新概念英语第一册第120课经典PPT课件(精心整理).ppt

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1、It had already happened.,Lesson 120,事情已经发生了。,Revision:Lesson119 A true storyKey wordsexpressions,story n.故事happen v.发生thief n.贼 enter v.进入dark adj.黑暗的torch n.手电筒voice n.(说话的)声音parrot n.鹦鹉exercise book n.练习本,Revision:Lesson119 A true storyText,Revision:Lesson119 A true storyText,Revision:Lesson119 A

2、true storyText,Revision:Lesson119 A true storyExercise(Text):,Do you like stories?I want to tell you a true story.It happened to a friend of mine a year ago.While my friend,George,was reading in bed,two thieves climbed into his kitchen.After they had entered the house,they went into the dining room.

3、It was very dark,so they turned on a torch.Suddenly,they heard a voice behind them.Whats up?Whats up?someone called.The thieves dropped the torch and ran away as quickly as they could.,Revision:Lesson119 A true storyExercise(Text):,George heard the noise and came downstairs quickly.He turned on the

4、light,but he couldnt see anyone.The thieves had already gone.But Georges parrot,Henry,was still there.Whats up,George?he called.Nothing,Henry,George said and smiled.Go back to sleep.,Revision:Lesson119 A true storyGrammar:,1.First,please find out the sentences of past perfect tense from the text.Aft

5、er they had entered the house,they went into the dining room.The thieves had already gone.2.Summary:意义：结构:1）肯定式：2）否定式：3）疑问式：,Past perfect tense(过去完成时),主语+had+动词的过去分词.,主语+had not+动词的过去分词.,Had+主语+动词的过去分词?,表示一个动作在过去某一个动作或过去某一时间之前已经发生或完成。（即动作发生在过去的过去）,It had already happened.,Lesson 120,事情已经发生了。,Now ple

6、ase open your books and turn to Lesson120.Lets look at the pictures.,三、过去完成时与一般过去时的比较,二、过去完成时与现在完成时的比较,一、过去完成时,Grammar in use,一、过去完成时,1.意义：表示一个动作在过去某一个动作或过去某一时间之前已经发生或完成。（即动作发生在过去的过去）2.结构:1）肯定式：2）否定式：3）疑问式：,主语+had+动词的过去分词,主语+had not+动词的过去分词,Had+主语+动词的过去分词,3.当两个动作都发生在过去，先发生的用过去完成时，后发生的用一般过去时。when、whi

7、le、after、before等常与过去完成时连用，以强调事件发生的先后次序。,过去完成时的例句：1.The thieves had already gone when he came downstairs.2.The train had left when we arrived there.,when,After she had cleaned the blackboard,she closed the window.,1.cleaned the blackboard,2.closed the window,had cleaned the blackboard,closed the wind

8、ow,She had cleaned the blackboard before she closed the window.,after&before,1.ate an apple,2.slept,had eaten an apple,slept,She had eaten an apple before she slept.,After she had eaten an apple,she slept.,after&before,2.played ping pong,1.did his homework,played ping pong,had done his homework,He h

9、ad done his homework before he played ping pong.,After he had done his homework,he played ping pong.,after&before,当两个动作都发生在过去，先发生的用过去完成时，后发生的用一般过去时。本课当中出现before和after 引导的时间状语从句。before+一般过去时，主句用过去完成时 e.g.The film had already begun before I came back.after+过去完成时，主句用一般过去时 e.g.He left the room after he

10、had turned off the light.,Revision,4.过去完成时常与already(已经),ever（曾经）,just（刚刚）和 never（从未）,by(到),until(直到),since+过去时间点/过去时的句子，for+段时间等连用，以强调事件发生的先后次序。例如：,By the end of last year,he had worked in the factory for 10 years.The film had already been on for half an hour when Lucy got to the cinema.,Exercise,一.

11、用动词的适当形式填空:1.We _(paint)the house before we _(move)in.【翻译】_ 2.That rich old man _(make)a will before he _(die).【翻译】_ 3.After they _(study)the map of the country,they_(leave).【翻译】_ 4.When the chairman _(finish)speaking,he _(leave)the hall.【翻译】5.Tom_(have)lunch when I _(get)to their house.【翻译】_,had pa

12、inted,moved,had made,died,had studied,left,had finished,left,had had,got,二句型转换:1.I had sold the ticket when she came.（改否定句）I had not sold the ticket when she came.2.She had sung a song to us before she danced.（改否定句）She had sung a song to us before she danced.3.By 10:00 a.m,I had been very hungry.（改一

13、般疑问句并做肯定回答）Had you been very hungry by 10:00 a.m.?Yes,I had.4.Lucy had already completed the project when I arrived.（改一般疑问句并做否定回答）Had Lucy already completed the project when I arrived?No,she hadnt.,Exercise,二、过去完成时与现在完成时的比较,概念,现在完成时1.表示过去发生的动作对现在有影响；I have seen the film many times.2.表示过去某一时间开始一直延续到现

14、在的动作。He has lived here since 1949.过去完成时 表示一个动作在过去某一个动作或过去某一时间之前已经发生或完成。（即动作发生在过去的过去）By the end of last term，we had learned 1000 English words.,形式,现在完成时主语+have/has+动词的过去分词主语为三人称单数，则用“has+过去分词”She has waited here for an hour.主语为非单三，则用“have+过去分词”I have waited here for an hour.,过去完成时 主语+had+过去分词 had 可用于

15、各种人称和数 By the end of this term，we had learned 1000 English words.,二、过去完成时与现在完成时的比较,三、过去完成时与一般过去时的比较,一般过去时表示在过去某个时间发生的动作或存在的状态；而过去完成时表示在过去某一时间之前完成的动作。,1.We got to the station at 8:00,but the train had left.我们八点到达车站，但火车已开走了。2.We got to the station at 8:00,but the train left at 7:30.我们八点到达车站，但火车七点半就开走了

16、。,1._ you_ your homework yet?Yes,I _ it just now.A.Did;do;finished B.Have;done;finished C.Have;done;have finished D.Will;do;finish 2.Where is Li Lei?He _ Shanghai.A.has gone to B.has been to C.went to D.goes to3.Those foreign friends left Guangzhou _.A.since last week B.a week ago C.for a week D.sin

17、ce a week ago4.By the end of last year he_ about 1500 English words.A.learns B.learned C.was learning D.had learned5.Zhao Lan _already _in this school for two years.was;studying.will;study.has;studied.are;studying,Exercise,B,A,B,D,C,Open your books.Lets do the exercises.,Lesson 120A1 He dropped the

18、vase after he had taken it into the living room.2 He bought another car after he had sold his old one.3 He swept the floor after he had dusted everything.4 She drank the milk after she had boiled it.5 He turned off the television after he had seen the programme.6 He went to bed after he had done his

19、 homework.B1 Yes,I have just seen it.I had never seen it before.2 Yes,I have just read it.I had never read it before.3 Yes,I have just tried it.I had never tried it before.4 Yes,I have just been there.I had never been there before.5 Yes,I have just written a letter in English.I had never written a l

20、etter in English before.6 Yes,I have just watched this programme.I had never watched this programme before.,Lesson 120C1 It was too late.He had already painted it.2 It was too late.She had already dusted it.3 It was too late.You had already telephoned him.4 It was too late.You had already corrected

21、it.5 It was too late.They had already shut it.6 It was too late.She had already made it.D1 I went to the doctor after I had made an appointment.2 The boss left the office after he had finished work.3 My wife went out after she had finished the housework.4 My teacher gave me my exercise book after he had corrected it.5 My sister went on holiday after she had taken the examination.6 I bought a new car after I had sold my old one.,Thanks!,