人教版九年级全册Unit 7 Teenagers should be allowed to choose their own clothes. Section A Grammar Focus-4c 课

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Unit 7 Teenagers should be allowed to choose their own clothes.
Section A Grammar Focus
Revision
1. 陪伴在某人身旁 stay by one’s side
2. 确保 make sure + 句子
3. 使某人远离某物 keep sb. from sth.
4. 给某人一个拥抱 give sb. a hug
5. 举起某人 lift sb.up
6. 顶嘴 talk/shout back
7. 十点前回来 be back by ten
8. 回想起 think back to
9. 迟到 be late for
10. 待在外面 stay out
11. 后悔做某事 regret doing sth.
被动语态
(passive voice)
一般现在时的被动语态
含有情态动词的被动语态
一般过去时的被动语态
am/is/are+动词的过去分词
was/were+动词的过去分词
Review

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 some photos if we don't use a flash If you don't use a flash, then it may be OK.
Grammar Focus
含有情态动词的被动语态
情态动词+ be + 动词过去分词
can/
could
may/
might
will/
would
shall/
should
must
ought
to
1.情态动词无时态和
人称的变化；
2.情态动词后接动词
原形。
情态
动词
1. 一般现在时被动语态的各种句式结构：
被动不离“ be” “p.p.”, “p.p.” 前面助动 be 。
主谓一致莫忘记， am, is, are 现在时。
肯定式
主语+am/is/are+过去分词（ + by…)
否定式
主语+am/is/are + not +过去分词 (+by…)
疑问式
Am/Is/Are+主语+过去分词(+ by …)
特殊疑问词+ am/is/are+主语+过去分词（+ by ...)
注意: ①含情态动词的被动语态的一般疑问句的回答，应保留原情态动词，但must表“必须”时，其否定回答应用needn’t；need表“必要”时，其肯定回答应用must。如：
— Must my exercise book be handed in now 我的练习本必须现在上交吗？
— Yes, it must. 是的，必须现在上交。
（No, it needn’t. 不，不必现在上交。）
---Need the laundry be done by me /Need I do the laundry ---Yes, you must.
Grammar
否定句：在情态动词后面加上not或never即可，但must表“必要”时否定式为needn’t。
eg:This task needn’t be finished at once.这项任务没必要立即完成。
③反意疑问句：借助情态动词构成附加疑问部分。如：
eg:This bridge can be built next year, can’t it 这座桥明年能建成，是吗？
2. 一般现在时被动语态的基本用法
用法
示例
表示经常性或习惯性发生的被动动作
表示近期正在发生的被动动作
描述某种常态化的被动的客观事实
强调目前存在的针对行为主体人的被限制性动作
I am often asked the question by my pupils.
The spaceship is mainly controlled by computer.
These days people are moved by a teacher named Zhang Lili.
You aren’t allowed to take photos.
一般疑问句结构：
My homework
should
be done
your homework
Should
(by me)
every day.
(by you)

Do an exercise
Asking questions can be allowed during class.
Can asking questions be allowed during class
情态动词+主语+be done+其它
Grammar Focus
3. 主动语态变为被动语态的方法
第一步 : 将主动语态的 宾语 改为 被动语态的 主语 ；
第二步 : 将主动语态的 谓语 改为 “ be+过去分词 ”结构 ；
第三步 : 将主动语态的 主语 改为 介词by的宾语 ，放在 谓语之后 ( 有时可省略 ) 。
They ( 主语 ） grow ( 谓语） tea ( 宾语） in the south-east of China.
Tea ( 主语） is grown ( 谓语） by them in the south-east of China.
含有情态动词的主动句与被动句之间的转换:
主动句： We should complete the work today .
被动句： The work should be completed ( by us ) today .
主语 谓语 宾语
主语 谓语 介词+ 宾语
Grammar Focus
含有情态动词的主动句变为被动句时，有如下步骤：
（1）把主动句的宾语变为被动句的主语；
（2）主动句中的谓语变为“情态动词 + be + 及物动词的过去分词”；
（3）主动句的主语在被动句中变为by的宾语；
（4）其他成分不变。
主动句：We should plant trees in spring.
被动句：Trees should be planted in spring.
含有情态动词的主动句与被动句之间的转换
3、情态动词的被动语态：
情态动词 + be + 动词的过去分词
青少年应该被允许选择自己的服装。
Teenagers _______ ___ ________to choose their own clothes.
should be allowed
结构:
肯定： 情态动词 + be + 动词的过去分词
否定： 情态动词 +not+ be + 动词的过去分词
一般疑问句： 情态动词 + 主语 +be+ 动词的过去分词？
特殊疑问句： 疑问词 + 情态动词 + 主语 +be+ 动词的过去分词？
一般现在时的被动语态
一般过去时的被动语态
含情态动词的被动语态
am / is /are +过去分词
was / were +过去分词
情态动词+be+过去分词
My bedroom is cleaned every day.
My bedroom was cleaned yesterday.
My bedroom must be cleaned every day.
You must clean your bedroom every day.
Your bedroom must be cleaned every day.
2. I will do the housework in the afternoon.
The housework will be done in the afternoon.
3. Parents should encourage their children to do social work for their community.
Children_____________________________________
______________.
should be encouraged to do social work for
their community
一般将来时的被动结构：
will+be+及物动词
的过去分词
let’s read
Read 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 do the housework in the afternoon.
The housework will be done in the afternoon.
Rewrite the sentences according to the example.
4a
Grammar Focus
Fill in the blanks with the correct forms of the words in brackets.
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.
4b
be asked
are allowed
start
move
take
continue
manage v. 完成（困难的事）manage to do 设法做某事
Practice
v. 继续
动词变形：什么时态？主动？被动？
4c You and your friend are starting an English club. Make a list of rules about what should and should not be allowed.
A: Members should be allowed to use dictionaries.
B: Yes, but they should only use English-English dictionaries.
Are there any other rules about what should and what should not be allowed in the English club Can you tell us
You and your friend are starting an English club. Make a list of rules about what should and should not be allowed.
4c
Members should be allowed to use dictionaries.
Yes, but they should only use English-English dictionaries.
You and your friend are starting an English club. Make a list of rules about what should and should not be allowed.
4c
Members shouldn’t be allowed to speak Chinese.
I agree. Only in this way can you improve your English.
1. We learned how to express agreement and disagreement.
I agree.
I agree with this.
I agree/think that … because …
I think so.
I disagree.
I don’t agree with this.
I don’t agree/think that … because …
I don’t think so.
Summary
1. Parents should give teenagers chances to make their own decisions.
父母应该给青少年自己做决定的机会 。
chance 可数名词，意为 “ 机会；机遇 ” ，
chance to do sth. 或 chance of sth. 做某事的机会
chance for sb. to do sth. “做某事对某人来说是一次机会”
例： I never miss a chance to play football.
我从不错过踢球的机会。
It’s a good chance for you to meet .
这是一个你们见面的好机会。
2. This way, when they _______(start) working they can manage their own lives.
这样，当他们开始工作时，他们能应付他们自己的生活。
manage 意为 “完成 ( 困难的事 ); 应付 ( 困难 ) 局面” ， 其后可接名词、代词或动词不定式。
例： I’m not sure how we will manage it .
我不确信我们将如何完成这件事。
You should manage to finish the work in time.
你应该设法及时完成工作。
选择题
The stars _____ in the daytime.
A. can seen B. can not seen C. can not be seen
2. Water ________ in everyday life.
A. shouldn’t be wasted B shouldn’t waste C. shouldn’t wasted
3 .Trees ____________ in winter but in spring.
A．can not plant B．be not planted
C．can not be planted D．can plant
C
A
C
选择题
4. --- Do you believe there are aliens
--- I'm afraid not. I don't think aliens in space.
A. can find B. can be found
C. can be founded D. can't be found
5. Nick a job in a bank, but to our surprise, he didn't take it
A. is offered B. offered C. was offered D. has offered
6. He is very surprised that all the houses in the village _______white.
A. paint B. painted C. are painting D. are painted
A
C
D
用所给词的正确形式填空：
Teenagers should be _________ (allow) to choose their clothes.
2. Sixteen-year-olds _____ (be) not allowed to drive.
3. He should stop _________ (wear) those silly earrings.
4. Young people need ________ (sleep) about 8 hours at least.
Exercises
is
allowed
to sleep
wearing
5. We should pass the test instead of _________ (fail) the test.
6. We have a lot of _______ (rule) at school.
7. I think your father ____ (be) strict with you!
8. You have to ______ (be) 18 before you are allowed to drive.
failing
be
is
rules
Homework
1. Remember the new words and expressions
in 4c.
2. Review the passage in 3a on page 51.