人教版（2019） 必修第二册 Unit 3 The Internet Discovering Useful Structures课件

Unit3DiscoveringUsefulStructuresTalkaboutsomethingthathasbeendone1Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.主语谓语主语谓语hasbeendonehasbeendone主语谓语hasdone主语谓语hasdone

active（主动语态）

passive（被动语态）Howdoweformthepresentperfectpassivevoice?Fillintheblank.VerbformActive（主动）have/has+donePassive（被动）____________________have/has+been+done现在完成时被动语态的构成肯定式否定式一般疑问式特殊疑问式主+________________________________主+______________________________________________________________________________________________________have/has+been+donehave/has+not+been+doneHave/Has+主语+been+done…?疑问词

+have/has+主语+been+done…?2Changethesentencesintothepresentperfectpassivevoice.ExampleThey’vebuiltakindofnewPCwithmorefunctions.→AkindofnewPChasbeenbuiltwithmorefunctions.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.HaveyouconfirmedtheWi-Fipassword?Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.HastheWi-Fipasswordbeenconfirmed?主动被动主动被动高考链接【2022年新高考Ⅰ卷】Thecharity_______________(give)financialsupportrollitoutcountryside.该慈善机构已经获得财政支持，以便在全国范围内推广。hasbeengiven3现在完成时被动语态的用法强调过去的动作对现在造成的影响或结果，常与already,yet,just,never,ever,sofar,recently副词连用。表示动作从过去开始持续到现在，并可能持续下去，常与for,since引导的时间状语连用，或用于Howlong句型。用在时间或条件状语从句中，表示将来某时已经完成的动作，换言之，用现在完成时被动语态替代将来完成时的被动语态。Theclassroomlookspretty.Ithasjust____________(clean).Howlonghastheschool_____________(build)?Youshouldstayathomebeforeyourtask__________________(finish).beencleanedbeenbuilthasbeenfinished下列时间状语常与现在完成时连用alreadyyet(尚；已经)latelyrecentlysincetheneversinceever(曾经)foralongtimesofarbynowinrecentyearsinthepastfewyearsovertheyearsinthelastfewyears练习一下Manyproblems___________________(find)withournewcomputeroverthelastfewyears.Someprojectsforthecompany___________________(develop)bynow.havebeenfoundhavebeendeveloped现在完成时被动语态一般过去时被动语态过去过去有影响无影响动作发生现在完成时被动语态一般过去时被动语态对现在__4Readthepoem.Thenthinkofyourownsituationandwriteasimilarpoem.Lookat_________________________________Lookat_________________________________Lookat_________________________________You’dbetter_____________________________Lookat________________________________