人教版九年级英语上册《Teenagers should be allowed to choose their own clothes》SectionA PPT(第3课时)，共21页。
Warming up
Do you think teenagers should be allowed to use the Internet?
Do you think teenagers should be allowed to use mobile phones?
Do you think teenagers should be allowed to study with friends after class?
Do you think teenagers should be allowed to drink or smoke?
Do you think teenagers should be allowed to choose their own clothes?
Grammar Focous
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.
Language Points
1.educate 教育
educate sb. (to do sth.) 教育某人做……
【拓展】education n. 教育
2.make one's own decision =decide on one's own=decide for oneself 自己做决定
e.g.:I can make my own decision/decide for myself and manage my own life.
语法拓展
被动语态（三）——含情态动词的被动语态
含有情态动词should 的被动语态的结构：should +be+及物动词的过去分词
一、肯定句式：主语+情态动词+be+动词的过去分词+（by+宾语）
e.g.:Your homework should be finished by yourself.
二、否定句式：主语+情态动词+not+be+动词的过去分词+（by+宾语）
e.g.:Teenagers should not be allowed to go out at night.
三、一般疑问句结构为：情态动词+sb./sth.+be+动词的过去分词+（by+宾语）？
回答：Yes,主语+should./No,主语+shouldn't.
e.g.:—Should these young trees be watered every day?
—Yes,they should./No,they shouldn't.
Exercise
一、单项选择。
( )1.—It's difficult for children to cross the river to school.
—I think a bridge ______ over the river.
A.should be built B.will build
C.is built D.was built
( )2.Teenagers ______ allowed to drive.
A.should not be B.should be not
C.not should be D.shouldn't
( )3.A computer ______ me by my mother last week.
A.was given B.was given to
C.was giving D.is giving
( )4.He ______ stay outside last night.
A.was seen B.is seen
C.was seen to D.saw
( )5.—Do you know Earth Day?
—Sure.It ______ in 1970 to tell us to protect our planet.
A.sets up B.set up
C.was set D.was set up
二、句型转换。
1.The lights should be turned off before you leave the classroom.(改为主动语态)
You ______ ______ off the lights before you leave the classroom.
2.I can't hear her sing.(改为被动语态)
She can't ______ ______ ______ sing.
3.Should we throw waste paper everywhere?(改为被动语态)
______ waste paper ______ ______ everywhere?
4.Books should be put into the desk.(对画线部分提问)
______ ______ books ______ ______?
... ... ...
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