八年级英语下册 现在完成时完整 人教新目标版ppt课件

PresentPerfectTense,一、什么叫现在完成时,1.IhavejustlentmybooktoJohn.(Idonthavethebooknow.),现在完成时表示动作发生在过去，但和现在情况有关，既用一个发生在过去的动作来说明现在的情况。,2.Myunclehaslivedinthatstreetsincehecametothiscity.(Hebegantolivetheremanyyearsago,helivestherenowandhewillgoonlivingthere.),二、现在完成时的构成,1.Jackhasgonetothecinema.,2.Theyhavefinishedtheirhomework.,助动词have/has过去分词,Jackhasntgonetothecinema.,HasJackgonetothecinema?Yes,hehas./No,hehasnt.,Havetheyfinishedtheirhomework?Yes,theyhave./No,theyhavent.,Theyhaventfinishedtheirhomework.,现在完成时用法（一）,过去的(结束性)动作产生的影响或结果现在还存在。,常用短暂性动词做谓语动词.如arrive,get,finish,borrow,open,stop,begin,go,come,die,fall,时间状语常用already,just,yet,ever,before,once(一次),recently等不具体的过去时间或不带有时间状语,三、现在完成时的用法,1.表示过去发生或已经完成的某一动作对现在造成的影响或结果。,-Haveyouhadyourlunchyet?-Yes,Ihave.Ihavejusthadit.(现在不饿了。),Ihavealreadypostedthephotos.(照片已不再我这里了),MarywithhisfamilyhasneverbeentoChinabefore.,-Havetheyeverheardofthestory?-No,notyet.,Adverbsoftime,before,bynow(sofar),到目前为止once,twice,just,recentlyyet(否/疑),already(肯),ever,never,曾经，从不,Exercises:,一、按要求变化下列各句。1.Shehaslistenedtoapieceofforeignmusic.（否定句）2.Ihavegotsomethingimportanttodo.（一般疑问句）3.Haveyouevertraveledonatrain?（否定回答）,Shehasntlistenedtoapieceofforeignmusic.,Haveyougotanythingimportanttodo.,Hehasalreadyfinishedastorybook.,4.Hefinishedreadingastory-book.（改成现在完成时）5.LiLeihaseatensomedumplingsforhisbreakfast.（对划线问）6.Iveworkedoutthemathsproblem.（对划线部分提问）,Whohasworkedoutthemathsproblem?,WhathasLileieatenforhisbreakfast?,No,Ihavent.,二、用所给动词的适当形式填空。1.-Areyousureyou_(lose)thebook?-Yes.I_(look)foriteverywhere.ButIstill_(cannot)findit.2.-_you_(take)themedicineyet?-Yes,I_(take)ithalfanhourago.3.I_(never,meet)hersisterbefore.4.He_(just,watch)afootballgame.Heissotiredandhungrynow.5.-Howmanytimes_you_(read)thisbook?-I_(read)itseveraltimes.,havelost,havelooked,cant,Have,taken,took,havenevermet,hasjustwatched,have,read,haveread,6.Mybrother_(buy)acarlastmonth.7.-WhereisJoan?-She_(go)tothecinema.8.Youcanturnofftheradionow.I_(hear)thenewsalready.I_(hear)itat8oclock.9.Jack_(notfind)hiswatchyet.10.-_WeiFang_(come)yet?-Yes,she_(come)already.-When_she_(come)?-She_(come)justnow.,bought,hasgone,haveheard,heard,hasntfound,Hascome,hascome,didcome,came,1.都表示过去发生的事2.现在完成时强调过去和现在的联系，不能和具体的时间状语连用；3.一般过去时强调过去发生的事或状态与表示过去的具体时间连用（last,ago,yesterday,etc.）,present,past,Ihavelivedherefortwoyears,Ilivedthere2yearsago,eg.1.Hehadhisbreakfastat6:00Hehashadhisbreakfast.2.Whendidyoucomehere?IwatchedthefootballmatchonTVat9:00.,Exercises,1.I_(have)lunchalready.2.Hasthetrain_(arrive),yet?3.Tome_never_(beto)China.4.Thetwin_just_(see)myfather.5.Thetwins_(see)myfatherjustnow.6.Manytallbuildings_(build)inthepast5years.,havehad,arrived,has,beento,has,seen,saw,havebeenbuilt,用法二：for+段时间since+点时间since+句子（过去时）E.g.Katehaslivedherefor3years.Katehaslivedheresince3yearsago.KatehaslivedheresinceshecametoChina.,表示过去某个时间开始的动作或存在的状态，一直持续到现在并可能还将持续下去。动词使用延续性动词。常与for或since引导的时间连用,常见非延续性动词和延续性动词的转变,arrive/come/gotodiebecomeaborrowLeave/movebuyopenjoinstart/beginfinish/endcatchacoldgetupgettoknowgetoutclosewakeupgotosleepbecomeinterestedin,bein,bedead,have,keep,beaway/beout,bea,bein/amemberof,beopen,beon,beover,haveacold,beup,know,beout,beclosed,beawake,beasleep/sleep,beinterestedin,Exercises,Hisfatherhasdied.(for2years)Thefootballmatchhasbegun.(since9:00a.m)Thetwinshavejoinedthearmy.(sincetheyare18yearsold)MyteacherhasjustleftNanjing.(for3days),Hisfatherhasbeendeadfor2years.,Thefootballmatchhasbeenonsince9:00a.m.,Thetwinshavebeensoldiers/beeninthearmysincetheyare18yearsold.,MyteacherhasbeenawayfromNanjingfor3days,重点句型:Itis/hasbeen+段时间+since从句段时间+haspassed+since从句,eg.他死了两年了：Hediedtwoyearsago.Hehasbeendeadfortwoyears/sincetwoyearsagoItis/hasbeentwoyearssincehedied.Twoyearshaspassedsincehedied.,1.这本书我借了一个月了。,Iborrowedthisbookamonthago.,Itis/hasbeenamonthsinceIborrowedthebook.,Ihavekeptthebookforamonth./sinceamonthago.,AmonthhaspassedsinceIborrowedthebook.,Have/hasgonetohave/hasbeentohave/hasbeenin,have/hasgoneto:已经去了或在途中，还没有返回；have/hasbeento:曾今去过某地，现在已经回来了,后面可接表示“次数”的状语;have/hasbeenin:表示某人“已在某地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。,Exercises,Tom在哪儿？他去书店买书了。我在北京待了5年了。Jack去过上海两次了,-WhereisTom?-Hehasgonetothebookshoptobuysomebooks.,IhavebeeninBeijingfor5years.,JackhasbeentoShanghaitwice.,Correcting,1.Ihaveborrowedthebookfor3months.2.Mybotherhasjoinedthearmysincehewas18.3.JackandTomhavelivedheresince5years.4.ThefilmhasbeenonsinceIhavecometothecinema.5.WhenhasMr.Licaughtabadcold?,havekept,hasbeenin/beenamemberofthearmy,since5yearsago/for5years,came,did,catch,6.Tenyearshavepassedsincetheygotmarried.7.JimhasgonetoBeijingfor2years.8.Whattimehavethefactoryopened?9.IhavegonetoChunhuaMiddleSchooltwice,has,hasbeenin,did,open,beento,Exercises,IamanAmericanboyIcametoChinatwoyearsago.I_(study)herefortwoyears.Myfatheroften(take)me_(play)footballontheplayground.LastweekI_(take)totheparkbyhim.We