Unit 3 Discover Useful Structures-ppt课件-（2022）新人教版(2019新版)高中英语选择性必修第二册.pptx

1、UNIT 3 FOOD AND CULTURE【版本：新人教册别：选择性必修二版本：新人教册别：选择性必修二】Discover Useful Structures目录页contentsThe Structure of the Past Perfect TenseThe Comparison between the Past Perfect Tense and the Present Perfect Tense Five Usages of the Past Perfect Tense HomeworkIIIThe Structure of the Past Perfect Tense Obse

2、rve and Discover1.The chef had set up a farm-to-table restuarant 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 had been finished by the time Sam joined them.1.The Past Perfe

3、ct Tense 过去完成时过去完成时2.第第4句有什么特别之处呢？句有什么特别之处呢？被动语态The Past Perfect Tense基本结构：基本结构：“had+过去分词过去分词”被动语态：被动语态：“had been+过去分词过去分词”基本含义：过去完成时表示在过去某一时刻已经完基本含义：过去完成时表示在过去某一时刻已经完成的动作，即成的动作，即“过去的过去过去的过去”。PastFuturehad done SummarizePresent“过去的过去”Five Usages of the Past Perfect Tense1.When the police arrived,the

4、 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的就已经完成或结束的动作。动作。had treatedcame1.Kevin had been a

5、 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).The Usage of the Tense(2)（2 2）过去某一时间的动作或状态持续到过去另一时间，有过去某一时间的动作或状态持续到过去另一时间，有时可能继续下去时可能继续下去，常与常与for，since等引导的时间状语连用。等引

6、导的时间状语连用。had worked 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 meanings and features of the following sentences?（3

7、3）常用固定句型：）常用固定句型：Hardly/Scarcely.when；No sooner.than（刚（刚就就）。否定词置于句首，需要否定词置于句首，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.)I had scarcely reached the station when the train started./Scarcely had I reached the station when the train started.2.结果刚一宣布，人们就欢呼起来

8、结果刚一宣布，人们就欢呼起来。(hardly.when.)The result had hardly been announced when the crowd applauded./The Usage of the Tense(3)即学即练 Hardly had the result been announced when the crowd applauded.1.We had intended to have a barbecue in the open air,but the weather was bad.2.I had wished _(become)a doctor,but I

9、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等动等动词的过去完成时表示词的过去完成时表示过去未实现的愿望、计划或者打过去未实现的愿望、计划或者打算算。had plannedto become The Usage of the Tense(5)1.It was the first time she _(leave)her motherland.2.It is the fi

10、rst 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 /第第次做次做此句型中，若主语中的此句型中，若主语中的be动词为动词为was,从句中的谓语则用过去从句中的谓语则用过去完成时；若主句中的

11、完成时；若主句中的be动词为动词为is,从句中的谓语则用现在完成从句中的谓语则用现在完成时。时。to packIt is high/about time that we _(do)something to stop pollution.The Usage of the Tense(5)did/should doIt is high/about time that sb did/should do sth 是该做是该做的时候了。的时候了。(should 不可省略不可省略)The Comparison between the Past Perfect Tense and the Present P

12、erfect 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。T

13、ry to compare the following two sets of sentences.Compare and Discover1.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 year.6.Tom _(finish)wri

14、ting his novel last year.have eatenhad eatenhad finishedhas finishedwill have finished finished即学即练 Practice Makes Perfect1.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-body mo

15、nkey 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 Practice Makes Perfect即学即练3.Arriving at the party hurriedly,we _(be)disappointed to find that the band _(stop)playing.4.Hardly _ he left the room when the

16、 traveler 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 Practice Makes Perfect7.Ben _(move

17、)to England with his 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 b

18、eenhad become即学即练 Practice Makes Perfect10.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 wh

19、en my parents _(run)to me and _(help)me carry my luggage.had cheatedcome kept has decidedhelped put即学即练 Practice Makes Perfectran 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

20、months.When the day came,we were ready.had beenhad plannedwent 语篇填空 Practice Makes Perfect 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

21、for the week after.I didnt understand why this would happen and my credit card _(charge)for the reservation.landed had beenwere toldhad been charged had made Practice Makes Perfect Whats worse,the hotel _(book)fully.When we _(wonder)what to do,the manager came out.She was surprisingly helpful.She ap

22、ologized for the mistake and _(give)us a spare VIP room on the top floor.We had never stayed in such an amazing room,and we _(charge)extra.were wonderinggavewerent chargedhad been booked Practice Makes Perfect 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 had been Practice Makes PerfectHomework 1.Finish Workbook P76 Exercise 1&2.2.Draw a mindmap of the Past Perfect Tense.Homework