过去完成时经典PPT课件

SectionA,过去完成时,复习用现在完成时填空,1.I_(be)toBeijingmanytimes.2.Greatchanges_(take)placeinShanghaiinthelasttenyears.3.Thestudents_already_(finish)theirhomework4.Thestudents_(learn)manywordssincethey_(come)toourschool.5.Tom_(stay)inEuropefortwoweeks.,havebeen,havetaken,finished,havelearned,hasstayed,have,came,现在完成时的构成,主语+have/has+过去分词+,过去分词的构成：,1.规则动词的变化：,a)一般情况下在动词后面加ed,work-worked,play-played,b)以辅音字母加y结尾的动词，把y改i再加ed,study-studied,carry-carried,c)以重读闭音节结尾的，前面有单个元音字母时，双写辅音字母，再加ed,stop-stopped,drop-dropped,2.不规则动词的变化见课本,本课出现的主要动词的过去式和过去分词,getgotgottengowentgoneleaveleftleftstartstartedstartedbewas/werebeentaketooktakenrunranrunsleepsleptsleptoversleepoversleptoverslept,1.cleanedtheroomat5:00,2.closedthewindowat5:20,hadcleanedtheroom,closedthewindow,Shehadcleanedtheroombeforesheclosedthewindow.,Aftershehadcleanedroom,sheclosedthewindow.,1.(first)ateanapple,2.(then)slept,hadeatenanapple,slept,Shehadeatenanapplebeforesheslept.,Aftershehadeatenanapple,sheslept.,2.(then)playedsoccer,1.(first)didhishomework,playedsoccer,haddonehishomework,Hehaddonehishomeworkbeforeheplayedsoccer.,Afterhehaddonehishomework,heplayedsoccer.,Maryranbacktoschoolbecauseshehadleftherbookintheclassroom.,Whathappenedfirst?,a.Maryranbacktoschool.,b.Maryleftherbookintheclassroom.,Igothome,Mylittlebrotherwenttobed,BythetimeI_,mylittlebrother_tobed.,gothome,hadgone,Igottoschool,Theteachercameintotheclassroom,BythetimeI_,theteacher_intotheclassroom.,gottoschool,hadcome,-,12,BythetimeI_,Thebusleftatfivetoeight.,Igotoutsideateight.,thebus_already_.,wentout,had,left,-,13,by:在之前，不迟于bynoon,bytomorrow,bylastweek,by6:00,bytheendof到末为止bythetime到的时候,BythetimeIgothome,BythetimeIcamein,BythetimeIgottoschool,Bythetimeshegotoutside,thebushadalreadyleft.,她出去的时候,公共汽车已经开走了.,bythetime意思是“到的时候”,相当于when引导的从句,后接过去时的句子时,主语的谓语动词用had+过去分词，也就是过去完成时.,-,15,Igothome,Mylittlebrotherwenttobed,BythetimeIgothome,mylittlebrotherhadgonetobed.,弟弟上床睡觉在我回家之前。,-,16,Igottoschool,Theteachercameintotheclassroom,BythetimeIgottoschool,theteacherhadcomeintotheclassroom.,老师进入教室在我到达学校之前。,-,17,When/BythetimeBefore/After,+,过去时态,+,从句,过去完成时态,主句,-,18,thepolicemangettotheshop,Tomrunaway,Bythetimethepolicemangottotheshop,now,Tomhadrunaway,-,19,LiuMeiwakeup,theconcertbeover,BythetimeLiuMeiwokeup,theconcerthadbeenover.,now,-,20,20112012,learn4000Englishwords,Bytheendof,lastyear,Bytheendoflastyear,Ihadlearned4000newwords.,ThePastPerfectTense过去完成时,过去完成时的构成助动词had(用于各种人称和数)+过去分词,2.过去完成时态的含义:主要是表示在过去某个时间,或是动作之前已经发生或完成的动作.也就是：过去的过去.,-,22,过去完成时的判断依据:1.由时间状语来判定：一般说来，各种时态都有特定的时间状语。与过去完成时连用的时间状语有：1)by+过去时间点Ihadfinishedreadingthebookbynineoclocklastnight.2)bytheendof+过去时间点.如Wehadlearnedover2000Englishwordsbytheendoflastterm.3)before+过去时间点.如Theyhadplanted600treesbeforelastFriday.,-,23,2.由“过去的过去”来判定。,在状语从句中，先发生的动作用过去完成时，后发生的动作用一般过去时。,WhenIgottothestation,thetrainhadalreadyleft.,Afterhehadfinishedhishomework,hewenttobed.,first,first,-,24,3.常用在宾语从句中: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。如：Hetoldmehehadalreadyfinishedhishomework.IrealizedIhadleftmykeysathome.,-,25,4.体现在上下文中IdidntgotothemoviesyesterdaybecauseIhadseenittwice.,-,26,Workouttherule:,过去完成时的否定形式：过去完成时的疑问形式：肯定回答：否定回答：,主语hadnothadnt+p.p.+其它.,Yes,主语+had.,Had+主语p.p.+其它?,No,主语+had+not.,-,27,BythetimeIgotup,mybrotheralready(have)hisbreakfast.2.BythetimeIgottothestation,thebusalready(leave).3.WhenIgottoschool,IrealizedI(leave)mybagathome.,had,had,had,had,left,left,Canyoudoit?,-,28,4.Hedidntgotothecinemabecausehe_(see)themovietwice.5.Bytheendoflastyear,theworkers_(build)threehighrises.6.She_(work)onthefarmforthreeyearsbeforeshebecameateacher.,hadseen,hadbuilt,hadworked,-,29,按要求改写下列句子(5/1)TomhadfinishedhishomeworkbeforehewatchedTV.否定句：疑问句：肯定回答：否定回答：,TomhadntfinishedhishomeworkbeforehewatchedTV.,HadTomfinishedhishomeworkbeforehewatchedTV?,Yes,hehad.,No,hehadnt.,-,30,句型转换(10/1)Hehadstoodupbeforehecleanedthewindow._hehadstoodup,hecleanedthewindow.HisfatherwenttoBeijing.Hearrivedhome.(用before合并句子)Hisfather_Beijingbeforehe_home.,After,hadgoneto,arrived,Questions:,1.Whatdoyouusuallydointhemorningbeforeschool?2.Doyoulikemornings?Whyorwhynot?,Whatdoyouusuallydointhemorningbeforeschool?,brushmyteeth,Whatdoyouusuallydointhemorningbeforeschool?,takeashower,Whatdoyouusuallydointhemorningbeforeschool?,haveabreakfast,Whatdoyouusuallydointhemorningbeforeschool?,gotoschool,Tinasmorning,Sheoverslept,WhathappenedtoTina?,Someonewastakingashower,Thebusleft,Shehadtoruntoschoolquickly,Sheleftherbackpackathome,RetellastoryaboutTinasmorning.,Tinahadaterriblemorningyesterday.She_.Whenshe_,herbrother_intheshower.Bythetimeshe_,thebus_Soshehadto_.Oh,dear.Whenshe_,sherealized_.,overslept,hadalreadygotten,gotoutside,hadalreadyleft,gotup,runtoschool,gottoschool,shehad,leftherbackpackathome,1b,BythetimeIgotup,mybrotheralreadyintheshower.2.BythetimeIgotoutside,thebusalready.3.WhenIgottoschool,IrealizedImybackpackathome.,gotten,had,had,had,left,left,-,44,1.I_upat6:00thismorning.(醒来)2.AfterIgottothecinema,thefilm_already.(开始)3.He_(学习)Englishfor10years.4.Bytheendoflastyear,she_(学)toswimfor3years.,灵活运用，巧手填空,woke,hadstarted,haslearned,hadlearnt,-,45,一般过去时,x,y,o,A,A点动作跟现在没任何关系,-,46,现在完成时,x,y,o,B,B为过去发生的动作，对现在造成了一定影响，或一直持续到现在。,-,47,过去完成时,C,D,x,y,o,C点（过去的过去）在D点动作之前就已经发生,-,48,1.WestartedtolearnEnglish5yearsago.,一般过去时表示在过去某时发生的动作或存在的状态。,2.WehavelearnedEnglishfor5years.,现在完成时表示的动作发生在过去，但侧重对现在产生的结果或造成的影响，与现在有关。其结构为：“助动词have（has）+过去分词”,5yearsagonow,5yearsagohavelearnednow,Revision,-,49,3.过去完成时表示在过去某个时间或动作之前已经发生或完成了的动作或存在的状态，即“过去的过去（past-in-the-past）”。,pastinthepast,past,now,-,