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(共23张PPT)
Book 3 Unit 3 Grammar
the Present Perfect Passive
Revision on some key words
welcome to sw. 2. in addition
3. work as 4. lead to
5. be capable of 6. have been doing
7. With的复合结构 8. in terms of
9. have a desire to do 10. as well as
It’s a pleasure to do sth.
It is /was …+that /who…….
Never say never!
I guess you have been asked about the title of your book before. (P 26)
New inventions like 3D printers have been used to make replacement hearts
and bone parts. (P27)
Task 1 A Review of Knowledge
I guess someone has asked you about the title of your book before.
2. People have used new inventions like 3D printers to make replacement
hearts and bone parts.
What’s the difference between them
3. I’ve also been told that you’re an inventor yourself. (P27)
4. Nothing like this has been invented yet (P27)
Why does the author use the passive form
instead of the active form in the reading passage
To emphasize the subject of a sentence.
Can you find more such sentences in the reading passage
一、现在完成时的基本用法：
1. 表示过去发生的动作对现在的结果和影响。例如：
⑴这电影我看过多次了。
⑵他去过香港几次。
I have seen the film many times.
He has been to Hong Kong several times.
Task 2 the use of the present perfect tense
2. 表示过去发生的动作到现在为止已经完成或刚完成。
⑴我们已经学完了两个模块。
⑵现在我们把树都种完了。
We have finished two modules.
Now we have planted all the trees.
3. 现在完成时可以表示过去某一时刻发生的动作一直
延续到现在，也可能还要继续延续下去。
⑴她病了三天了。
She has been ill for three days.
⑵我们从小就认识。
We have known each other since we were children.
Task 3 time marker in the present perfect tense
由since引导的状语时，主要谓语通常要现在完成时态：since引起的状语从句中，通常用一般过去时）
⑴自从2月份我们就不得不在家学习。
We have had to study at home since February.
⑵自从毕业我就没见过他。
I haven’t seen him since graduation.
I haven’t seem him since we graduated.
2. now, already, yet, just, so far, up to now, ever,
never, in (during/over) the past/ last + some time,
Do you know more time markers
⑴In the past ten years great changes have taken
place in China.
⑵ We haven’t received the news that we can
go back to school to study.
3. This is the first time that I have donated
money to the charity.
Do you think they are correct
The old man has died for ten years.
They have got married for 2o years.
I have bought the car for ten years. e
The old man has been dead for ten years.
They have been married for 20 years.
I have had the car for ten years.
I bought the car ten years ago.
Eg: How to change the present perfect into
the passive sentences
1. We have learned many useful words so far.
Many useful words
have been learned
(by us)
主语
主语
so far
Summary:
主动态句子变为被动态时，宾语变为主语，谓语动词
由主动变为被动，其他成分不变，主动态的主语由
by引导放在句后，可以省略。
谓语
Eg:
2.The company has given him a chance to work
abroad recently.
主语
谓语
间宾
直宾
定语
He
has been given
a chance
to work abroad recently
(by the company)
Summary:
带双宾语的句子，如send, give, bring, teach, show, tell, buy,
lend, pass等，变为被动态时，一般将间接宾语变为被动态的主语，若将直接宾语变为被动态主语，间接宾语前要用相应的介词。
A chance to work abroad has been given to him
recently (by the company.)
Task 4 Change the following sentences into passive voice.
They have resolved conflicts so far.
Professor Li has persuaded him to quit smoking.
He has found a temporary job to support his
study .
4. Volunteers have made ten wells up to now to
help the African people.
Conflicts have been resolved so far.
He has been persuaded to quit smoking
by professor Li.
A temporary job has been found by him to support …
Ten wells have been made up to now to help…
5. I have asked her to help you.
6. Tom has taught us English for 10 years.
7. He has sent me an e-mail.
She has been asked to help you (by me)
We have been taught English for 10 years (by Tom.)
I have been sent an e-mail (by him.)
Task 4 Change the following sentences into passive voice.
Task 5 learn more about the present perfect passive
肯定式
否定式
一般疑问句
特殊疑问句
主语+ have/has been done…
主语+have/has not been done…
Have/ Has+ 主语+ been done…
疑问词+ have / has+ 主语+been done…
The children have already been told the good news.
改成否定句:
改为一般疑问句;
就the children进行提问;
Do more exercises
The children have not been told the good news yet.
Have the children been told the good news yet
Who has already been told the good news
1．—Is this the first time you _______ Chonqing
—No. The first time I ________ here, the city wasn’t so fascinating.
A．visited; came B．visited; have come
C．have visited; have come D．have visited; came
2．With the rapid growth of population, the city ____ in all directions in the past five years.
A．Spreads B．has spread
C．Spread D．Had spread
3．—The room is dirty.
—Sorry, It ______ for weeks and I will do it now.
A．hasn’t cleaned B．hasn’t been cleaned
C．wasn’t cleaned D．didn’t clean
Have a try!
D
B
B
4. We admire Susan for her persistence, who __________ in the rock band for 3 years so far.
A．played B．Play
C．have played D．has played
5．––Why are you buying a new refrigerator
––The old one ______ so many times that it’s
not worth it any more.
A．has repaired B．is repaired
C．has been repaired D．has been repairing
6．Great changes ________ in our school since
2016. A lot of progress ________.
A．have taken the place; have been made
B．had taken place; have been made
C．were taken place; has made
D．have taken place; has been made
D
C
D
7．—How long ______ you ______
—For five years. We ______ in 2001.
A．have; been married; got married.
B．did; marry; got married.
C．have; got married; married.
D．were; married; married.
8．The father, along with his four children,
_____Hangzhou. When they will be back
_____ fixed.
A．have gone to; isn’t B．had gone to; is not
C. went to; are not
D．has gone to; has not been
A
D
Task 5 Finish activity 2 on P29.
1. Many things have already been affected in our lives.
2. 3D-printed hamburgers have been served to
customers in some restaurants in London.
3. The most significant success have been achieved
to date is in medicine.
4. Human body parts , including a beating heart
have been made with 3D printing technology.
5. A new 3D-printed shell has been given to a turtle
injured in a forest fire.
Task 6 Look at the other passive voice
一般现在时的被动态：
一般过去时的被动态：
现在进行时的被动态：
过去进行时的被动态：
一般将来时的被动态：
过去将来时的被动态：
过去完成时的被动态;
am/is/are+ done
was/were+ done
am/is/are being done
was/were+ being done
will be done
would be done
had been done
Task 7 Are you ready for more exercises
用被动态完成下面的句子
He crticised me for not handing in the homework.
2. Mr li always tells us to be independent on ourselves.
3. This organization will donate money to the charity.
4. He had earned enough money before he went
to college.
I was criticised for not handing in the homework.
We are always told to be independent on ourselves.
Money will be donated to the charity .
Enough money had been earned before he went to college.
Summary
Grasp the present perfect passive.
Remember some time markers.
Other forms of passive.
Homework
1. Finish the paper
2. Recite the key words of unit 3.
3. Prepare for invention stories on P31.

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