(共27张PPT)
Grammar -- Present Perfect Tense
语 法 -- 现在完成时
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三季度成果
四季度成果
Learning Objectives:
By the end of this lesson, you are expected to be able to:
1. grasp the form, the meaning and the usage of Present Perfect Tense; (掌握现在完成时的形式、意义和用法)
2. master some key sentence patterns related to Present Perfect Tense;(掌握一些与现在完成时相关的重要句型)
3. use Present Perfect Tense in different situations properly.
(在不同的情况下正确地使用现在完成时)
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Lead in
Choose the right option.
I has worked at home for almost a month.
I have worked at home for almost a month.
I worked at home for almost a month.
I was working at home for almost a month.
I have worked at home for almost a month.
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Lead in
They has been stuck at home for a long time.
They have been stuck at home for a long time.
They were stuck at home for a long time.
They have been stuck at home for a long time.
They had been stuck at home for a long time.
Choose the right option.
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Lead in
He has just finished his NAT.
He have just finished his NAT.
He is finishing his NAT.
He was finishing his NAT.
He has just finished his NAT.
NAT = nucleic acid test
核酸检测
Choose the right option.
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Lead in
Max has gone to bed.
Max went to bed.
Max had gone to bed.
Max has not gone to bed.
Max has not gone to bed.
Choose the right option.
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Lead in
The medical workers have left home.
The medical workers have left home for a week.
The medical workers have been away from home for a week.
The medical workers have left home.
The medical workers have been away from home for a week.
Choose the right option(s).
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Summary -- the form
The Form of Present Perfect Tense
The affirmative form (肯定形式) :
The negative form (否定形式) :
The interrogative form(疑问形式):
S + have/has + done +…
S + have not/has not + done+…
Have/Has + S + done +…
2.The Passive Voice (被动语态):
have /has +been +done
1.The Active Voice (主动语态):
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Summary -- the usage 1
How to use present perfect tense
Situation 1
We ___________________(already open) the window.
过去的动作: We opened the window.
对现在的影响: The window is open.
have already opened
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Summary -- the usage 1
How to use present perfect tense
Situation 1
The boy is tired. He ______________ (just play) a ball game.
过去的动作 : The boy played a ball game.
对现在的影响: The boy is tired.
has just played
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Summary -- the usage 1
Usuage 1: 现在完成时用法1---已完成、影响性用法
现在完成时表示动作开始于过去,结束于过去,但对现在仍有影响或造成结果。通常与表示包括现在在内的时间副词 just, already, yet, never, ever, lately, recently等状语连用。
already:用于肯定句;
yet:用于否定句和疑问句
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Exercise 1
1. I ______________(have) lunch already.
2. ________ the train _________ (arrive) yet
3.Tom ____ never_______ (be ) to China.
4.The twins ______ just _______(see) my father.
have had
Has
arrived
has
been
have
seen
Fill in the blanks using the right form of the vreb.
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Summary -- the usage 2
Situation 2
Daniel __________ (live) in Beijing
since he came to China.
past
future
now
came
live
has lived
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Summary -- the usuage 2
现在完成时强调动作或状态发生于过去一直延续到现在,且有可能继续下去(适用于延续动词); 可以和表示从过去某一时刻延续到现在的一段时间的状语连用:
1.迄今为止:so far, up till now, up to now ;
2.最近的过去:in /during the last/past years ;
3.最近:recently, lately ;
4.到这个时候:by this time;
5.从……以来: since ;
Usuage 2:现在完成时用法2---未完成,延续性
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1. We ______ (study) English for about four years.
2. We______ (live) in Yucai Middle School since 2007.
3. I _____________ (not see)Mary so far.
4. I _____________ (hear) nothing from him up to now.
5. He _____________ (not talk) with me in the past few days.
have studied
have lived
for + 时间段
since + (过去的)时间点
haven't seen
have heard
hasn’t talked
Exercise 2-1
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瞬间性动词如 arrive, join , die, get , come, buy, sell, leave, borrow, marry 等,以及终止性动词如 start, begin, finish等,在现在完成时的肯定形式中不能与 “for + 一段时间”等表示时间段的时间状语连用,但可以用在否定句或这些动词对应的状态动词中。为了表述这种意思,我们常用相应的延续性动词have, keep, be等来代替非延续性动词。
Attention !
eg. 1. He has left home.
2. He has left home for 10 years.
3. He has been away from home for 10 years.
4. He hasn't left / has stayed here for 10 years.
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瞬间性动词如 arrive, join , die, get , come, buy, sell, leave, borrow, marry 等,以及终止性动词如 start, begin, finish等,在现在完成时的肯定形式中不能与 “for + 一段时间”等表示时间段的时间状语连用,但可以用在否定句或这些动词对应的状态动词中。为了表述这种意思,我们常用相应的延续性动词have, keep, be等来代替非延续性动词。
Attention !
eg. 1. He has left home.
2. He has left home for 10 years.
3. He has been away from home for 10 years.
4. He hasn't left / has stayed here for 10 years.
常见的非延续性动词与延续性动词之间的转换:
get out - be off leave - be away(from) borrow - keep buy - have
begin/start - be on die - be dead finish - be over fall ill - be ill
get up - be up catch a cold - have a cold fall asleep - be asleep come/become/go - be in get to/arrive/reach - be(in) put on - wear
get to know - know join - be a member of
have been to (强调过去的经历):去过什么地方,即现在已经不在那个地方了;
have gone to (强调现在的状态):去某地了;即在那个地方或在去那个地方的途中。
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Choose the right answers.
1. I have joined / been in the army for ten years.
2. He has been to /gone to Dalian many times.
3. She has got married / been married to Roberts for a year.
4. He has gone / been away for two days.
5. He has had / has bought this book for a year.
√
√
√
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Exercise 2-2
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√
( ) 1. He has come here.
( ) 2. He has come here for 3 days.
( ) 3. He hasn’t come here for 3 days.
( ) 4. He has stayed here for 3 days.
( ) 5. He has been away for 3 days.
√
Right or wrong Why
√
√
Exercise 2-2
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Summary -- the usage 3
I went to Egypt in 1986.
I went to Egypt in 2004.
I __________ (be) to Egypt twice.
have been
Situation 3
Some villagers say that they __________(see) UFOs many times.
have seen
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现在完成时表示过去某一时间到现在这段期间内曾经有过一次,两次等经历或到目前为止从未有过的经历。
Usuage 3: 现在完成时用法3---经历用法
Summary -- the usage 3
eg.
Have you ever been to Japan
He has gone to London three times.
We have never been to that island.
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Extension
1. This (That/It) is the first (second…) time + that-clause (现在完成时).
This is the first time that I ___________ (see) pandas.
这是我第一次看到熊猫。
2. This (That/It) is the best/ finest /most interesting … + that-clause(现在完成时).
It is the most delicious food that I ___________(taste).
这是我吃过最美味的食物。
3. It is/ has been+时间段+since...... 自从.....以来.....(since 跟一般过去时)
It ____________ (be) over seventy years since the People's Republic of China was founded.
中华人民共和国已经成立70多年了。
have seen
have tasted
Sentence patterns related to Present Perfect Tense:
is / has been
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Review
一、现在完成时的三种用法:
1. 现在完成时表示动作开始于过去,结束于过去,但对现在仍有影响或造成结果。通常与表示包括现在在内的时间副词 just, already, yet, never, ever, lately, recently等状语连用;
2. 现在完成时强调动作或状态发生于过去一直延续到现在,且有可能继续下去(适用于延续动词),可以和表示从过去某一时刻延续到现在的一段时间的状语连用,如 so far, up till now, up to now, in /during the last/past years, recently, lately, by this time, since 等;
3. 现在完成时表示过去某一时间到现在这段期间内曾经有过一次,两次等经历或到目前为止从未有过的经历。
二、现在完成时三种固定句式:
1. This (That/It) is the first (second…) time + that-clause (现在完成时).
2. This (That/It) is the best/ finest /most interesting … + that-clause(现在完成时).
3. It is/ has been+时间段+since...... 自从.....以来.....(since 跟一般过去时)
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Fill in the blanks using the correct verb forms.
1. He ____________(teach) English for twenty years.
2. We _____________(know) each other since 1986.
3. This is the best film that I ___________(see) .
4. This is the first time that I ___________ (visit) Beijing.
5. The film ___________(be) on for ten minutes.
6. Great changes ___________(take) place in the past thirty years.
7. I ____________( hear) nothing about him up to now.
has taught
have known
have seen
has been
have visited
Exentive Practice
have taken
have heard
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Fill in the blanks using the correct verb forms.
1. The number of firms selling computers in this region ____________ (drop) since January 2012.
2. We ___________ (do) quite enough work for the morning; now let's take a break.
3. I hate moving. We____________ (have) four moves in three years.
4. The musician along with his band members ____________ (give) ten performances in the last three months.
5. I took notes during the meeting, but I ____________ (not have) a chance to write them into a report so far.
高考链接
has dropped
have done
have had
has given
haven't had
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Fill in the blanks using the correct verb forms.
6. China’s high-speed railways ___________ (grow) from 9,000 to 25,000 kilometers in the past few years.
7. During the last three decades, the number of people participating in physical fitness programs ______________ (increase) sharply.
8. The population of Jiangsu _____________ (grow) to more than twice what it was in 1949. The figure is now approaching 74 million.
9. In the last few years, China ___________ (make) great achievements in environmental protection.
10.It is the most instructive lecture that I _______________ (attend) since I came to this school.
高考链接
have grown
has increased
has grown
has made
have attended
Thank you !