Unit12SectionA(GrammarFocus-4c)课件人教版九年级英语全册

Lifeisfulloftheunexpected.Grammarfocus-4cUnit12WhatdidMummyPigdobeforethepicnicWhatdidtheydoonthatdayShepreparedalotoffoodforthepicnic.Let’swatchavideo.Let’scheck.（点击白色矩形显示）bebecomebringbuyblowbeenbecomebroughtboughtblowndealeatforgetfallleavedealtateforgotfellleft0102030405comecutdo060607was/werebecamebroughtboughtblewdealteatenforgottenfallenleftcamecutdidcomecutdonemakegohavemadegonehadmadewenthadPresentationWarmingupPre-grammarLookandsay.HaveyoueverbeenlateforschoolThebellrang.8:00A.MShegottoschool.8:15A.MpresentBythetime_______________,thebell_________.she

got

toschoolhadrung8:22A.M.8:20A.MpresentTheteacherstartedteachingalready.Shegotintotheclassroom.Whenshe___________________,

theteacher__________________already.gotintotheclassroomhadstartedteachingGrammarfocusWhenIgottoschool,IrealizedthatIhadleftmybackpackathome.BythetimeIgotbacktoschool,thebellhadrung.BeforeIgottothebusstop,thebushadalreadyleft.IwasabouttogouptomyofficewhenIdecidedtogetacoffeefirst.AsIwaswaitinginlinewiththeotherofficeworkers,Iheardaloudsound.第一类：第二类：把下列句子分类Lead-in①BythetimeMarygottoschool,thebellhadrung.②Whenshegotintotheclassroom,theteacherhadstartedteachingintheclassroom.③Beforeshearrivedatthebusstop,thebushadalreadyleft.

④By6:45thisevening,

hermomhadcookedthedinner.由by,bythetime,when和

before引导的表示一般过去时的从句。由had+V-ed构成的过去完成时。ThePastPerfectTense

过去完成时

概念：过去完成时表示某一动作或状态在过去某一时间或动作之前已经发生或完成，也可以指过去的动作延续到过去的某一时刻，它表示发生的时间是“过去的过去”。现在现在过去过去的将来过去的过去过去完成时GrammarfocusDiscusswithyourpartner!1、为什么主句和从句分别使用过去完成时态？2、在使用不同时态时从句和主句的先后顺序？

主句为过去完成时，从句是一般过去时，主句动作发生在从句之前。两个动作同时进行，主从句都是一般过去时或过去进行时。WhenIgottoschool,IrealizedthatIhadleftmybackpackathome.By

the

time

I

got

back

to

school,thebellhadrung.BeforeIgottothebusstop,thebushadalreadyleft.IwasabouttogouptomyofficewhenIdecidedtogetacoffeefirst.AsIwaswaitinginlinewiththeotherofficeworkers,Iheardaloudsound.Whenhecamein,thestudentsstoodup.Whenthebabysawhermother,shestoppedcryingHewasabouttowatchamoviewhenhisparentsknockedatthedoor.Theywereabouttogetonthebuswhentheyheardsomeoneshout.AsIwasstandinginfrontoftheteachers’office,Isawaboyfightwithanotherboy..Ashewasdoinghousework,abirdflewintothekitchen.Q1：在以上时间状语从句中，主句和从句的动作是先后发生，还是同时发生？Q2：主从句都使用过去时态的时间状语从句的引导词有什么？Answers:1.在以上的时间状语从句中，主句和从句的动作都是同时发生，或者在进行一个动作时，另一个动作突然发生。2.主句和从句都用过去时态的时间状语从句引导词有when,as等●Whenhecamein,thestudentsstoodup.●Whenthebabysawhermother,shestoppedcrying.●Hewasabouttowatchamoviewhenhisparentsknockedatthedoor.●Theywereabouttogetonthebuswhentheyheardsomeoneshout.●AsIwasstandinginfrontoftheteachers’office,Isawaboyfightwith

anotherboy.●Ashewasdoinghousework,abirdflewintothekitchen.Groupwork在以上的时间状语从句中，主句和从句的动作是先后发生还是同时发生主从句都用过去时态的时间状语从句的引导词有什么Discussandanswerthequestions.●WhenIgotup,Ifoundthatmybrotherhadalreadytakenabathinthebathroom,●Whenshegottothecheck-out,sherealizedshehadleftherpurseathome.●BeforeIarrivedattheairport,theplanehadalreadytakenoff.●Theyhadalreadyhadbreakfastbeforetheygottothehotel.●Mostoftheguestshadleftbythetimehearrivedattheparty.●ThefilmhadalreadybegunbythetimeIgottothecinema.过去完成时的结构？过去完成时的结构：“助动词had+动词的过去分词”1.在以上的时间状语从句中，主句和从句的动作是同时发生，或者是在进行一个动作时，另外一个动作突然发生。2.主从句都用过去时态的时间状语从句引导词有when,as等。●Whenhecamein,thestudentsstoodup.●Whenthebabysawhermother,shestoppedcrying.●Hewasabouttowatchamoviewhenhisparentsknockedatthedoor.●Theywereabouttogetonthebuswhentheyheardsomeoneshout.●AsIwasstandinginfrontoftheteachers’office,Isawaboyfightwith

anotherboy.●Ashewasdoinghousework,abirdflewintothekitchen.●WhenIgotup,Ifoundthatmybrotherhadalreadytakenabathinthebathroom,●Whenshegottothecheck-out,sherealizedshehadleftherpurseathome.●BeforeIarrivedattheairport,theplanehadalreadytakenoff.●Theyhadalreadyhadbreakfastbeforetheygottothehotel.●Mostoftheguestshadleftbythetimehearrivedattheparty.●ThefilmhadalreadybegunbythetimeIgottothecinema.过去完成时的用法？过去完成时的用法：表示在过去某一时间或动作之前已经发生或完成了的动作。表示动作发生在过去的过去GrammarfocusLet’stalk.Igotup.Mysisterwenttothelibrary.Myfathercleanedthehouse.Mygrandparentswentforawalk.OurfamilyfinishedbreakfastMymotherpreparedbreakfast.Usebythetimeorwhen

tomakesentences.Bythetime__________,sb

had_______________.Sbhad__________before___________________.WhenIgotup,sbhad_______________________.Myweekendnow11:00am10:00am7:00am8:00am9:00am9:30amPresentationPre-grammarGrammarFocus探究语法规律探究一：过去完成时的结构和用法◆WhenIgottoschool,IrealizedthatIhadleftmybackpackathome.◆BythetimeIgotbacktoschool,thebell hadrung.◆BeforeIgottothebusstop,thebushad alreadyleft.由when,bythetime,before等引导时间状语从句时，若描述发生在过去的事，主句常用过去完成时(had+过去分词)表示动作发生在过去的过去。

参照物---时间状语从句2.由“过去的过去”来判定：过去完成时表示“过去的过去”，是指过去某一动作之前已经发生或完成的动作，即动作有先后关系，动作在前的用过去完成时，在后的用一般过去时。这种用法常出现在：宾语从句中:当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。在told,said,knew,heard,thought等动词后的宾语从句。Shesaid

thatshehadseen

thefilm

before.她说她以前看过这电影。过去完成时的构成：_____+_________.过去完成时表示：—————————————————————3.过去完成时常与_________________________等时间状语连用。had

过去分词过去某一时刻或动作之前已经发生或完成的动作when,before，bythetime,bytheendof…by+时间点，过去完成时小结Makesentencesusingbythetimeorbefore.4a1.Timwentintothebathroom.Marygotup.2.Thecoffeebecamecold.Iputcreaminthecoffee.

3.Theteachercollectedthemathhomework.Igottoschool.1.BythetimeMarygotup,Timhadalreadygoneintothebathroom.2.BeforeIcouldputcreaminthecoffee,thecoffeehadbecomecold.3.BythetimeIgottoschool,theteacherhadcollectedthemathhomework.4aMakesentencesusingbythetimeorbefore.4.Icompletedtheworkformyboss.Theworkdayended.5.Themoviestarted.Iarrivedatthecinema.6.Mymotherfinishedmakingtheapplepie.Igothomefrommylanguagecourse.Ihadcompletedtheworkformybossbeforetheworkdayended.ThemoviehadstartedbeforeIarrivedatthecinema.BythetimeIgothomefrommylanguagecourse,mymotherhadfinishedmakingtheapplepie.finish在此处作及物动词,意为“结束;完成",其后跟名词或动词-ing形式作宾语。finishdoingsth.意为"做完某事"。Writethepastformandpastparticipleforthefollowingverbs.rushoutforgetarriveatgointoshowupfindoutrushedrushedforgotforgottenarrivedarrived

wentgone

showedshown

foundfound赶到；露面原形过去式过去分词1．SeeingJohnrushintotheroomwithtearsinhiseyes,I

askedhimwhat_____.A.wouldhappen B.hadhappenedC.happened D.washappened2．Jake_____hiskeyintheofficesohehadtowaituntilhiswife_______home.A.hasforgotten,comesB.forgot,comeC.hadleft,cameD.hadleft,wouldcomeLet’spractice.3．YesterdaywhenI_______tothestation,thetrain______

already.

A.got,hadleft B.got,hasleftC.hadgot,left D.got,left4．Igottothepartylate.BythetimeIarrived,somepeople______homealready.A.went B.wouldgoC.hadgone D.havegoneLet’spractice.Fillintheblankswiththecorrectformsofthewordsinthebox.4brushoutforgetarriveatgointoshowupfindout1.BythetimeIarrivedattheparty,everyoneelse_____already_________.2.Whenheputthenoodlesintoabowl,herealizedhe____________toaddthegreenbeans.3.Bythetimemymothercamebackfromthemarket,I______already____________thedoortogoformypianolesson.hadrushedoutshownuphadforgottenhadshowup意为“赶到;露面”例:Mybestfrienddidn'tshowuponmybirthday.我最好的朋友在我生日那天没有来。Competition

Bytheendoftheschoolday,___________________________________.Completethesentences.Makenewsentencesasmanyaspossible.①showsb.around意为“带领某人参观"。例:TheguideshowedusaroundtheSummerPalace.导游带领我们参观了颐和园。②onshow意为“展览;展出"。例:Thebeautifulpicturesareonshowinthemuseum.这些美丽的画正在博物馆展出。③showsb.sth.=showsth.tosb.意为“给某人看某物"。例:Canyoushowmeyourphotos=Canyoushowyourphotostome你可以让我看一下你的照片吗4b4.Beforeshegottotheairport,she___________abouttheearthquake.5.Whenshe__________themovietheater,sherememberedshehadforgottentofeedherdog.6.Beforeshegotachancetosaygoodbye,he____________thebuilding.Fillintheblankswiththecorrectformsofthewordsinthebox.4brushoutforgetarriveatgointoshowupfindouthadfoundouthadgoneintoarrivedatLet’spractice.rushoutforgetarriveatgointoshowupfindout1.BythetimeIarrivedattheparty,everyoneelse__________already__________.2.Whenheputthenoodlesintoabowl,herealizedhe___________toaddthegreenbeans.3.Bythetimemymothercamebackfromthemarket,I________already__________ofthedoortogotomypianolesson.hadshownuphadforgottenhadrushedoutLet’spractice.rushoutforgetarriveatgointoshowupfindout4.Beforeshegottotheairport,she____________abouttheearthquake.5.Whenshe__________themovietheater,sherememberedshehadforgottentofeedherdog.6.Beforeshegotachancetosaygoodbye,he_____________thebuilding.arrivedathadgoneintohadfoundoutWritetwotruestatementsandonefalsestatementaboutyourdayyesterday.Thenaskyourclassmatestoguessthefalsestatement.4c1.BythetimeIleftforschoolinthemorning,______2.Bytheendoftheschoolday,____________3.Bydinnertime,____________Ihadalreadyhaddinner.IhadalreadyfinishedmyhomeworkIhadalreadyeatenplentyoffruits.IhadgotastorybookfromJane.IhadfinishedthetestIhadcleanedtheclassroom.Ihadhadtoomanybananas.Bytheendof意为“到...时为止，....之前;到....结束时”。其后若接表示将来的时间，句子常用将来完成时;若接表示过去的时间，句子常用过去完成时。例:Bytheendofnextmonth,|willhavefinishedreadingthisbook.到下个月末，我将已读完这本书。Bytheendoflastmonth,Ihadplantedthousandsoftrees.到上个月末，我已经种了数干棵树了。4cPresentationPost-grammarClasstest一、用所给单词的适当形式填空1.他说他以前见过你。Hesaidthathe______________(see)youbefore.hadseen2.当我进来时，他已做完了作业。WhenIcamein,he________________(finish)hishomework.hadfinished3.Thechildrenranawayafterthey___________(break)thewindow.4.IwenttoTom’shousebuthe__________(go)out.hadgon