人教版必修 第二册Unit 3 The internet Discovering Useful Structures 课件（共22张ppt）.pptxVIP

PresentPerfectPassiveVoice（现在完成时的被动语态）高一英语

ObservinganddiscoveringActivity1:Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.Howdoweformthepresentperfectpassivevoice?

have/hasbeen+v-edObservinganddiscoveringActivity1:Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Howdoweformthepresentperfectpassivevoice?VerbformActivePassivehave/has+v-ed

Discussion:WhataspectsinyourlifehavebeenchangedsincetheappearanceoftheInternet?ObservinganddiscoveringBeforeAfterTransportReadingPaymentEntertainment...

Talkaboutsomethingthathasbeendone现在完成时的被动语态Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.

Thestudentshavecleanedtheclassroom.Theclassroomhasbeencleaned.Youneedn’tcleanitnow.现在完成时activepassive表示说话时已经完成的被动性的动作或结果，主语是动作的承受者。现在完成时的被动语态

现在完成时被动语态have/hasbeendone现在完成时的被动语态bedonehave/hasbeenHowdoweformthepresentperfectpassivevoice?现在完成时的被动语态

肯定形式：Hishomeworkhasbeenfinished.否定形式：Hishomeworkhasnotbeenfinished.一般疑问句:Hashishomeworkbeenfinishedyet?特殊疑问句：Howlonghashishomeworkbeenfinished?主语+have/hasbeendone...主语+have/hasnotbeendone...have/has+主语+beendone...?疑问词+have/has+主语+beendone...?结构形式现在完成时的被动语态

1. Beforeuse,the_________mustbecharged.2. Wehavedevelopedanewtypeofsoftwarewithmany_________(function).3. Icalledtheairport__________(confirm)myflightreservationaweekbeforeIleftforBeijing.4. Inrecentyears，stresshasbeenrega