Unit 3 Food and Culture Discover Useful Structures 课件-2024-2025学年高中英语人教版（2019）选择性必修第二册

DiscoverUsefulStructure:

过去完成时态及过去完成时的被动语态FoodandCultureUnit3LearningobjectivesBytheendofthisclass,youwillbeableto:1.recognizeandsummarizethemeaning,formanduseofthepastperfecttenseandthepastperfectpassivevoice;2.usethepastperfecttenseandthepastperfectpassivevoicetodescribeasituationthathappenedinthepast.1.HongKong___________(return)toChinain1997.returned2.Macao___________(return)toChinain1999.returned3.HongKong_________________(return)toChinabeforeMacaocameback.hadreturned过去完成时

pastperfecttenseLeadin一、什么是过去完成时？表示过去某一时间或动作之前发生的动作或状态，以及对过去的某一点造成的某种影响或是结果。动作发生在“过去的过去”。eg：1.Bynineo'clocklastnight,wehadgot

200picturesfromthespaceship.2.Allthetickets

hadbeensoldout

whentheyarrived.表示在过去某一时间或事件之前已经完成的动作或已经存在的状态一、过去完成时的定义PastFuturePresent“过去的过去”haddone过去完成时的基本结构和语态

主动语态被动语态肯定形式haddonehadbeendone否定形式hadnotdonehadnotbeendone一般疑问句had＋主语＋donehad＋主语＋beendone特殊疑问句疑问词＋had＋主语＋done疑问词＋had＋主语＋beendone(1)表示在过去某一时间或动作以前完成了的动作,即“过去的过去”。可以用by,before等介词短语或一个时间状语从句来表示。before(连词/介词)+

过去的时间点“在...之前”by+过去的时间点“到...为止”bytheendof+过去的时间点“到...为止”bythetime+(一般过去时)“到...为止”Usageofpastperfecttense1.IhadintendedtovisithimyesterdaybutIwasn’tabletomakeit.2.Hehadwishedtobecomeadoctor,buthestudiedlawatcollege.3.Theyhadwantedtohelpbutcouldnotgetthereintime.2、用于think，want，hope，wish，plan，intend等动词表示过去未曾实现的想法、希望、打算或意图等。1.ItwasthefirsttimethatIhadmadesuchamistake.2.Itwastwoyearssincehehadlefthishometown.3、用于固定句型

It/This/Thatwas+the序数词+time+that从句；Itwas+一段时间+since从句。1.Scarcelyhadhearrivedwhenhewentawayagain.2.NosoonerhadIwalkedoutthanIrememberedthatIforgotmybag.3.Hardlyhadwesatdowntosupperwhenthephonerang./4、用于固定句型：（刚……就……）

Hardly/Scarcely...when；Nosooner...than注意：否定词置于句首，需要_______________________。

主句用_______________，从句用_______________。部分倒装过去完成时一般过去时1.I___________

(eat)lotsofcakessofar.2.I_________(eat)lotsofcakestillthen.3.Tom____________

(finish)writinghisnovelbytheendoflastyear.4.Tom____________

(finish)writinghisnovel.

5.Tom________________

(finish)writinghisnovelbytheendofnextyear.6.Tom_________(finish)writinghisnovellastyear.haveeatenhadeatenhadfinishedhasfinishedwillhavefinishedfinished即学即练7.Ithoughtthattheletter___________________(send)aweekbefore.had

been

sent8.Shedidn'tgobackhomeuntilthework_______________________(finish).had

been

finished9.Hardly______hebeguntospeakwhentheaudienceinterruptedhim.had10.Robert________________(want)toattendPeter'sbirthdayparty,butanunexpectedvisitorruinedhisplan.had

wanted1.Tom

haseaten

hissupper.2.Tomhadeatenhissupperinthecanteenbeforehewentbackhome.1.Thefamilyhavenotfinishedbreakfast.2.Thefamilywerestillattable,buttheyhadfinished

breakfast.现在完成时强调过去的动作对现在的影响；过去完成时强调动作或状态开始于过去，也结束于过去。Trytocomparethefollowingtwosetsofsentences.过去完成时的被动语态是过去完成时态和被动语态的结合。表示过去某一时间以前已经被完成的动作，常与by，before等引导的时间状语连用。由“had＋been＋过去分词”构成。过去完成时的被动语态有以下几种形式：(1)肯定结构：主语＋hadbeendone＋其他成分。(2)否定结构：主语＋hadnotbeendone＋其他成分。(3)疑问句结构：had＋主语＋beendone＋其他成分？疑问词＋had＋主语＋beendone＋其他成分？过去完成时的被动语态一、什么是过去完成时的被动语态？表示过去某一时间或某一动作前已发生且已完成的动作或状态。主语与谓语动词之间存在被动关系如：Thework

hadbeenfinished

byusbynineo’clockyesterday.Gracerealizedamistake

hadbeenmade

byher.Theproject

hadbeencompleted

bytheendof1999.过去完成时的被动语态用法过去完成时被动语态与现在完成时被动语态用法区别：现在完成时被动语态表示相对于现在来说已被完成的动作，过去完成时被动语态表示相对于过去某一时刻来说已被完成的动作。Summarypastperfecttensemeaningformuse“过去的过去”过去完成时表示过去某个时间之前已经发生的动作或一直延续的动作或状态。主动:haddone被动:hadbeendone用法一：

用于有时间状语before/by(theendof)+过去时间时用法二：用于think，want，hope，wish，plan，intend等动词表示过去未曾实现的想法、希望、打算或意图等用法三：用于固定句型

It/This/Thatwas+the序数词+time+that从句；Itwas+一段时间+since从句用法四：用于固定句型：（刚……就……）

Hardly/Scarcely...when；Nosooner...than注意：否定词置于句首，需要部分倒装。

主句用过去完成时，从句用一般过去时。语法填空1.Whenthepolicearrived,thethieves__________(run)away.2.Thetroopswenttotheforestinsearchofthepilotwho__________(survive)theaircrash.3.We__________(paint)thehousebeforewemovedin.4.BythetimeAmyreturnedhomefromEngland,herdaughter_______________(graduate)fromcollege.5.Shesaid(that)she__________never__________(be)toParis.6.Ourplanfailedbecausewe__________(make)abadmistake.7.Amysaysshe__________(read)thebooktwice.8.Allthetickets_______________(sell)outwhentheyarrived.hadrunhadsurvivedhadpaintedhadgraduatedhadbeenhadmadehadmadehadbeensold语法填空9.I__________(plan)tohelpyou,butIwastoobusy.10.---DidyouvisittheDisneylandofShanghai?---I_____________(intend)to,butIdecidedtostaywithmysickmotheratthelastminute.11.Itwasthefirsttimethatshe________________(operate)asewingmachine.12.ThiswasthefirsttimethatI__________(meet)suchdifficultproblems.13.Nosooner__________thefilmstar__________(arrive)attheairportthanheattractedpeople'sattention.14.IwouldratherthatI__________(junk)thebadeggs.hadplannedhadintendedhadoperatedhadmethadarrivedhadjunked完成句子1.She_________________________(刚到家)whenitrained.2.They___________________________(相爱5年)beforetheygotmarried.3.Theyhadstudiedthemapofthecountrybeforethey_________________________(动身前往).4.BythetimeIgottothestation,thetrain_________________________(已经走了).5.DuringhisstayinXi'an,Jerrytriedalmostalltheloca