Unit12LifeisfulloftheunexpectedSectionAGrammarFocus4c课件人教版九年级英语全册

SectionAGrammar-4cUnit12Lifeisfulloftheunexpected.PresentationLearningaims1.学习本课新词汇:cream，workday，showup,bean,market,bytheendof2.掌握句型：BythetimeIarrivedattheparty,everyoneelsehadalreadyshownup.Whenshearrivedatthemovietheater,sherememberedshehadforgottentofeedherdog.3.

通过翻译Grammarfocus

中的句子，完成句子，探究过去完成时的概念，用法和结构。4.通过控制性练习(4a)和自由练习(4b，4c)，能正确使用过去完成时。PresentationRevisionPre-grammarLookandsay.Whathappenedtoher?When

shegottoschool,sherealized

thatshehadleftherbackpackathome.Bythetimeshegotup,herbrother

had

already

gottenintheshower.Bythetimeshegotoutside,thebushad

already

left.9Bythetimeshewalkedintoclass,theteacherhadstartedteachingalready.BythetimeIgot

backtoschool,thebellhadrung.一般过去式从句主句过去完成时动作发生在后动作发生在前在过去某个时间或某个动作之前发生的动作或存在的状态，它表示动作发生的时间是“过去的过去”。定义(1)由时间状语来判定①by+过去的时间点例：到昨天9点钟时，她已经读完了这本书。Shehadfinishedreadingthebookby9o’clock

yesterday.判断依据Let’s

enjoy

a

videoandlearnmore.②bytheendof+过去的时间点例：到上个月月底，我们已经完成了所有工作。 Wehadcompletedalltheworkbytheend oflastmonth.Grammar过去完成时翻译：她说她之前看过了这部电影。___________________________________________当我到达车站的时候，火车已经走了。____________________________________________

(2)由“过去的过去”来判定Shesaidthatshehadseenthefilmbefore.WhenIgottothestation,thetrainhadalreadyleft.

Thefamilyatefood.DaddyPigslept.MummyPigputthedishesaway.Peppafedtheducks.DaddyPiggotridofthebee.1.Whatdidtheydoonthatday?2.Puttheminthecorrectorder.Let’sthinkandsay.Let’sexploreandlearn.1.WhendidDaddyPigsleep?

2.Whendidheeatdeliciousfood?3.Whichhappenedearlier?

Inthepast.Inthepast.Heatedeliciousfood.DaddyPighadeatendeliciousfoodbeforeheslept.pastnowpastof

thepastGrammar过去完成时构

成had+动词的过去分词概

念表示在过去的某一时间或动作之前已经发生或完成了的动作。即：过去的过去。时

间表示动作发生在过去的过去1.

by+过去的时间点Hehadfinishedreadingthebookby8o’clockyesterday.

2.bytheendof+过去的时间点

Bytheendoflastyear,

IhadstayedinXi’anforsevenyears.3.before+过去的时间点

ThemoviehadstartedbeforeIarrivedatthecinema.4.when+过去的时间点

WhenJackarrived,Maryhadbeenawayforanhour.时间状语过去完成时GrammarFocus过去完成时是相对的时态，可通过分析语境来确定。过去完成时与一般过去时的区别一般过去时表示过去某时间发生的动作或存在的状态，而过去完成时则表示过去某一时间以前（即过去的过去）发生的动作或存在的状态。e.g.Wehavelearned1,000Englishwordssofar.Wehadlearned1,000Englishwordsbythen.bylastyearnowbegantolearnfor4years在told,said,knew,heard,thought等动词引导的宾语从句中，一般用过去完成时。例如：1.他说他以前见过你。Hesaidthathe____________(see)youbefore.2.Tom说他借了这本书两周了。Tomsaidhe_________thebookfor2weeks.3.他告诉我说他们队已经赢了。Hetoldmethathisteam_______already_______(win).4.她说她仍没去过长城。Shesaidthatshe_______________(beto)theGreatWallyet.hadseenhadkepthadwonhadn’tbeento翻译：她说她之前看过了这部电影。___________________________________________当我到达车站的时候，火车已经走了。____________________________________________

由“过去的过去”来判定Shesaidthatshehadseenthefilmbefore.WhenIgottothestation,thetrainhadalreadyleft.

Let’sobserve.过去完成时肯定句结构had+过去分词DaddyPig

hadeatendeliciousfoodbeforeheslept.DaddyPigslept.过去完成时一般与before,after,when，bythetime,till/until等引导的时间从句连用，从句用一般过去时。例如：1.她到家之前她的孩子已经睡着了。

Whenshegothomeherchildren____________(sleep).

2.在他们到达之前电影已经开始了。

Beforetheyarrivedherethefilm______already_______(start).

3.她出去之前公共汽车就已经离开了。

Bythetimeshegotoutside,thebus__________________.hadslepthadstartedhadalreadyleft过去完成时与一般过去时的区别一般过去时表示过去某时间发生的动作或存在的状态，而过去完成时则表示过去某一时间以前（即过去的过去）发生的动作或存在的状态。e.g.Wehavelearned1,000Englishwordssofar.Wehadlearned1,000Englishwordsbythen.bylastyearnowbegantolearnfor4yearsThinkofwaystofinishtheanswers.1.A:Whydidn’tyouhandinyoursciencehomework?B:BeforeIcouldstartworkingonit,_________________________——————————————————————————.2.A:Whydidn’tyoutakeashowerthismorning?B:BythetimeIgotup,___________________________________——————————————————————————.3.A:Whydidyouhavetowalkhomefromschool?B:BythetimeIleftmyschool,_____________________________.

mybabybrotherstartedcryingandIhadtolookafterhimbecausemymotherwassick

mysisterhadalreadygoneintothebathroomandthebuswashonking(鸣喇叭)formetohurryuptheschoolbushadalreadyleft1.时间状语不同过去完成时：强调“过去的过去”；一般过去时：强调过去某一特定的时间。 Theyhadarrivedatthestationbytenyesterday.

他们昨天十点前就到车站了。

Theyarrivedatthestationattenyesterday.

他们昨天十点到了车站。 Differences

4cExercise1.Timwentintothebathroom.Marygotup.

____________________________________________________________________2.Thecoffeebecamecold.Iputcreaminthecoffee.____________________________________________________________________3.Theteachercollectedthemathhomework.Igottoschool.____________________________________________________________________4.Icompletedtheworkformyboss.Theworkdayended.____________________________________________________________________5.Themoviestarted.Iarrivedatthecinema.____________________________________________________________________6.Mymotherfinishedmakingtheapplepie.Igothomefrommylanguagecourse._____________________________________________________________________Makesentencesusingbythetimeorbefore.BythetimeMarygotup,Timhadalreadygoneintothebathroom.BeforeIputcreaminthecoffee,thecoffeehadbecomecold.BythetimeIgottoschool,theteacherhadcollectedthemathhomework.Bythetimetheworkdayended,Ihadcompletedtheworkformyboss.BythetimeIarrivedatthecinema,themoviehadstarted.BythetimeIgothomefrommylanguagecourse,mymotherhadfinishedmakingtheapplepie.

宾语从句，主句一般过去时，从句动作发生在主句之前，用过去完成时。WhenIgottoschool,IrealizedthatIhadleftmybackpackathome.bythetime/before+一般过去时的时间状语从句，主句动作发生在从句之前，主句用过去完成时By

the

time

I

got

back

to

school,thebellhadrung.BeforeIgottothebusstop,thebushadalreadyleft.2.在过去的时间中，哪个先发生，哪个后发生。在没有明确的过去时间状语作标志时，谓语动词动作发生的时间先后须依据上下文来判断：先发生的用过去完成时，后发生的则用一般过去时。Shewasveryhappy.Herwholefamilywerepleasedwithher,too.Shehadjustwonthefirstinthecompositioncompetition.Differences

when引导的时间状语从句用一般过去时，主句表示decided的时候马上要做的事情，发生在decided这个动作之后，用过去将来时。IwasabouttogouptomyofficewhenIdecidedtogetacoffeefirst.As引导的时间状语从句用过去进行时，主句表示waswaiting那个时间发生的动