Unit 7 Teenagers should be allowed to choose their own clothes.Section A课件(共23张PPT)

(共23张PPT)
Grammar Focus
Unit 7 Teenagers should be allowed to choose their own clothes.
Review
主动语态：表示主语和谓语之间是_________关系
被动语态：表示主语和谓语之间是_________关系
英语的语态是通过动词形式的变化表现出来的。
英语中有两种语态：主动语态和被动语态。
We clean the classroom every day.
The classroom is cleaned by us every day .
主动
被动
被动语态的谓语动词结构为：
be + 动词的过去分词
be 有时态和人称的变化
She waters flowers every day.
Thomas Edison invented the electric bulb.
We should clean the classroom every day.
母亲节每年都被我们庆祝。
母亲节去年被我们庆祝。
我们已经学过：一般现在时的被动语态
一般过去时的被动语态
Mother's Day is celebrated by us every year.
Mother's Day was celebrated by us last year.
一般现在时的被动语态
is/are + 动词过去分词
一般过去时的被动语态
was/were + 动词过去分词
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
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
Teenagers should not be allowed to have part-time jobs.
No, I don’t agree with this. Teenagers are too young to make their own decisions.
I disagree. They can learn a lot from working.
If you don’t use a flash, then it may be OK.
Do you think we may be allowed to take photos if we don’t use a flash
Can you find the passive voice from this form
What else can you find
含有情态动词的被动语态
情态动词+ be + 动词过去分词
情态动词
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.情态动词后动词变回原形。
含情态动词
的被动语态
句子结构
翻译：
否定句:
一般疑问句
青少年们应该被允许选择自己的衣服。
Teenagers should be allowed to choose their own clothes.
Teenagers should not be allowed to choose their own clothes.
Should teenagers be allowed to choose their own clothes
含情态动词
的被动语态
易错点
易错点一：
表达否定时，“not”接在情态动词后。
Paper and water wasted by people.
A. will be not B. will not be
C. should be not D. should not be
2. In 2050, 2G used in the world.
A. will be not B. will not be
C. should be not D. should not be
易错点二：
判断下列句子是否正确？正确（T）错误（F）
情态动词 + 主语 + be + done + 其他内容
疑问句中， 情态动词后紧跟主语。
Should classroom be cleaned by students
Must be my room cleaned by myself now
Should be food wasted by people
Can the homework be finished tomorrow
Can be moon seen at night
T
F
F
T
F
被动语态的
注意事项
注意事项一：
The little dog must be looked after well.
那只小狗必须得到很好的照顾。
一些动词短语用被动语态时，动词短语应视为
一个整体，而不能丢掉其中的介词或副词。
_______________________________________
注意事项二：
I often see the old man run in the morning.
→ The old man is often seen to run in the morning.
我经常看见那个老人早晨跑步。
make，see，watch，hear，notice，feel等使役
动词和感官动词在主动语态中与省略to的动词不定式连用，但变为被动语态后，必须加上to。
注意事项三：
The pears taste nice.
那些梨味道很好。
look, sound, taste, smell等系动词
用主动结构表被动意义。
__________________
注意事项四：
The book sells well.
这本书卖得很好。
不及物动词与状语连用，用以表示主语的品质和状态。常见的此类动词：
cut，sell，read，write，fill，cook，lock，wash，drive，keep等。
__________________
3. Parents will encourage their children to do social work for their
community.
Children ________________________________________________.
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 ________________________________________________.
4a
Rewrite the sentences according to the example.
will be encouraged to do social work for their community
must be kept away from the Internet
should be given chances to make their own decisions
作社会活动
keep away from 远离
give/have a chance to do sth
给某人一个做某事的机会
4、一般将来时的被动语态：
will / is going to + be + 动词的过去分词
艺术与科技展览会将在下个月举行。
The art and science fair ____ ___ _____
next month.
will be held
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 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.
Fill in the blanks with the correct forms of the words in brackets.
be asked
are allowed
be educated
start
move
take
continue
搬出去
照顾
管理自己的生活
...是不常见的
继续做某事
What‘s the passage mainly about
Tenagers should move out or not when they start working,there are different opinions between Western countries and Asian countries.
导学案 第三课时