资源简介

(共22张PPT)
Unit 7
Teenagers should be allowed to choose their own clothes.
Section A
Grammar Focus-4c
Learning objects
By the end of the class, you will be able to …
1. Grasp the key words and sentence patterns.
2. Use the passive voice to talk about what you are
allowed and aren’t allowed to do.
Transfer the sentences’ voice to the passive voice.
1. He cleans his bedroom every day.
His bedroom is cleaned by him every day.
2. He cleaned his bedroom yesterday.
His bedroom was cleaned by him yesterday.
3. He should clean his bedroom in the morning.
His bedroom should be cleaned in the morning.
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
同意（某人的意见、观点等）
含有情态动词的被动语态
1. 含有情态动词的被动语态的句式结构
肯定句：
主语+情态动词+be+及物动词的过去分词+其他.
否定句：
主语+情态动词+not+be+及物动词的过去分词+其他.
一般疑问句及答语：
情态动词+主语+be+及物动词的过去分词+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.
特殊疑问词+情态动词+主语+be+及物动词的过去分词+其他
特殊疑问句：
(1)主动句中的宾语变为被动句中的主语;
(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)主动句中的主语变为介词by 的宾语, by 短
语常可省略。
2.含有情态动词的主动句变为被动句时,主要遵
循如下三点:
主动句：We should complete the work today.
被动句：The work should be completed(by us) today.
示例如下：
主语
谓语
宾语
一、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 D. aren’t keeping
4. All the mobile phones should ____ during the
examination.
A. turn off B. be turned off
C. be turning off D. turned off
二、按要求完成句子，每空一词。
1. These glass cups and bowls must be put in a
safe place.(改为主动语态)
We ______ ______ these glass cups and bowls
in a safe place.
2. Mr. Smith can translate this novel into English.
(改为被动语态)
This novel ____ ___ _________ into English
by Mr. Smith.
must
put
can
be
translated
3. The question should be discussed again.
(改为否定句)
The question ________ ____ discussed again.
4. The happy life could be created by hard work.
(改为一般疑问句，并作肯定回答)
— ______ the happy life ______ ______ by
hard work
— ____, it ______.
shouldn’t
be
Could
be
created
Yes
can
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 do the housework in the afternoon.
The housework will be done in the afternoon.
3. Parents will encourage their children to do
social work for their community.
Children _______________________________
_______________________________________.
for their community (by their parents)
will be encouraged to do social work
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
should be given chances to make their
the Internet (by us)
own decisions (by their parents)
keep... away from 避免接近；远离
make one’s own decision 自己做决定
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.
be asked
are allowed
start
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.
move
take
continue
Brainstorm
What do you always do in an English club
act out English plays
listen to English lecture
sing English songs
watch English movies
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.
Summary
The different sentence structures of the passive voice with modal verbs.
Use the sentence structures to talk about rules.
Homework
Review the Grammar Focus.
Use the sentence patterns in Grammar Focus to write down the rules in your school.
Do the exercises.

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