebyJim.3主动句中含有宾语补足语句子的被动语态Mothertoldmenottobelate.Iwastoldnottobelatebymother.Isawmotherplantingflowersinthegarden.Motherwasseenplantingflowersinthegarden.Theymadehimwork12hoursaday.Hewasmadetowork12hoursaday.4短语动词的被动语态Icantakegoodcar

6、eofthebaby.Thebabycanbetakengoodcareof.1．becoveredwith被……覆盖2．bemadeof由……制作（发生物理变化）bemadefrom由…制作（发生化学变化）bemadein由（某地）制造bemadeby被（某人）制造3．beusedfor被用来……beusedas被当作（作为）……来使用beusedtodosth．被用来做某事4．Itissaidthat．．．据说……Itishopedthat．．．希望……Itiswellknownthat．．．众所周知……牢记（相关）句型Practice:1MustIpayf

7、oritatonce?_____it______________atonce?2Wewillbuildanewlab.Anewlab_____________.3Theyaren’tstoppingthetrafficnow.Thetraffic_______________now.4Howlonghaveyoukeptthebook?Howlong____thebook________?Mustbepaidforwillbebuiltisn’tbeingstoppedhasbeenkept5Ifyourhomework______(do)well,