Unit 1 The Changing World Topic 3 The world has changed for the better.现在完成时课件27张PPT

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名称 Unit 1 The Changing World Topic 3 The world has changed for the better.现在完成时课件27张PPT
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科目 英语
更新时间 2019-07-19 15:52:15

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课件27张PPT。现在完成时 (专项复习课) 1. I _____already ______(have).
breakfast.
2. I ______________(live) in Guangdong since 1996 .havehadhave lived 3,How long _______you _______(be) in this school?
--For three years .
4, Miss Zhou isn’t here . She ____________(go) to the library.
havebeenhas gonego went gone be was been现在完成时意义:
1.表示过去发生或已经完成的某个动作对现在造成的影响或结果。
例: We have cleaned the classroom.
I have had breakfast.
2. 表示过去开始发生的事,一直持续到现在,且仍然在进行.由for 和 since引导时间状语.
例: (1) I have lived here for 3 years.
(2) Mr. Green has worked in China since five years ago.
完成since+一段时间+ago
since+一般过去时的从句现在完成时的句型构成:
have /has + 过去分词
主语第三人称单数-has
常见的暗示词:
(1) just, already, yet, ever, never, before, for +时间, since, so far, in the past+时间, by 等.

(2)for+时间段或since+过去时间点或过去时从句连用。
(3) 与once,twice,three times,several times(几次)等表示重复次数的词语连用。
三个词组的区别:
have/has been to
have/has gone to
have/has been in
曾经去过某地去了某地,还没回来去了某地,留在某地
( )1.We_____ more than 1000 words by the end of last term.
A. have learned
B. learned
C. would learn
D. has learned

A
看谁又快又准
( )2. Mr. Smith isn’t here. He____ to India.
A. has been
B. has gone
C. went
D. has been in
B( )3. They____ in Shanghai since 1972.
A. lived
B. has lived
C. have lived
D.will liveC( )4. He____ many flowers in the past three years.
A. plant
B. will plant
C. has planted
D.have plantedC( )5. _____ you ever ____ to the USA?
A. Have, been
B. Have , gone
C. were, going
D.Do,goA 短暂性动词 buy— 买
come—来
begin/start—开始
borrow—借
die—死
leave—离开
close—关闭
fall ill—生病
join—参加
get to know— 知道
catch a cold —感冒
marry — 结婚

短暂性动词和延续性动词的转化 buy—have had
come—have been
begin/start—have been on
borrow—have kept
die—have been dead
leave—have been away from
close—have been closed
fall ill—have been ill
join—have been in/a member of
get to know— have known
catch a cold —have had a cold
marry — have been married

I bought the book three years ago.
I have had the book for three years.
I borrowed the book last week.
I have kept the book since last week.
I have kept the book for a week.
Tom joined the army half a year ago.
Tom has been in the army for half a year.
His grandpa died two years ago.
His grandpa has been dead for two years.
{{{{( )1. I ______ the Party for 5 years .
A. joined
B. have joined
C. have been in
D.will join

c
( )2. The factory ________ since 1988.
A . has been closed
B. has close
C. was closed
D. closed

A
( ) 3. How long _______ he ________ ?
A. died
B. has, died
C. has, been dead
D.dead
C
( )4. He has________ the car for a week.
A. bought
B. have
C. had
D.buyC
( )5. Since 2000, he _____ his hometown.
A. has left
B. has moved away
C. have been away from
D. has been away from D
( )6. How long _____ you _____ ill ? -----Two weeks.
A. did fall
B. have, fell
C. have, been
D. fallC
( )7. Tom is ill in hospital. He _______ a cold for several days.
A. is
B. catches
C. has caught
D. has had D
( )8. I ________the book since last week
A. have kept
B. have borrowed
C. borrowed
D. am borrowing A
现在完成时和一般过去时的区别 1. 一般过去时表示过去某时发生的动作,与现 在无关. 且常与表示过去的时间状语连用.
2. 现在完成时表示过去发生的事对现在造成的影响,可以不加时间状语;也可以用for 和 since来引导时间.
例: I saw this film yesterday.
(强调动作发生在过去)
I have seen this film.
(强调对现在的影响,电影内容已经知道了.不用接时间状语.)
I have had breakfast.
(已经饱了,无需再吃了)
I had breakfast this morning.
(强调吃早餐的时间是在早上.)
He has cleaned the classroom.
(地面现在已经干净了.)
He cleaned the classroom yesterday.
(只强调动作发生的时间是在昨天.)
It’s +时间段 + since + 一般过去时态的句子
自从….以来,已有多长时间了
It’s(has been)+一段时间+since从句(过去时)
1. It’s 10 years since he came to China.
自从他到中国以来,已经有10年了.
2. It’s three weeks since he began to learn swimming.
自从他学习游泳以来,已经有三个星期了.
Summary今天这节课你有什么收获?
请口头总结一下。
现在完成时(定义、结构和标志词)
疑难错考点及中考真题及解答技巧