Unit12SectionA（GrammarFocus-4c）課件 人教版英語九年級(jí)

Unit12Lifeisfulloftheunexpected.SectionAGrammarFocusReviewandpreparationLookatthepicturesandtalkaboutMary’sday.overslepttookashowergottothebusstoprantoschoolleftherbackpackranbacktoschoolgotbacktoschoolclassstarted123456781.Timwentintothebathroom.Marygotup.____________________________________________________________________________2.Theco?eebecamecold.Iputcreamintheco?ee.____________________________________________________________________________

4aMakesentencesusingbythetimeorbefore.BythetimeMarygotup,Timhadalreadygoneintothebathroom.BeforeIputcreaminthecoffee,thecoffeehadbecomecold.Theteachercollectedthemathhomework.Igottoschool.________________________________________________________________________________Icompletedtheworkformyboss.Theworkdayended.________________________________________________________________________________

BythetimeIgottoschool,theteacherhadcollectedthemathhomework.Bythetimetheworkdayended,Ihadcompletedtheworkformyboss.Themoviestarted.Iarrivedatthecinema.______________________________________________________________________________Mymotherfinishedmakingtheapplepie.Igothomefrommylanguagecourse.____________________________________________________________________________________________________________________BythetimeIarrivedatthecinema,themoviehadstarted.BythetimeIgothomefrommylanguagecourse,mymotherhadfinishedmakingtheapplepie.BythetimeIarrivedattheparty,everyoneelse_______already_________.2.Whenheputthenoodlesintoabowl,herealizedhe_____________toaddthegreenbeans.4bFillintheblankswiththecorrectformsofthewordsinthebox.rushoutforgetarriveatgointoshowupfindouthadshownuphadforgottenBythetimemymothercamebackfromthemarket,Ialready______________thedoortogoformypianolesson.4.Beforeshegottotheairport,she_____________abouttheearthquake.5.Whenshe__________themovietheater,sherememberedshehadforgottentofeedherdog.6.Beforeshegotachancetosaygoodbye,he____________thebuilding.hadrushedouthadforgottenarrivedathadgoneintoBythetimeIleftforschoolinthemorning,_______________________________________Bytheendoftheschoolday,______________________________________3.Bydinnertime,I_____________________________________4cWritetwotruestatementsandonefalsestatementaboutyourdayyesterday.Thenaskyourclassmatestoguessthefalsestatement.GrammarFocusWhenIgottoschool,IrealizedthatIhadleftmybackpackathome.BythetimeIgottoschool,thebellhadrung.BeforeIgottothebusstop,thebushadalreadyleft.IwasabouttogouptomyofficewhenIdecidedtogetacoffeefirst.AsIwaswaitinginlinewiththeotherofficeworkers,Iheardaloudsound.

表示過去某一時(shí)間或動(dòng)作以前已經(jīng)發(fā)生或完成了的動(dòng)作。它表示動(dòng)作發(fā)生的時(shí)間是“過去的過去”。表示發(fā)生在過去的動(dòng)作對(duì)過去的某一點(diǎn)造成的某種影響或結(jié)果，用來指定在另一個(gè)過去行動(dòng)之前就已經(jīng)完成了的一個(gè)事件。過去完成時(shí)Finishthetask1.過去完成時(shí)的構(gòu)成：_____+___________2.過去完成時(shí)表示：

____________________________________________________________________3.過去完成時(shí)常與______________________等引導(dǎo)的時(shí)間狀語連用。had過去分詞when,before,bythetime過去某一時(shí)刻或動(dòng)作之前已經(jīng)發(fā)生或完成的動(dòng)作。1)當(dāng)我到達(dá)學(xué)校的時(shí)候，我才意識(shí)到我把書包忘在家里了。

_______Igottoschool,IrealizedthatI____________mybackpackathome.2)到我返回學(xué)校的時(shí)候，鈴聲已經(jīng)響過了。

_______________Igotbacktoschool,thebell_____________.WhenhadleftBythetimehadrungGrammarFocus3)我到達(dá)公共汽車站之前，汽車已經(jīng)離開了。

BeforeI__________thebusstop,thebus____________________.4)我決定先買一杯咖啡，然后再去辦公室。

I__________________gouptomyofficewhenIdecidedtogetacoffeefirst.gottohadalreadyleftwasaboutto5)就在我和別的工作人員一起排隊(duì)等候的時(shí)候，聽到了一個(gè)巨大的聲響。

AsI_________________________withtheotherofficeworkers,I______________________.waswaitinginlineheardaloudsound◆WhenIgottoschool,IrealizedthatIhad leftmybackpackathome.◆BythetimeIgotbacktoschool,thebell hadrung.◆BeforeIgottothebusstop,thebushad alreadyleft.由when,bythetime,before等引導(dǎo)時(shí)間狀語從句時(shí)，若描述發(fā)生在過去的事，主句常用過去完成時(shí)(had+過去分詞)表示動(dòng)作發(fā)生在過去的過去?！鬒wasabouttogouptomyoffice

whenIdecidedtogetacoffeefirst.◆AsIwaswaitinginlinewiththeotherofficeworkers,Iheardaloudsound.beabouttodo,bedoing等表示即將或正在做某事時(shí)，常用when引導(dǎo)從句表示突然發(fā)生的動(dòng)作?！緦?shí)戰(zhàn)演練】

用所給詞的適當(dāng)形式填空。

1.

When

I

got

there

the

bus

_________

(go).

2.

By

the

time

I

got

to

class,

the

teacher

___________(start)

teaching.

3.

We

_____________

(learn)

over

1,000

words

bytheend

of

last

term.4.

I

___________

(clean)

the

room

before

he

arrived

here.

hadgonehadstartedhadlearnthadcleanedbythetime的用法bythetime

意為“到……時(shí)候(為止)”，是一個(gè)介詞短語，在句中常起到連詞的作用，引導(dǎo)時(shí)間狀語從句。如果從句中的謂語動(dòng)詞是一般過去式，那么主句的謂語動(dòng)詞通常用過去完成時(shí)，表示“截止到從句動(dòng)作發(fā)生時(shí)，主句動(dòng)作已經(jīng)完成，即過去的過去”。例：Bythetimeyoucameback,Ihadfinishedthisbook.你回來時(shí)我已經(jīng)把這本書看完了。（從句謂語動(dòng)詞cameback為一般過去時(shí)，所以主句動(dòng)作用過去完成時(shí)hadfinished,表示過去的過去。）2.如果從句中的謂語動(dòng)詞為一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí)，那么從句中的謂語動(dòng)詞常用將來完成時(shí)，表示“截止到將來的某一時(shí)刻為止，主句動(dòng)作將已完成?！崩築ythetimeIgethome,theywillhaveleft.我到家時(shí)他們將已經(jīng)離開。

BythetimeIgraduatenextyear,Iwillhavelivedhereforfiveyears.到明年畢業(yè)時(shí)，我將已經(jīng)在這待了五年了。（1）bytheendof+時(shí)間點(diǎn)意為“到……結(jié)束時(shí)”

①+過去的時(shí)間點(diǎn)，主句用過去完成時(shí)；例：Bytheendoflastyear,IhadstayedinXi’anforsevenyears.到去年結(jié)束時(shí)，我已經(jīng)在西安待了7年了。

②+將來的時(shí)間點(diǎn)，主句用將來完成時(shí)；拓展例：Bytheendofnextmonth,Iwillhavefinishedmynewbook.到下個(gè)月結(jié)束時(shí)我將要完成我的新書。(2)by+時(shí)間點(diǎn)意為“到……為止；截止……時(shí)”

①+現(xiàn)在的時(shí)間點(diǎn)，主句用現(xiàn)在完成時(shí)；例：Bynow,Ihavefinishedallmyhomework.

截止現(xiàn)在，我已經(jīng)完成了所有的作業(yè)。

②+過去的時(shí)間點(diǎn)，主句用過去完成時(shí)；例：Byyesterday,thebuildinghadbeencompleted.截止昨天，這個(gè)建筑就已經(jīng)完成了。③+將來的時(shí)間點(diǎn)，主句用將來完成時(shí)。例：Bytomorrow,allthestudentswillhavebeenoutoftheschool.到明天所有的學(xué)生都將離校。一、根據(jù)句意及漢語提示完成單詞。1.Pleaseputsome_________(奶油)onthebread.2.Weneedfourbananastomakebanana_________(果餡餅).3.Cocoa_________(豆)areusedtomakesomekindsofdrink.4.Wouldyouliketogotothe_________(集市)tobuysomefoodwithme?5.Myfatherdoesn’tallowmetoplaycomputergameson_________(工作日).creampiesbeansmarketweekdays二、根據(jù)句意，用括號(hào)中所給單詞的適當(dāng)形式填空。1．Alicesaidshe____

____(notfind)hernewpenyet.2．WhenBobarrivedhome，herealizedsomeone______

__(break)intohishouse.3．Myfriends________(take)manyphotosbeforeIgottoschool.4．Ibeganwatchinghereanhourago，buttillnownothing____

____(happen)．5．Bythetimehegottothecinema，thefilm

_

_______(beon)fortenminutes.hadn'tfoundhadbrokenhadtakenhadbeenonhashappened三、單項(xiàng)選擇。1．Mostofmygoodfriends________whenI________attheparty.A．left；hadarrived

B．hadleft；arrivedC．left；arrived D．hadleft；hadarrived2．—Youdidn'twatchthemovie?—Yes，butbythetimeI________tothecinema，themovie________forseveralminutes.A．got；hasbegun B．got；hadbeenonC．got；hadbegunD．got；hasbeenon3．________lastmonth，Ihadplantedsixtrees.A．Bytheendof B．AttheendofC．Intheend D．TotheendBBA4．—Whywashelateforschoolyesterday?—Heoverslept.Bythetime