Unit 7 Teenagers should be allowed to choose their ...(Grammar Focus-4c)课件 (共18张PPT)

(共18张PPT)
Unit 7
Teenagers should be allowed to choose their own clothes.
Grammar Focus-4c
What can you do at school
What can’t you do at school
Do you agree or disagree
Free talk
将下列句子改为被动句。
1. He cleans his bedroom every day.
His bedroom is cleaned by him every day.
2. I bought a book yesterday.
A book was bought by me yesterday.
3. Our parents advised us not to go out alone.
We were advised not to go out alone by our parents.
4. I see no student in the playground.
His bedroom should be cleaned in the morning.
Review
主动句变为被动句4步骤：
1. 主句宾变被句主 2. 主句谓语变被动(be+过去分词)
3. 主句主变by加宾 4. 其它成分都不变(定语、状语)
I don’t think sixteen-year-olds should be allowed to drive. I agree. They aren’t serious enough.
Do you think teenagers should be encouraged to make their own decisions No, I don’t agree with this. Teenagers are too young to make their own decisions.
Teenagers should not be allowed to have part-time jobs. I disagree. They can learn a lot from working.
Do you think we may be allowed to take photos if we don’t use a flash If you don’t use a flash, then it may be OK.
Grammar Focus
语法重点:含情态动词的被动语态
定义
含情态动词的被动语态用来说明某个被动性动作所反映出的感情和态度。
初中阶段的常见情态动词有：
含情态动词的被动语态的构成是：
can, could (能；会), may; might (可以)
must(必须), should(应该), will; would(愿意)
have to(必须；不得不), had better(最好)
情态动词+be+过去分词
含有情态动词的被动语态
句式结构
肯定句:
主语+情态动词+be+动词过去分词+其他.
否定句:
主语+情态动词+be +not +动词过去分词+其他.
一般疑问句
及回答:
情态动词+主语+be+动词过去分词+其他
肯定回答：Yes, 主语+情态动词.
否定回答：No, 主语+情态动词+not.
特殊疑问句:
特殊疑问词+情态动词+主语+be+动词过去分词+其他
Teenagers ________________ to choose their own clothes.
应该允许青少年选择他们自己的服装。
Students ___________________ to have part-time jobs.
不应该允许学生们做兼职工作。
_____ these books _________ out of the reading room
可以把这些书带出阅览室吗？
When ______ the work __________
这些工作必须什么时候完成？
Practice 1
should be allowed
should not be allowed
Can
be taken
must
be finished
1. You should finish your homework first.
Your homework should be finished (by you) first.
2. You can take this magazine home.
This magazine can be taken home (by you).
3. I must finish this task at once.
This task must be finished (by me) at once.
4. My mother has to clean the room everyday.
The room has to be cleaned by my mother everyday.
5. We can't repair this car.
This car can't be repaired (by us).
Practice 2
将下列句子改为含有情态动词的被动语态。
单项选择。
1. If you are over 18 years old, you ____ to drive a
car in our country.
A. can allow B. can’t allow C. can be allowed
2. — Tom is always careless with his school work.
Could you help him
— No problem! I think he ____ to think twice before
starting.
A. should be told B. shouldn’t be told C. should tell
3. In summer, fruit and meat ____ long.
A. can’t be kept B. don’t keep C. is not kept
4. All the mobile phones should ____ during the examination.
A. turn off B. be turned off C. be turning off
Practice 3
Rewrite the sentences according to the example.
4a
1. You must clean your bedroom every day.
Your bedroom must be cleaned every day.
2. I will the housework in the afternoon.
The housework _______________________________.
3. Parents will encourage their children to do social work for their community.
Children ____________________________________
___________________________________
will be encouraged (by their parents) to do
social work for their community.
will be done in the afternoon.
4. Do you think we must keep teenagers away from
the Internet
Do you think teenagers________________________
________________________
5. Parents should give teenagers chances to make their
own decisions.
Teenagers___________________________________
___________________________________
must be kept away from
the Internet (by us)
should be given chances to make their own decisions (by their parents).
Fill in the blanks with the correct forms of the words in brackets.
4b
Should teenagers __________ (ask) to move out when they start working In many Western countries, teenagers ____________ (allow) to move out at eighteen. Their parents believe that they should be educated to take care of themselves from a young age. This way, when they ________ (start) working they can manage their own lives. However, in most Asian societies, it is not common for teenagers to ______ (move) out. Chinese parents believe that it is better for children to live with parents who can __________ (take) care of them. But the young should then look after their parents as they get older. That is why many Chinese adults __________ (continue) to live with their parents.
be asked
are allowed
start
move
take
continue
You and your friend are starting an English
club. Make a list of rules about what should
and should not be allowed.
4c
Group work
A: Members should be allowed to
use dictionaries.
B: Yes, but they should only use
English-English dictionaries.
A: Members shouldn’t be allowed to speak Chinese.
B: I agree. Only in this way can you improve your
English.
Sample Dialogue
1. Today a lot of information can _______ online.
A. receive B. be received C. is received D. receiving
2. — Must we clean the classroom now
— No, you needn’t. It ______ after school.
A. may clean B. must clean C. need be cleaned D. can be cleaned
3. The song reminds me of my old school days as soon as it ______.
A. is played B. plays C. will be played D. will play
4.—Have you finished your project
—Not yet. I’ll finish it if I _______ ten more minutes.
A. give B. am given C. will give D. will be given
5. He _____ late to watch the football match till midnight, so he is sleepy today.
A. woke up B. stayed up C. put up D. got up
一、单项选择。
Exercise
1. I think one day books may __________ (replace) by computers.
2. Paper should not __________ (throw) away.
3. Books and CDs can ____________ (borrow) from the library.
4. More man-made satellites must _________ (send) up into space.
5. The sun and its planets _________ (call) the solar system.
6. The work should _______ (do) at once.
be replaced
be thrown
be borrowed
二、用所给动词的正确形式填空。
be sent
are called
be done
三、翻译下列句子。
1. 需要好好地教育青少年。
_________________________________
2. 这辆小汽车不能修了。
_________________________________
3. 这封信必须现在寄出去吗？
_________________________________
4. 会议应该在哪举行？
_________________________________
Teenagers need to be educated well.
This car can’t be repaired.
Must this letter be posted now
Where should the meeting be held
1. You should make up the bed every day. (改为被动
语态)
The bed _______ _______ _______ up every day.
2. We can’t see stars in the daytime. (改为被动语态)
Stars _______ _______ _______ in the daytime.
3. You must return the book on time. (改为被动语态的
一般疑问句形式)
_______ the book ______ ________ on time
should be made
can’t be seen
Must
be returned
四、句型转换。