精品课新人教选 B2U3 Discovering Useful Structures.pptx

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1、本课件已在中国版权保护中心登记作品著作权，本课件已在中国版权保护中心登记作品著作权，未经许可，禁止商用、分享、转载！未经许可，禁止商用、分享、转载！版权提示【版本：人教册别：选必二】Discovering useful structures UNIT 3 FOOD AND CULTUREcontentsThe Structure of the Past Perfect TenseThe Comparison between the Past Perfect Tense and the Present Perfect Tense Five Usages of the Past Perfect T

2、ense HomeworkIIIThe Structure of the Past Perfect Tense Observe and Discover1.The chef had set up a farm-to-table restaurant before his new cookbook was published.2.They had finished their dinner by the time Sam joined them.3.Most of the guests had left when he arrived at the party.4.Their dinner ha

3、d been finished by the time Sam joined them.l The Past Perfect Tense 过去完成时过去完成时l第第4句有什么特别之处呢？句有什么特别之处呢？被被动语态基本基本结构结构：“had+过去分词过去分词”被动被动语态语态：“had been+过去分词过去分词”基本含义基本含义：过去完成时表示在过去某一时刻已经：过去完成时表示在过去某一时刻已经完完 成成的动作，即的动作，即“过去的过去过去的过去”。PastFuturehad donePresent“过去的过去”The Past Perfect TenseFive Usages of th

4、e Past Perfect Tense1.When the police arrived,the thief had run away.2.Before he volunteered to direct the traffic,Tom had lost lots of jobs.3.He hadnt finished it by yesterday evening.4.By the end of June,they _(treat)over 800 patients.The Usage of the Tense(1)（1 1）表示表示过去某时或某动作之前过去某时或某动作之前就已经完成或结束就

5、已经完成或结束的动作。的动作。had treated1.Kevin had been a newspaper reporter for two years before he became a businessman.2.He said he _(work)in that factory since 1949.3.I had been at the bus stop for 20 minutes when a bus finally _(come).came（2 2）过去过去某一时间的动作或状态持续到过去另一时某一时间的动作或状态持续到过去另一时间，有时可能继续下去间，有时可能继续下去，常与常

6、与for，since等引导的时等引导的时间状语间状语连用。连用。had worked The Usage of the Tense(2)1.Scarcely had the votes been counted,when the telephone rang.2.No sooner had I walked out than I remembered that I forgot my homework.3.Hardly had we sat down to supper when the phone rang.The Usage of the Tense(3)What are the mean

7、ings and features of the following sentences?（3 3）常用固定句型）常用固定句型：（刚（刚就就）Hardly/Scarcely.when；No sooner.than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，从句用，从句用一般过去时一般过去时。1.我刚到车站，火车就开了。我刚到车站，火车就开了。(scarcely.when.)The Usage of the Tense(3)即学即练Hardly had the result been announced when the crowd applaud

8、ed.The result had hardly been announced when the crowd applauded.I had scarcely reached the station when the train started.2.结果刚一宣布，人们就欢呼起来结果刚一宣布，人们就欢呼起来。(hardly.when.)/Scarcely had I reached the station when the train started.1.We had intended to have a barbecue in the open air,but the weather was

9、bad.2.I had wished _(become)a doctor,but I studied law at college.3.They _(plan)to see us off at the airport.The Usage of the Tense(4)（4 4）常用）常用hope,expect,suppose,think,want,wish等动词等动词的过去完成时表示的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。had plannedto become The Usage of the Tense(5)1.It was the first tim

10、e 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.had left have spokenwas（5 5）It/This/That was the first/second.time(+that)这这是是 /那是某人第一那是某人第一 /第二次第二次 /第第次做次做此句型中，若主语中的此句型中，若主语

11、中的be动词为动词为was,从句从句中的谓语则用中的谓语则用过去完成时过去完成时；若主句中的若主句中的be动词为动词为is,从句中的谓语则用从句中的谓语则用现在完成时现在完成时。to packlIt is high/about time that we _(do)something to stop pollution.did/should doIt is high/about time that sb did/should do sth 是是该做该做的时候的时候了了 (should 不可省略不可省略)The Usage of the Tense(5)The Comparison between

12、 the Past Perfect Tense and the Present Perfect Tense 1.Tom has eaten his supper.2.Tom had eaten his supper in the canteen before he went back home.1.The family have not finished breakfast.2.The family were still at table,but they had finished breakfast.现在完成时强调现在完成时强调过去的动作对现在的影响过去的动作对现在的影响；过去完成时强调过去

13、完成时强调动作或状态开始于过去，也结束于过去动作或状态开始于过去，也结束于过去。Try to compare the following two sets of sentences.1.I _(eat)lots of cakes so far.2.I _(eat)lots of cakes till then.3.Tom _(finish)writing his novel by the end of last year.4.Tom _(finish)writing his novel.5.Tom _(finish)writing his novel by the end of next ye

14、ar.6.Tom _(finish)writing his novel last year.have eatenhad eatenhad finishedhas finishedwill have finished finished即学即练 Practice1.Since our twins began learning to walk,my wife and I _(keep)telling them that our sliding glass door is just a window.(2020 全国卷)2.Instead,one activist,dressed in a full-

15、body monkey suit,_(arrive)before other activists with a sign praising the filmmakers:“Thanks for not using real apes(猿)!”(2020 全国卷改)have kepthad arrived即学即练 Practice3.Arriving at the party hurriedly,we _(be)disappointed to find that the band _(stop)playing.4.Hardly _ he left the room when the travel

16、er entered.5.Ehlers called the number of Jeff and Lisa to tell them that their dog _(find).(2019 全国卷改)6.Last winter,when I _(go)there again,they _(have)a big separate house to raise dozens of chickens.(2018 全国卷)had stopped were had had been foundwent had即学即练 Practice7.Ben _(move)to England with his

17、mum when he was three and it _(be)13 years since I had last seen him.(2018 全国卷)8.This is the first time he _(confront)an armed robber.9.Millions of years ago,dinosaurs roamed(漫步)the earth,but they _(become)extinct by the time humankind first appeared.has confrontedhad movedhad beenhad become即学即练 Pra

18、ctice10.Mary,when questioned why she _(cheat)in the exam,just lowered her head and _(keep)silent.11.Since then,Ricky _(decide)to become a“Maximum Efficiency Boy”,and _(put)real care into how he treated his things.12.Hardly had I _(come)out of the railway station when my parents _(run)to me and _(hel

19、p)me carry my luggage.had cheatedcome kept has decidedhelped putran即学即练 Practice Last year,my brother and I _(go)to Miami for a vacation.Some of my friends who _(be)there before said it was a wonderful holiday destination.Before we went,we _(plan)for months.When the day came,we were ready.had beenha

20、d plannedwent 语篇填空 After our plane _(land),we went to the hotel.We _(make)our reservation six months earlier,but the man at the front desk said there _(be)a mistake.We _(tell)that our rooms hadnt been reserved for that week,but for the week after.I didnt understand why this would happen and my credi

21、t card _(charge)for the reservation.landed had made had beenwere toldhad been charged Practice Whats worse,the hotel _(book)fully.When we _(wonder)what to do,the manager came out.She was surprisingly helpful.She apologized for the mistake and _(give)us a spare VIP room on the top floor.We had never

22、stayed in such an amazing room,and we _(charge)extra.were wonderinggavewerent chargedhad been booked The next day,my brother and I went to the beach where we _(watch)some people play volleyball.We got a little sunburnt,but the day _(be)so relaxing that we didnt mind.watched was PracticeHomework 1.Finish Workbook P76 Exercise 1&2.2.Draw a mindmap of the Past Perfect Tense.THANKS