Unit3 Discovering Useful Structures课件-高中英语人教版（2019）必修第二册

U3.Structures互联网极大地改变了Jan的生活。(强调完成)TheinternethasgreatlychangedJan’slife。Jan的生活极大地被互联网改变了。(强调事实)Jan’slifeisgreatlyimprovedbytheInternet.Jan的生活极大地被互联网改变了。(强调已完成且对现在有影响)Jan’slifehasbeengreatlyimprovedbytheInternet.Translate人们写了很多关于互联网的文章。(强调完成)PeoplehavewrittenmanyarticlesabouttheInternet很多互联网的文章被人们书写了。(强调事实)ManyarticlesabouttheInternetarewrittenbypeople很多互联网的文章被人们书写了。(强调已完成且对现在有影响)ManyarticlesabouttheInternethavebeenwritten.Translate互联网极大地改变了Jan的生活。(强调完成)TheinternethasgreatlychangedJan’slife。Jan的生活极大地被互联网改变了。(强调事实)Jan’slifeisgreatlyimprovedbytheInternet.Jan的生活极大地被互联网改变了。(强调已完成且对现在有影响)Jan’slifehasbeengreatlyimprovedbytheInternet.Structurehave+V-ed.be+V-ed.have+V-ed.be+V-ed.have+been+V-ed+=现在完成时被动态

PresentPerfectPassiveVoice：

have+V-ed.be+V-ed.[have+been+V-ed]VerbformActivePassivehave/has+been+v-edHowdoweformthepresentperfectpassivevoice?Fillintheblank.have/has+v-edFormsof

[havebeen+V-ed]Thechildrenhave

alreadybeentoldthegoodnews.Thechildrenhaven’tbeentoldthegoodnewsyet.Havethechildrenalreadybeentoldthegoodnewsyet?Whohasbeentoldthegoodnews.否定句疑问句对thechildren提问1)表过去开始的被动动作一直持续到现在，常连用的时间状语有：for+段时间，since+时间状语(从句)，thesedays,sofar,uptonow,inthelast/pastfewyears等。如：ThisclasshavebeentaughtbyMr.Brownfortwoyears.HisChinesehasbeenimprovedalotsincehecametoChina.Rowling’snovelshavebeentranslatedintomanyforeignlanguagessofar.现在完成时的被动语态有两种情况：2)表某被动动作对现在造成的影响或结果，常与already,yet,just,ever,never,recently等连用。如：Thebikehasnotbeenrepairedyet.IhavealreadybeenintroducedtoMr.Smith.

注意：有些动词没有被动语态,如不及物动词happen,takeplace,breakout等。Thestoryhappenedin1990.*Thestorywashappenedin1990.*Thestoryhasbeenhappenedin1990.Changethesentencesintothepresentperfectpassivevoice.(P.30)They’vebuiltakindofnewPCwithmorefunctions.AkindofnewPChasbeenbuiltwithmorefunctions.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.3.HaveyouconfirmedtheWi-Fipassword?Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.HastheWi-Fipasswordbeenconfirmed?4.Haveyoupressedthebuttonyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Hasthebuttonbeenpressedyettocopythefile?Hasa/anycommentbeenmadeabouttheonlinedatabase?thebuildings,destroy,earthquakeThebuildingshavebeendestroyedbytheearthquake.Lookatthepictures,listsomekeywords,thenmakeupsentencesusingthepresentperfectpassivevoice.inourcity,anewbridge,buildAnewbridgehasbeenbuiltinourcity.recently,manytrees,plant,alongtheroadManytreeshavebeenplantedalongtheroadrecently.machinereplacecomputerThemachinehasbeenreplacedbythecomputer.sevenHarryPorterbooks,J.K.Rowling,sofar,writeSevenHarryPorterbookshavebeenwrittenbyJ.K.Rowlingsofar.has;beenupdatedhavebeenvisitedhasnotbeenusedhasbeendonehavebeeninspiredhavebeenpostedhavebeencausedhasbeendeletedTaskIonPage74havebeengivenhasbeenmadehasbeensupportedhasbeenprovidedhavebeentaughthavebeenhelpedhasbeensetupTaskIVonPage74I.单句语法填空1.Computers____________(use)inofficesandhomessince1970s.2.Inmyhometown,thereisalwaysaharvestsupperforthefarmerafterallthewheat______________(cut).8.Someefforts_______________(make)toimprovetheairqualityinthecitylastwinter.12