被动语态.pptam/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),)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。'-:am/is/aredone一般过去时:was/weredone现在进行时:am/is/arebeingdone过去进行时:was/werebeingdone现在完成时:have/hasbeendone过去完成时:hadbeendone一般将来时:shall/willbedone;begoingtobedone当句中含有情态动词时,句子结构为can/must/haveto….(1)(byus).Thissongisoftenheard(byus)tobesung(bythem)..(2)/…..感官动词feel/see/hear….befelt/seen/heard….=KatewassentaletterbyBoblastyear.=…toHetoldJimastory.
被动语态 来自淘豆网www.taodocs.com转载请标明出处.