英语被动语态介绍.ppt

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1、被动语态(PassivVoice)1．何时运用被动语态：（1）强调动作的接受者：AmericawasdiscoveredbyColumbus.（2）不知谁是动作的执行者：Youarewantedonthephone.2．主动变被动的基本方法：（1）主动语态中的宾语变为被动语态的主语。（2）谓语动词变为由“be+过去分词”的形式，配合时态作相应变化。（3）主动语态主语置于介词by之后，如无必需，则省略。（4）不及物动词没有被动语态。(die,exist,appear,disappear…)现在do(does)→am/is/are+do

2、neWekeepthepianointheliving-room.→Thepianoiskeptintheliving-room.过去did→was/were+doneTheybuiltthebridgein1980.→Thebridgewasbuiltin1980.将来shall/willdo→will+be+doneHewillreadthebooktomorrow.→Thebookwillbereadtomorrow.现在完成have/hasdone→has+been+doneWehavedeliveredthenewspap

3、er.→Thenewspapershavebeendelivered(byus).现在进行Are/am/isdoing→is+being+doneTheyaredrawingthepicture.→Thepictureisbeingdrawnbythem.过去进行Were/wasdoing→was+being+doneHewasreviewingtheirlessonsatthismomentyesterday.→Theirlessonswerebeingreviewedatthismomentyesterday.情态动词must

4、maycanshoulddo→should+be+doneYoumustwriteanarticleonthesubject.→Anarticlemustbewrittenonthesubject.