Unit3TheInternetDiscoveringUsefulStructures课件-高中英语人教版2

Unit3DiscoveringUsefulStructuresTalkaboutsomethingthathasbeendoneIhavefinishedmyhomework.Myhomeworkhasbeenfinished.Thepresentperfectpassivevoice现在完成时的被动语态语法感知1.TherearecountlessarticlestellingushowtheInternethasmadeourlivesmoreconvenient.2.ButtheInternethasdonemuchmoreforpeoplethansimplymakelfiemoreconvenient.3.MuchhasbeenwriteenaboutthewondersoftheWorldWideWeb.4.People'sliveshavebeenchangedbyonlinecommunitiesandsocialnetworks.此两句中的时态是：现在完成时态此两句中的时态是：现在完成时的被动语态Readthepairsofsentences.Analyseandcomparethedifferentverbforms.Howdoweformthepresentperfectpassivevoice?Fillintheblank.VerbformActive（主动）have/has+donePassive（被动）____________________have/has+been+doneAllpossibleanswershavebeenconsidered!Myquestionhasnotbeenanswered.Hashisbikebeenrepaired?Why

hashebeenpraisedbyhisteacher?句型结构：现在完成时被动语态常用结构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…?

陈述句：Theauthor’snewstoryhasbeenpublished.否定句：Theauthor’snewstoryhasnotbeenpublished.

一般疑问句：Hastheauthor'snewstorybeenpublished?

特殊疑问句：Whenhastheautohr'snewstorybeenpublished?结构Theletter

(post)already.hasbeenpostedManyhouses

(build)forthepoorsofar.havebeenbuilt用法1:被动动作发生在过去,已经完成,对现在造成影响

或产生结果。(already,yet,sofar,bynow等)现在完成时的被动语态含义用法present(now)futurepast

PresentPerfectTense

现在完成时图解现在完成时态Themachine

(repair)fortwohoursbutitstilldoesn’twork.hasbeenrepairedPapermoney

(use)forover50years.hasbeenused用法2:被动动作发生在过去,持续到现在。(for+一段时间;since)含义用法

常与现在完成时连用的时间标志词

already

已经(肯定句)

foralongtime

很长一段时间recently/lately

最近

sofar

迄今为止by/upto/untilnow

到现在为止

inrecentyears

在最近几年里

since...

从...起

eversince

自那以来in/during/overthepast/lastyears在过去的几年里Tensemarkers时态标志词1.Themachinehasbeenrepairedalready.(repair)2.Themachineisbeingrepairednow.

3.Themachinewasrepairedyesterday.说明动作发生在过去,对现在有影响,“现在修好了”说明动作正在进行只说明动作发生在过去，对现在无影响4.Thebabyhasbeentakengoodcareof.4.Thebabyhasbeentakengoodcare.Attention:在被动结构中,动词短语的介词或副词不可去掉5.Greatchangeshavebeentakenplacesince1978.5.Greatchangeshavetakenplacesince1978.Attention:不及物动词或词组无被动难点突破hasbeensentwasbuilthavebeenbought巩固练习Summary课堂小结现在完成时的被动语态含义结构①表示过去发生的被动动作现在已经完成,强调对现在的影响；②被动动作发生在过去,持续到现在。have/hasbeendone形式肯定式否定式疑问式have/hasbeendonehave/hasnotbeendoneHave/Has+主语+beendone?特殊疑问词+have/has+主语+beendone?注意事项区分现在完成时/一般过去时的被动不及物动词或词组无被动Changethesentencesintothepresentperfectpassivevoice.译:把句子转换成现在完成时的被动语态

They’vebuiltakindofnewPCwithmorefunctions.AkindofnewPChasbeenbuiltwithmorefunctions.↓PracticeIhavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Someonehaslostanidentitycard.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.HaveyouconfirmedtheWi-Fipassword?HastheWi-Fipasswordbeenconfirmed?II.当堂检测

Greatchanges1.__________(take)placeinmyhometowninthepastfewdecades.

Thepublicfacilities(设施)2._________________(improve)sofar.Many

3.______(road)havebeenwiden.Besides,

Moreattentionhasbeengiventothe4._____________(environment)protection,somanytreesandflowers5._______________(plant)now.Thewaterintheriversaswellastheair6.___________(become)cleanagain.7._____manypeoplesay,

8.___

seemsthatwearenowlivingina“bigpark”.9._________,thingscangetbadifwedon’tappreciate10.______wehavenow.havetakenhavebeenimpro