超好的unit-12-過去完成時講解ppt電子教案

超好的unit-12-過去完成時講解ppt我們先看它的形式：had+過去分詞，它表示的意義用五個字就可以概括。那到底什么叫做“過去的過去”，“我寫完了作業(yè)以后出去和朋友玩兒”，“寫完作業(yè)”和“出去玩”這兩個動作都看作是在過去發(fā)生的，但要注意“寫完作業(yè)”發(fā)生在前，“出去玩”發(fā)生在后，所以比較這兩個同為過去的動作，寫完作業(yè)就是“過去的過去”，所以我們要用過去完成時，而“出去玩”用過去時。AfterIfinishedthehomework,Iwentoutplayingwithmyfriends.”

“AfterIhadfinishedthehomework,Iwentoutplayingwithmyfriends.”找不同“過去的過去”所以我們說使用過去完成時有兩個大前提1>兩個動作均發(fā)生在過去2>先發(fā)生的動作（過去的過去）用過去完成時。兩個條件缺一不可。用數(shù)軸圖表示解題技巧五字一找一排序BythetimeI

got

outside,thebus

hadalreadyleft.thepolicemangettotheshopTomrunaway

Bythetimethepolicemangotto

theshop,Tomhadrunaway.Speaking--freely:Bythetime…orWhen…LiuMeiwakeup

theconcertbeover

Bythetime

LiuMeiwokeup,theconcerthadbeenover.

hisgrandmacomefromAmericaLiMinggrowup

BythetimehisgrandmacamefromAmerica,LiMinghadgrownup.20062016

learn4000Englishwords

Bytheendof……Bytheendof2006,Ihadlearned4000newwords.一、表現(xiàn)形式

1.基本形式：had+過去分詞。

2.否定形式：had+not+過去分詞(hadnot照樣可縮寫hadn't)。

3.一般疑問形式：had提到句首，回答用Yes,主語+had./No,主語+hadn't.例如：

—Hadhetoldyoutogothereearlieryesterday?他昨天告訴過你早點(diǎn)兒到那兒嗎？

—Yes,hehad./No,hehadn't.

是的，他告訴了。/不，他沒有。

4.被動語態(tài)形式：had+been+過去分詞。如：WhenIgotthere,thewindowshadbeenbroken.

二.用法1.過去完成時表示一個動作或狀態(tài)在過去某一時間或動作之前已經(jīng)結(jié)束或完成.它表示的動作發(fā)生的時間是“過去的過去”.Ihadwrittenthearticlewhentheycame.2.表示一個動作或狀態(tài)在過去的某一時間之前已經(jīng)開始,一直延續(xù)到這一過去時間.Theyhadworkedfor12hoursby6o’clockthismorning.3.明顯標(biāo)志:用介詞by,before

等構(gòu)成的時間短語.用連詞when,before,after或者短語bythetime引導(dǎo)的時間狀語從句.與過去完成時連用的時間狀語有already,yet,still,never等.Wehadlearnt20Englishsongsbytheendoflastmonth.Theplanehadtakenoff

whenIreachedtheairport.BythetimeIgotup,mybrotherhadlefthome.TheyhadalreadyleftbeforeIreturned.常用動詞的過去式和過去分詞playplayedplayedworkworkedworkedleaveleftleftsaysaidsaidgowentgonebewas/werebeentaketooktakengetgotgottenstartstartedstartedbreakbrokebrokenspeakspokespokendrivedrovedrivenseesawseeneatateeatengivegavegivenknowknewknowngrowgrewgrown1.We___________(learn)twothousandswordsbythetimeIwenttoMiddleSchool.

Canyoudoit?3.Whenwe_______(arrive)atthestation,they__________(wait)formorethantwentyminutes.

hadlearnedarrivedhadwaited2.I___________(know)

himwhenIwasastudent.hadknown4.Oneofthemendidn’tmove,becausehe__________(break)hislegs.

hadbroken5.Byyesterdayeveninghe_______________thatimportantletter.(write)6.IthoughtI_______themanbefore.(meet)7.Bysixo’clockthey____________fortenhours.(work)8.IwenttoNick’shouse,buthe____________out.(go)9.I________________theproblemwhenclasswasover.(notunderstand)

hadwrittenhadmethadworked

hadgonehadn’tunderstood口語練習(xí)1.a.Igotup.Mybrotherwasintheshoweralready.b.BythetimeIgotup,mybrother____________intheshoweralready.2.a.Iranoutsidetothebusstop.Thebuswasgone.b.3.a.Igothome.Irealizedthatmyhomeworkwasstillatschool.b.

hadgottenBythetimeIranoutsidetothebusstop,thebushadalreadygone.WhenIgothome,IrealizedthatIhadleftmyhomeworkatschool.4.a.Iwokeup.Myclockstoppedtwohoursago.b.5.a.Igottothecinemaat8.Thefilmstartedat7:30.b.6.a.Igottotheparty.Jimwenthomeanhourago.b.BythetimeIgottothecinema,thefilmhadalreadystarted.BythetimeIwokeup,myclockhadstoppedfortwohours.WhenIgottotheparty,Jimhadalreadygonehome.1.Kate'sneverseenChinesefilms，____?

A.hasn'tsheB.hassheC.isn'tsheD.isshe1.Kate'sneverseenChinesefilms，____?

A.hasn'tsheB.hassheC.isn'tsheD.isshe2.-AnnhasgonetoShanghai.

-So______herparents.

A.hasB.hadC.didD.have3.-Mum,mayIgooutandplaybasketball?

-______you______yourhomeworkyet?

A.Do;finishB.Are;finishing

C.Did;finishD.Have;finished4.HisbrotherhasbeentoStoneForestwice______hecametoYunnan.afterB.beforeC.sinceD.for5.Tom______theCDplayerfortwoweeks.

A.haslentB.hasborrowed

C.hasboughtD.hashad6.I______aletterfromhimsinceheleft.

A.didn'treceiveB.haven'tgotC.didn'thaveD.haven'theard7.-Haveyouever______LintongtoseetheTerraCottaWarriors?-Yes,Ihave.wenttoB.gonetoC.beeninD.beento8.Myparents______Shangdongfortenyears.havebeeninB.havebeentoC.havegonetoD.havebeen9.Iwon'tgototheconcertbecauseI____myticket.A.lostB.don'tloseC.havelostD.iscoming1.WhenI_____(get)there,theSmithsalready____(have)theirdinner.2.Bytheendoflastyearthey_____(produce)morethan500,000tractors.3.Tom_____(read)atleast20novelsinthepastyear.4.He_____(work)onafarm