Unit3TheInternetDiscoveringUsefulStructures课件-高中英语人教版

Unit3DiscoveringUsefulStructurePresentPerfectPassiveVoice完成时时态现在完成时：have/hasdone1.过去的动作一直持续到现在IhavelivedinChinafor5years.我在中国住了5年。（从5年前到现在，现在还在中国）2.过去的动作对现在产生影响Someone

hasbroken

thewindow.(窗户现在是坏的)Ihavealreadylost

thekey.(我现在没有钥匙)I

haven'tread

thebookyet.(不了解书的内容)现在完成时主动：

被动：1)动作或状态从过去开始,一直持续到现在,常与下列时间状语连用:sofar,uptonow,uptillnow,bynow,recently,lately,inrecentyears;(ever)since+一般过去时,in/during/overthepast/last...years/months/days/weeks,overtheyears1.Hisfirstnovelhasreceivedgoodreviewssinceitcameoutlastmonth.2)动作或状态发生在过去,但对现在有影响或结果2.Igotcaughtintherainandmysuithasbeendamaged.

have/hasdone

have/hasbeendone

现在完成时主动：

被动：3)固定句型:It/This/Thatisthefirst(second,third…)timethat…+现在完成时，表示“第几次做某事”3.Thisisthefirsttimewehaveseenafilminthecinematogetherasafamily.

have/hasdone

have/hasbeendone

Whatispresentperfecttense?present(now)futurepast现在完成时

have/hasdone（过去分词）表示说话时已经完成的动作，而且这个动作的结果对现在仍有影响;表示动作发生在过去，但一直持续到现在，并且有可能继续持续下去。练习1.Everymeans______(try)toprotectpandasoverthepast10years.2.Manykindsofapps______(create)toattractyoungpeopletoplaygamessofar.3.Manywords_____(add)tothelanguagesinceitwaspublished.

hasbeentriedhavebeencreatedhavebeenadded肯定式：have/hasbeendone...否定式：have/hasnotbeendone...一般问句：Have/Has+主语+beendone特殊疑问句：疑问词+have/has+主语+beendone现在完成被动语态的基本结构Thesingerhasbeeninvited(byTom).Thesingerhasnotbeeninvited(byTom).Hasthesingerbeeninvited(byTom)?Whohasbeeninvited(byTom)?

否定一般疑问对宾语提问过去完成时主动：

被动：1)过去的过去。常与过去完成时连用的时间状语有by/before+一般过去时BythetimeJackreturnedfromhomefromEngland,hissonhadgraduatedfromcollege.2)固定句型:It/Thiswasthefirst/second/third...timethatsb.haddonesth..到过去某一时间某人第几次做某事Itwasthefirsttimethathehadlefthisnativeland.haddone

hadbeendone

练习1.The

youngman,whenquestionedwhyhe_______(break)thelaw,justlookedatthepolicemanandsaidnothing.2.Nosooner________

MoYan________

(step)onthestagethantheaudiencebrokeintothunderousapplause.3.—DidyouhavedifficultyfindingAnn'shouse?—Notreally.She________(give)uscleardirectionsandwewereabletofinditeasily.4.Itisthefirsttimehe________(visit)thiscity.5.I_________(intend)tocallyou,butwaspreventedfromsomethingunexpected.练习6.Hardlyhadhebeguntospeakwhentheaudience________(interrupt)him7.ThoughI________(explain)thetextthreetimes,theboystillcouldn’tunderstandit.8.Iamsoupsetthatthehousewe_______(live)inforsomanyyearswasconsumedbythefire.9.Thecoffeeiswonderful!It

doesn’ttastelikeanythingI________(have)before.10.Ijumpedwithjoythemoment

I__________(receive)mydriver’slicense.练习【答案】1.hadbroken;2.hadstepped;3.hadgiven;4.hasvisited;5.hadintended;6.interrupted;7.hadexplained;8.hadlived;9.havehad;10.receivedYouhaveslainanenemy.Yourteamhasdestroyedtheturret.slay–slew-slainhave/hasdonehave/hasbeendoneAnallyhasbeenslain.Anenemyhasbeenslain.Youhavebeenslain.Yourturrethasbeendestroyed.现在完成时现在完成时的被动语态防御塔

杀死敌人盟友slay-slain-slain思考：什么时候用被动语态?

语态用来表示主语与谓语之间的关系，它是动词的一种形式。英语中有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态表示主语是动作的承受者。不知道动作的执行者没有必要指出动作的执行者强调动作的承受者Presentperfectpassivevoice1.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.2.People’sliveshavebeenchangedbyonlinecommunitiesandsocial

networks.3.Manypeoplehavebeenhelpedbytheclub.4.Jan’slifehasbeengreatlyimprovedbytheInternet.5.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.6.HastheWi-Fipasswordbeenconfirmed?

7.Hasthebuttonbeenpressedyettocopythefile?8.Anidentitycardhasbeenlost.思考：现在完成时的被动语态有什么意义？Presentperfectpassivevoice主语和谓语是被动的关系：

表示动作从过去一直持续到现在，有可能还会继续进行

动作已经完成，强调对现在造成的影响或结果例句现在完成时被动语态句式Theresearchhasbeendonesuccessfully.Theauthor’snewstoryhasnotbeenpublished.Has

hiswashingmachinebeenrepaired?

Whohasbeeninvited?肯定式：have/hasbeendone否定式：have/hasnotbeendone一般疑问句：把have/has提到主语的前面

特殊疑问句：特殊疑问词+have/hasbeendonePresentperfectpassivevoice“三变”例：Theyhavesolvedtheproblem.原句主语(by+sb)宾语主语

谓语由主动被动“三不变”原句意思不变原句时态不变原句主谓宾以外成分不变Theproblem________________________bythem.hasbeensolved被动语态Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Someonehaslostanidentitycard.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.Changethesentencesintothepresentperfectpassivevoice.HaveyouconfirmedtheWi-Fipassword?Haveyoupressedthebuttonyettocopythefile?Hasanyonemadeacommentabouttheonlinedatabase?HastheWi-Fipasswordbeenconfirmed?Hasthebuttonbeenpressedyettocopythefile?Hasa/anycommentbeenmadeabouttheonlinedatabase?Theworld__________________________(turnupsidedown)sincetheinventionoftheInternetandtheintroductionofpersonalcomputersintonearlyeveryhome.ThetwininventionsofthepersonalcomputerandtheInternet___________________(consider)tobeamongthetwomostimportanteventsofthelastcentury.Theinternetisbringinggreatchangestomodernlife.Completethetextwiththecorrectformsof