現(xiàn)在完成時與過去完成時課件

基本時態(tài)構(gòu)成時態(tài)語態(tài)主動被動1一般現(xiàn)在時V/do/doesIs/am/aredone2現(xiàn)在進(jìn)行時BedoingIs/am/arebeingdone3現(xiàn)在完成時Have/hasdoneHave/hasbeendone4一般過去時VedWas/weredone5過去完成時HaddoneHadbeendone6過去進(jìn)行時Was/weredoingWas/werebeingdone7一般將來時Will/shalldoWill/shallbedone基本時態(tài)構(gòu)成時態(tài)語態(tài)主動被動1一般現(xiàn)在時V/do/doesI1ThePastPerfectTense過去完成時態(tài)ThePastPerfectTense過去完成21.現(xiàn)在完成時態(tài)表示過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果

Ourteacherhasleft.WehavestudiedEnglish.Ihavealreadyfinishedthehomework.Hehashadhislunch.Hehasbecomeadoctor.have/has+過去分詞1.現(xiàn)在完成時態(tài)表示過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果ha32.某個動作從過去已經(jīng)開始,一直持續(xù)到現(xiàn)在,還有可能持續(xù)到將來.動作的持續(xù)性要通過一段時間來表示.一段時間的表達(dá)方法有兩種:for:+一段時間forayearfortwoweeksforthreeyearsSince過去的某一時刻,sinceninesincelastweek

一般過去時態(tài)的時間狀語從句

sinceyoucamesinceyougothome.注意:for和since所引導(dǎo)的時間狀語都表示一段時間.Hehasbeenawaysincelastweek.Hehasbeenawayforoneweek.對劃線部分提問都用Howlong2.某個動作從過去已經(jīng)開始,一直持續(xù)到現(xiàn)在,還有可能持續(xù)到將4現(xiàn)在完成時：助動詞have/has+過去分詞過去完成時：助動詞had+過去分詞

構(gòu)成？現(xiàn)在完成時：助動詞have/has+過去分詞過去完成5

我認(rèn)識他三年了。

Ihaveknownhimfor threeyears.

IhadknownhimwhenI wasastudent.我當(dāng)學(xué)生時，就已經(jīng)認(rèn)識他了。hadknown

haveknown

was 我認(rèn)識他三年了。 Ihaveknownhimfo6

我已經(jīng)做完作業(yè)了。

表示在說話時已經(jīng)做完。Ihavefinishedmyhome-work. 我已經(jīng)做完作業(yè)了。 表示在說話時已經(jīng)做完。Ihave7

在六點以前，我就已經(jīng)完 成作業(yè)了。Bysixo’clock,Ihadfinishedmyhomework.

表示在過去的某一段時間（sixo’clock以前）已經(jīng)做完作業(yè)，與現(xiàn)在無關(guān)。 在六點以前，我就已經(jīng)完 成作業(yè)了。Bysixo’cl8

他們已經(jīng)吃過早飯了。

在他們到旅館之前他們已 經(jīng)吃過早飯了。Theyhavealreadyhadbreakfast.Theyhadalreadyhadbreakfastbeforetheyarrivedatthehotel. 他們已經(jīng)吃過早飯了。 在他們到旅館之前他們已 經(jīng)吃過9

我從未看過如此令人興奮 的比賽

他說他從未看過如此令人 興奮的比賽。Ihaveneverseensuchanexcitingmatchbefore!Hesaidthathehadneverseensuchanexcitingmatchbefore! 我從未看過如此令人興奮 的比賽 他說他從未看過如此令人10過去完成時與現(xiàn)在完成時二者用法基本相同，但現(xiàn)在完成時以現(xiàn)在時間為基點，過去完成時則以過去的時間為基點，與現(xiàn)在無關(guān)，即過去的過去。過去完成時常用于賓語從句中;

Summary過去完成時與現(xiàn)在完成時二者用法基本相同，但現(xiàn)在完成時以現(xiàn)在時11結(jié)構(gòu)：助動詞had+p.p.(過去分詞)用法：表示過去某一時間和動作之前已經(jīng)發(fā)生或完成了的動作或一直持續(xù)的動作(過去的過去)。

Bytheendoflastterm,wehadlearned600Englishwords.Hesaidhehadfinishedhishomework.Thefilmhadalreadybegunwhenwegottothecinema.IhadstudiedEnglishbeforeIcamehere.WhenIcametoGZ,hehadbeenthereforalongtime.結(jié)構(gòu)：助動詞had+p.p.(過去分詞)用法：表示過去12過去完成時態(tài)的標(biāo)志：和by+過去時間點連用,如：

bythetime,bythen,bylastyear,bytheendoflastyear/month…,byfiveo’clockyesterdayevening…Bytheendoflastterm,they____________(learn)10Englishwords.2.和before+過去時間點連用We____________(arrive)thestationbeforeteno’clock.hadarrived3.常用于賓語從句中Shesaidthatshe______________(write)threee-mails.hadwritten過去完成時態(tài)的標(biāo)志：和by+過去時間點連用,如：134.和when,before,after,assoonas,until/till等引導(dǎo)的狀語從句連用或用于從句中

Theairplane_______already_______(leave)whenIgottotheairport.5.根據(jù)上下文判斷

IwenttoLiHong’shouse,buthe____________(go)out.hadlefthadgoneLastnight,assoonasI_______________

(finish)mywork,Iwenttosleep.hadfinished4.和when,before,after,asso14Fillineachblankwiththeproperverbform:Hesaidthathe___________(write)thatletter.Beforehearrived,thetrain__________(leave).Bythen,they____________(work)foreighthours.Whenshegottothecinema,thefilm____already____(be)onfor15minutes.Marytoldmeshe___________(meet)mymotherbefore.Bysixo’clockyesterdayevening,I____________(finish)myhomework.IwenttoLiHong’shouse,buthe____________(go)out.We__________(arrive)atthestationbeforetwoo’clock.hadwrittenhadlefthadworkedhadbeenhadmethadfinishedhadgonehadarrivedFillineachblankwiththepr151.Afterhe______________(finish)hiswork,hewentout.finished2.Annietoldmethathisfather____________(go)toParisandhe____________(come)backinafewdays.hadgonewouldcome3.Myfriend__________(buy)thecartwoyearsago.He_____________(have)itfortwoyears.boughthashadFillineachblankwiththeproperverbform:4.Beforetheyarrivedhere,thefilm_________already___________(start).hadstarted1.Afterhe______________(fi16Fillineachblankwiththeproperverbform:A:________you___________(finish)yourhomework?B:Yes,Ihave.A:Whathadyoudonebeforeyoufinishedyourhomework?B:I_____________(watch)TV.A:What______you_______(do)now?B:I_____________(write)alettertomyfriendTom.A:_____youoften________(write)tohim?B:Yes.Andheoften________(write)tome.I_______(get)aletterfromhimyesterday.SoI____________(answer)hisletternow.A:When________you________(post)it?B:I_________(post)itassoonasI________(finish)writing.HavefinishedhadwatchedaredoingamwritingDowritewriteswillpostgotamansweringwillpostfinishFillineachblankwiththepr171.過去完成時態(tài)的肯定式，否定式，疑問式和簡短回答：Ihadhadmybreakfastbeforesixo’clockthismorning.Ihadn’thadmyhomeworkbeforesixo’clockthismorning

Hadyouhadyourbreakfastbeforesixo’clockthis…?Yes,Ihad.No,Ihadn’t.Shehadleftwhengotthere.Shehadn’tleftwhenIgotthere.Hadsheleftwhenyou