人教九年级Unit 7 Grammar+4a&4b（课件）

(共10张PPT)
我们已经学习了一般现在时的被动语态和一般过去时的被动语态，它们的结构为：
时态 被动语态结构
一般现在时 am/is/are + 及物动词的过去分词
一般过去时 was/were + 及物动词的过去分词
1. 我认为十六岁的孩子不应该被允许开车。
I don’t think sixteen-year-olds _______ _______ _______ to drive.
我同意。他们还不够认真I agree. They aren’t serious enough.
should be allowed
2. 你认为青少年应该被鼓励自己做决定吗？
Do you think teenagers ________ ________ ___________ to make their own decisions
不，我不认同这个。青少年还太小不能自己做决定。
No, I don’t agree with this. Teenagers are _______ _______ _______ make their own decisions.
should be encouraged
to
too young
3.青少年不应该被允许去做兼职。
Teenagers _______ _______ _______ _______ to have part-time jobs.
我不同意。他们可以从工作当中学到很多。
I disagree. They can _______ a lot _______ working.
4. 你认为如果不用闪光灯的话我们会被允许拍照吗？
Do you think we _______ _______ _________ to take photos if we don’t use a flash
如果不用闪光灯的话，那么拍照是可以的。
If you don’t use a flash, then it may be OK.
learn from
should not be allowed
may be allowed
含有情态动词的被动语态的结构为：
情态动词+ be +及物动词的过去分词;
变为否定句时只需要在情态动词后加not
1. 将含有情态动词的主动语态变为被动语态的方法：
1) 将主动语态的宾语变成被动语态的主语；
2) 将“情态动词 + 动词原形”变成“情态动词 + be + 及物动词的过去分词”。
His bedroom should be cleaned in the morning.
He should clean his bedroom in the morning.
Summary
含有情态动词的被动语态
You should finish your homework today.
We can’t see the stars in the daytime.
You must do the work at once.
英语的语态有两种，即主动语态和被动语态。含有情态动词的被动语态通常由________ + ___ + ______构成，在翻译被动语态时需要中文中加入___字。
情态动词
Your homework should be finished today.
The stars can’t be seen in the daytime.
The work must be done at once.
be
过去分词
被
Research & Extension
4a
Rewrite the sentences according to the example.
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_____________________________________.
will be encouraged (by parents) to do social work
for their community
must be kept away from the Internet
should be given chances (by their parents) to make their own decisions
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.
Fill in the blanks with the correct forms of the words.
be asked
are allowed
start
move
take
continue
Self Check
2
Complete the sentences using the correct forms of the words in brackets. Translate them into Chinese.
1. No matter how many difficulties we have, I believe all problems
can _______(solve) in the end.
2. Mobile phones should ______ (keep) off during the meeting.
3. Teenagers under eighteen must ___________ (not allow) to smoke or drink.
4. Many parents think going to school must _____ (put) first, so teenagers should ______________ (not encourage) to work part-time.
be solved
be kept
not be encouraged
not be allowed
be put