模块2 Unit 1 Tales of the unexplained Grammar and usage(1)课件(40张PPT)

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名称 模块2 Unit 1 Tales of the unexplained Grammar and usage(1)课件(40张PPT)
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更新时间 2020-01-08 19:55:48

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课件40张PPT。Grammar and usageLook at the following sentences and try
to explain why the tense is used in these
sentences.1. We have studied English for about
five years.
2. They have lived there since 1990.
3. She hasn’t finished her homework yet.
4. Eric has just come back.
5. How long have you been here?
Present Perfect Tense现在完成时
Present Perfect Continuous Tense
现在完成进行时 1.掌握现在完成时的一般用法
2.区别现在完成时&现在完成进行时
3.区别现在完成时&一般过去时
4.掌握一些常用现在完成时的语块预习检测
一、现在完成时
1. 现在完成时的构成:(以do为例)
主动形式___________________________
被动形式___________________________has/have donehas/ have been done2. 现在完成时的用法:
(1)He has turned off the light.(2)Justin has disappeared, so Kelly is very sad.
The disappearance of Justin has made Kelly very unhappy.
(3)He has lived here since 1995.
(4)Some villagers say that they have seen UFOs many times.总结并熟记: 现在完成时的一般用法?①动作发生在过去,强调对现在的影响和结果。②动作从过去开始,且持续到现在。③表示反复发生的动作1. I _____already _______ (see) the film.
2. Grain output ________________(increase) in the past few years.
3. Great changes ______________(take) place since you left.
4. I _____________(work) here for many years.
5. My friend, who ___________(serve) on the International Olympic Committee all his life, is retiring next month.
6. I __________ (be) to Beijing twice.
have seenhave increasedhave beenhave takenhave workedhas servedWhy? 注意事项:
(1)常和完成时连用的词、词组和句型有for, since, lately, recently, before, already, ever, just, yet; in (for, during) the past few days (weeks, months), so far, up to now,till(until)now; It is the first (second) time…that…等;(2)短暂性动词come, go, arrive, reach, see, hear, close, leave, begin, start, lose, buy, close, fall, join, die, get up等可以和完成时连用,但是不能和表一段时间的时间状语连用;他三年前买了一辆车。
He has bought a car for three years. ( )
He has had a car for three years. ( )
He has bought a car. ( )
He bought a car three years ago. ( )

他两年前参了军。
He has joined the army for two years. ( )
He has been in the army for two years.( )
He has joined the army. ( )
He joined the army two years ago. ( )误正正正
误正正正一些特殊句式要用现在完成时态:It is the first time that I _______________( visit) the city. This is the first time (that) I____________( hear) him sing.have visitedhave heard结论一:It/This is the first / second time that…that 从句用现在完成时。This is the best film that I ____________(see).
This is the only book that he________ (write) .have seenhas written结论二:This is the… that…结构,that 从句要用现在完成时.It _____________(be) 3 years since I saw you.is // has been结论三: It is/ has +一段时间+since从句Don't get off the bus until it ___________(stop).
Unless you ____________________(finish) have finished your homework, I won't allow you to watch TV.has stoppedhave finished结论四:在时间、条件状语从句中,常用现在完成时代替将来完成时。二: 现在完成进行时
The Present Perfect Continuous Tense
Form:have/has + been + doingTranslation 你不累啊?你已跳了三个小时啦!Aren’t you tired?
You have been jumping for three hours.

她肯定累了,因为她一天一直在跳舞
She must be tired, for she has been
dancing all day. 2.现在完成时的构成:(以do为例) ___________________________
用法(一)has/have been doing 结论1:___________________________表示过去开始的动作一直延续到现在并仍在继续之中。用法(二)
Kelly: Sorry I’m late. Have you been waiting long?
Sally: Yes. I have been waiting for an hour.
结论2:___________________________表示过去的动作刚结束并在某种情况下与现实有关。1. —I have got a headache.
?—No wonder. You_______ in front of that computer too long. (2007江西)
?? A. work????????? B. are working????
C.have been working??D.worked2. Now that she is out of job, Lucy ___ going back to school,but she hasn’t decided yet.(北京)
had considered???????????????
B. has been considering??
C. considered??????????????????????
D. is going to consider3. —Hi, Tracy,you look pale.
? —I am tired. I ______ the living room all day.
painted??????
had painted???
C. have been painting??
?D. have painted
?课堂探究
现在完成时 &
现在完成进行时的区别现在完成时和现在完成进行时对比1. Li Jia has read a book about Stonehenge. (She has finished reading the book.)
Li Jia has been reading a book about Stonehenge. (She is still reading the book.)
2. I have visited Egypt twice this month.
I have been touring Egypt for two months.
3. How many times have you swum in the lake?
How long have you been swimming in the lake?都可以表示动作从_____发生并_______现在。
过去持续到Similarities:Differences:完成结果或影响
延续进行和目前还在进行持续进行— I’m sorry, but I don’t quite follow
you. Did you say you want to
return on September 20?
— Sorry, I _________ myself clear.
We want to return on October 20.
A. hadn’t made B. wouldn’t make
C. don’t make D. haven’t madePractice2. Every year a flood of farmers arrive in Shenzhen for the money-making jobs they ______ before leaving their hometowns.
A. promised B. were promised
C. have promised
D. have been promisedPractice3. The book has been translated into
thirty language since it ________
on the market in 1973.
A. had come B. has come
C. came D. comes
Practice4. I’m tired out. I _______ all afternoon and I don’t seem to have finished anything.
A. shopped B. have shopped
C. had shopped
D. have been shoppingPractice现在完成时&
一般过去时的区别(1) Justin disappeared last Friday night.
Justin has disappeared, so Kelly is very sad.
(2) I have seen the film.
I saw the film last week.
总结:一般过去时只表示过去发生的动作, 与现在无关; 而现在完成时则强调过去动作对现在的影响。Practice:
1. I _____ English at university for three years, but now I’ve forgot it.
A. have studied B. had studied
C. studied D. have been studying2. I _____ in London for many years, but I have never regretted my final decision to move back to China.
A. lived B. was living
C. have lived D. had lived3. —Haven’t seen you for ages. Where have you been?
—I went to Tibet and _____ (stay) there teaching English as a volunteer for three years.stayed 思考:
一般过去时用法的特点???  ①动作发生在过去,与现在没有关系。
②动作发生在过去,也结束在过去。
③表示过去一段时间内反复发生的动作。巩固提升Exercises 1. I ________(have) lunch already.
2. Has the train_______ (arrive), yet?
3.Tome ____ never_______ (be to ) China.
4. The twin ______just _____(see) my father.
5. The twins ____(see) my father just now.have hadarrivedhasbeen tohasseensaw6.We ______ (study) English for about four years.
7.We______ (live) in Houji Middle School since three months ago.
8.The old man _____________(已经死了)for two years .have studiedhave livedhas been deadCorrect the mistakesHis father has died. (for 2 years)
The football match has begun.(since9:00a.m)
The twins have joined the army. (since they are 18 years old)
My teacher has just left Nanjing. (for 3 days)
His father has been dead for 2 years.The football match has been on since 9:00 a.m.The twins have been in the army since they are 18 years old. My teacher has been away from Nanjing for 3 daysExercise1. -Mum, may I go out and play basketball?  -______you______ your homework yet?
A. Do; finish ??B. Are; finishing ??C. Did; finish ???D. Have; finished
2. -______ you ______anywhere before? -Yes, but I can't remember where I______
A. Did; surf; surfed ????????B. Have; surfed; surfed
C. Did; surf; have surfed ???D. Have; surfed; have surfed3. His brother has been to Stone Forest twice______he came to Yunnan.
 A. after ??B. before ???C. since ????D. for
4. Tom______the CD player for two weeks.
 A. has lent ???B. has borrowed ???C. has bought ????D. has had
5. I______a letter from him since he left.
 A. didn't receive ??B. haven't got ??C. didn't have ??D. haven't heard
Homework 1. Finish Part C1 and C2 on page 88 in
Workbook.
2. Review Task part.Thank you!