Unit4 Adversity and Courage Discovering Useful Structures课件-【知识精研】人教版英语选择性必修第三册

DiscoverUsefulStructures

Unit4AdversityandCourage现在完成进行时结构

常用的时间状语12现在完成进行时VS.现在完成时34用法Observeanddiscover：1.ThisistheadventurethatIhavebeendreamingof.2.Wearenowcampedonthericeandwehavebeenmanagingtosurvive...3.Thedoghasbeenbarkingforabouttwohours.Ireallyhopeitwillstopsoon.1.观察以上例句，归纳出现在完成进行时的结构：

。2.写出现在完成进行时的不同句型：

肯定句否定句一般疑问句特殊疑问句have/has+been+doing

主语+have/hasbeen+doing...

主语+have/hasnotbeen+doing...Have/Has+主语+been+doing...?疑问词+have/has+主语+been+doing...?一、现在完成进行时的结构IhavebeenlearningEnglishsinceIwas8yearsoldandIstillloveit.learn

8yearsagofuturenow

1.

过去动作持续到现在，还将持续下去。二、现在完成进行时的用法learnlearnGosh,isanybodyinit?Ihavebeenknockingatthedoorforhalfanhour!Gosh,isanybodyinit?Ihavebeenknockingatthedoorforhalfanhour!pastfuturenowknockknockknock2.

表示动作从过去到现在的时间内重复发生但有可能间断。1.---IamsorryIhavekeptyouwaitingsolong.---Itisallright.Ihavebeenreadingthenewspapers.2.Wehavebeenwaitingforyouforhalfanhour.

3.

表示说话之前刚刚结束的动作，并且动作不再继续。二、现在完成进行时的用法pastnowwaitingstartedarrivefutureOh,youhavecomeatlast!Ihavebeenwaitingforyoufortwohours.Hereyouare!Sorry.I'mlate.Oh,youhavecomeatlast!Ihavebeenwaitingforyoufortwohours.Hereyouare!Sorry.i'mlate.pastfuturenowwait4.表示某种强烈的感情色彩,如：赞赏、不满、批评、愤怒等。Look&discover:①Aprivatedetectivehasbeentailing(跟踪)himforseveralweeks.②Tomlovesoutdooractivities-hehasbeenfishingandhunting

sincehewasachild.三、常用的时间状语现在完成进行时常与以下表示

“持续”

的时间状语连用：for+时间段,since+过去时间/句子（时态用过去时）

（与since或for连用时，动作常会继续下去）

thisweek,thismonth,thesedays...allday,allthemorning,allthetime,allthisweek...recently,lately,uptonow,tillnow,sofar,during...over/inthepast/lastfewyears,fromthestart...Theboy__________________(eat)sincefiveminutesago.

hasbeeneating(1)Theboystartedeatingfiveminutesago.(2)Heisstilleatingnow.Practice完成课本P41②1.Thedogstartedtobarkabouttwohoursago.Ireallyhopeitwillstopsoon.

Thedoghasbeenbarkingforabouttwohours.Ireallyhopeitwillstopsoon.2.Stevestartedtoplayrugbyattheageofeight.Nowhehasbecomeaprofessionalplayer.

Stevehasbeenplayingrugbysinceeightyearsold.Nowhehasbecomeaprofessionalplayer.Readeachsituationandrewriteeachsentenceusingthepresentperfectcontinuoustense.（课本P41②）3.Timmyisholdingatabletennisbatandhisshorthairisdampwithsweat.Helooksalittletiredafterplayingtabletennisfortwohours.4.Dianehasn’tgotmuchsleepthisweek.Shelooksterribletoday.5.Itriedtophoneyouthismorning.ImusthavetriedadozentimesbeforeIcaughtyouhere.Timmyisholdingatabletennisbatandhisshorthairisdampwithsweat.Hehasbeenplayingtennisfortwohoursandlooksalittletired.Dianehasn’tbeensleepingwellthisweek.Shelooksterribletoday.

Ihavebeentryingtophoneyouthismorning.ImusthavetriedadozentimesbeforeIcaughtyouhere..四、现在完成进行时VS.现在完成时【相同点】1.动作都发生在过去；2.都与一段时间连用。Ihavebeenteachingfortwoyears.Ihavetaughtfortwoyears.Differences现在完成时VS.现在完成进行时

pastfuturenowdiddohavedone

pastfuturenowdiddohavebeendoingdo现在完成时现在完成进行时Compareandfind现在完成时VS.现在完成进行时Hehaswrittenanovel,whichisbeingpreparedtocomeoutnow.Hehasbeenwritinganovel,whichwillbefinishednextmonth.时态

现在完成时强调完成和结果/影响现在完成进行时强调未完成和动作Compareandfind现在完成时VS.现在完成进行时Juliahasgonetothelibrary.Juliahasbeengoingtothelibraryforayear.时态

现在完成时强调完成和结果/影响经常表单个事件现在完成进行时强调未完成和动作可表重复事件Compareandfind现在完成时VS.现在完成进行时Therepairmanhasrepairedyourcar,andyoucanhaveitnow.Therepairmanhasbeenrepairingthecaralltheafternoon.时态

现在完成时强调完成和结果/影响经常表单个事件通常只陈述事实现在完成进行时强调未完成和动作可表重复事件含感情色彩Compareandfind现在完成时VS.现在完成进行时Ihavevisitedmyhometownrecently,whosechangeshaveleftadeepimpressiononme.Ihavebeenvisitingmyhometownrecently,anditimpressesmedifferentlyeachtime.时态

表重复时现在完成时强调完成和结果/影响经常表单个事件通常只陈述事实强调成果，讲次数现在完成进行时强调未完成和动作可表重复事件含感情色彩强调持续，不讲次数

1.Forthewholemorning,theboardofdirectors______________________(discuss)theresolutiontoincreasewagesinthecomingyear.2.Jason’sonlyrecreationispainting.He___________________(learn)howtopaintforoverfiveyears.3.Eventhoughwelostthegames,weshouldbeproudofourselvesbecausewe_______________(try)ourbestand__________(work)asateam.4.Hefinally______________(finish)theresearchpaperunderhistutor’sguidance.5.MynephewSam____________________(collect)comicbookssincehewasfive.Nowhehasmorethantwohundredofthem.6.Thecompany_______________________________(launch)anadvertisingcampaigntopromoteitscorporateimage.ha