【课件】Unit+3Discover+Useful+Structures+过去完成时及其被动语态课件人教版（2019）选择性必修第二册.pptx

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1、UNIT 3 FOOD AND CULTUREDiscover Useful StructuresTeaching objectives:In this class,you will1.recognize and summarize the meaning,form and use of the past perfect tense and the pastperfectpassivevoice;2.use the past perfect tense and the past perfect passive voice to describe a situation thathappened

2、inthepast.Lead in动词的变体第三人称单数过去式现在分词原形过去分词does做did做doing做do做done做eats吃ate吃eating吃eat吃eaten吃1.I _ my homework every day.我每天做作业。2.I _ my homework yesterday.我昨天做了作业。3.I _ my homework now.我现在正在做作业。do时态：一般现在时 结构：动词原形/第三人称单数did时态：一般过去时结构：动词过去式am doing时态：现在进行时结构：am/is/are+动词ing4.I _ my homework tomorrow.我明天

3、要做作业。时态：一般将来时结构：will/shall/be going to+动词原形will doQ1：什么是过去完成时？Q2：过去完成时的结构？Q3：过去完成时时间状语有哪些？Q4：隐形的过去完成时一、过去完成时Q1：什么是过去完成时？By the time the policeman got to the shop,the thief had run away.警察到商店时，小偷已经逃跑了。过去 现在 将来 过去完成时是表示过去某个时间之前已经发生的动作或一直延续的动作或状态。“过去的过去”理解“过去的过去”：过去过去的过去现在先发生的动作用过去完成时，后发生的动作用一般过去时。例：Th

4、e film had begun before we got to the cinema.我到达电影院之前电影已经开始了。had begungot Q2：过去完成时的结构？主动语态主动语态被动语态被动语态肯定形式肯定形式haddonehadbeendone否定形式否定形式hadnotdonehadnotbeendone一般疑问一般疑问句句had主语主语donehad主语主语beendone特殊疑问特殊疑问句句疑问词疑问词had主语主语done疑问词疑问词had主语主语beendoneWhenmyfamilyandIhadjustarrivedinChina,wewentlookingforag

5、oodplacetoeatinBeijing.ASichuanrestauranthadbeenrecommendedtousbyafriend,andfinally,wefoundit.观察下面句子，说出划线部分的结构类型及句中功能。观察下面句子，说出划线部分的结构类型及句中功能。划线部分是_，arrive这个动作是发生在went这个动作之前，表示过去的过去。划线部分是_，recommend这个动作是发生在found这个动作之前，而且是被动动作。过去过去完成时的主动语态完成时的主动语态过去完成时的被动语态过去完成时的被动语态1.After he _(finish)his homework,h

6、e went to bed.3.The class _(begin)when I got to school.4.The work _(finish)by us by nine o clock yesterday.5.Tom realized a mistake _(make)by her.5.He _(leave)before I got home.语法填空。had finishedhad begunhad left2.The project_(complete)by the end of 1999.had been completed had been finished had been

7、made before(连词/介词)+过去的时间点“在.之前”by+过去的时间点“到.为止”by the end of+过去的时间点“到.为止”by the time+(一般过去时)“到.为止”Q3：过去完成时时间状语有哪些？1.I _(finish)reading the novel by nine Oclock last night.2.We _(learn)over two thousand English words by the end of last term.3.They _(plant)six hundred trees before last Wednesday.4.They

8、 _(leave)before we arrived at the school.5.Breakfast _(serve)by the time I got up.Examples and Exerciseshad finishedhad learnedhad plantedhad lefthad been serveduMy father asked me if I had finished reading that book.uThe lady showed me the pictures she had painted.uI began the work after he had gon

9、e.1.在 told，said，knew，heard，thought 等动词后的宾语从句,主句为过去时，从句动作发生在主句之前，用过去完成时。Q4：隐形的过去完成时2.常用常用hope,expect,suppose,think,want,wish等动词的等动词的过去完成时表示过去完成时表示过去未实现的愿望、计划或者打算过去未实现的愿望、计划或者打算。例例：We had intended to have a barbecue in the open air户外户外,but the weather was bad.典例4 1.I had wished _(become)a doctor,but I

10、 studied law at college.2.They _(plan)to see us off at the airport.to become had plannedHardly/Scarcely/Seldom/merely.when；No sooner.than 一一.就就否定词置于句首否定词置于句首，需要，需要部分倒装部分倒装。主句用。主句用过去完成时过去完成时，从句，从句用用一般过去时一般过去时。3.用于一些固定句型：用于一些固定句型：1.Hardly had we sat down to supper when the phone rang.2.Scarcely had th

11、e votes been counted,when the telephone rang.3.No sooner had I walked out than I remembered that I forgot my homework.典例31.我刚到车站，火车就开了。(scarcely.when.)2.结果刚一宣布，人们就欢呼起来。(hardly.when.)Scarcely had I reached the station when the train started.I had scarcely reached the station when the train started.Ha

12、rdly had the result been announced when the crowd applauded.It/This/That was the first/second time(that)主主+had done这是这是/那是某人第一那是某人第一/第二次第二次/第第次做次做It was the first time she had left her motherland.It was the+形容词最高级形容词最高级+名词名词+(that)主主+had doneIt was the most inspiring performance(that)I had watched.典

13、例5 1.It was the first time she _(leave)her motherland.2.It is the first time(that)I _(speak)in public.3.This _(be)the first time I had seen Dad so furious狂怒的.4.It is time for us _(pack)up and leave.5.变It is time we _(pack)up and leave.6.变It was the best coffee I _(taste).had left have spokenwas to p

14、ackhad tastedshould pack/packedisishashave3.用于一些固定句型：用于一些固定句型：1)用于用于wish后的宾语从句中，表示对后的宾语从句中，表示对过去未做成过去未做成的事情的的事情的某种感某种感叹或愿望叹或愿望。如：。如：IwishI(be)thereatthattime.那时候我要在那儿就好了。（事实上我不在那儿。）那时候我要在那儿就好了。（事实上我不在那儿。）IwishI(tell)himaboutit.我要是我要是没没告诉他那事就好了。（事实上我告诉他告诉他那事就好了。（事实上我告诉他了了。）。）had beenhad not told2)用于用

15、于对对过去事实过去事实进行进行虚拟的条件句虚拟的条件句中。如：中。如：IfIhadhurried,Iwouldnthavemissedthetrain.如果我快点的话，我就不会误了火车。如果我快点的话，我就不会误了火车。Ifyouhadbeenattheparty,youwouldhavemethim.如果你去了晚会，你就会见到他的。如果你去了晚会，你就会见到他的。Hardly(1)_I_(get)up this morning when I had a strange feeling that it wasnt going to be my day.I(2)_(intend)to have

16、a big breakfast,but I had no time.I got up so late that I had to hurry to the bus stop to catch my bus.Unfortunately,I(3)_ (step)on a banana peel and fell on my backside.Whats worse,by the time I got to the bus stop,the bus(4)_(leave).I had no choice but to run.It was the first time that I(5)_(run)t

17、o school.When I got to the classroom,I suddenly realized that it was Sunday.It is the worst day that I(6)_(have)in the past few years.Completethefollowingpassage.hadgothadintendedsteppedhadrunhadlefthavehadConsolidation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-playedb)以 e 结尾的动词直接加 d use-used refuse-refusedc)以辅音字母加 y 结尾的动词，把 y 改 i 再加 edstudy-studiedcarry-carriedd)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 edstop-stoppeddrop-dropped2.不规则动词的变化见不规则动词表P122-123过去完成时的构成过去完成时的构成：由助动词：由助动词had+动词的过去分词（动词的过去分词（V.pp)THANKS