温故知新
一． 句型转换。
1.I think sixteen—year—olds should be allowed to watch TV on weekends .(否)
I ____ ____sixteen –year-olds ___　＿＿＿　allowed to watch TV on weekends .
  2.Students should be allowed to listen to Mp4 in class . (否)
  Students ____　＿＿＿be allowed to listen to Mp4 in class .
3. He is too young to go to school . (同义句)
He isn’t _____　＿＿＿＿to go to school .
4.Parents should allow children to choose their own hobbies .(被动)
Children ____　＿＿＿　＿＿　＿＿＿choose their own hobbies .
二．用所给动词的适当形式填空。
1.The boy seems ____( be ) tired .
2.Does he need ______( clean ) the floor now ?
3.They have to stay at home instead of ____(play ) football .
4.The musice sounds _____( beautifully )
5.He met an old friend on his way home and he stopped ____( talk )to him.
三.完成句子。
1.我相信他今天不回来。
I ____ ____ he will come today .
2.Mary 想穿耳孔。
Mary wants ___ ___ her ___ ___
3.小树苗需要每周浇三次水。
Young trees should ____ ____ three times a week .
4.他呆在家里而没有去野炊。
He stayed at home _____ ____ _____ for a picnic .
自主学习
Task 1  考考你的单词
证件_____          安全；安全性___  
吸烟___           兼职的__________
穿透__________   耳环，耳饰_________
闪光灯；闪耀______
Task2  查查你的词组
1．be excited about__________
2.takes photos_______________
3．wear earings_______________
4、be allowed to do sth_____________
5、使…远离___________    6、给某人机会做______
7、某人自己做决定_____    8、继续做_______

小组交流
读2d,回答问题。
1) Where do they go for school trip?

2) Does Mr. Smith allow students to take photos?

3) How to take photos?
 我的疑问
自主学习后，我还有不明白的问题：
_____________________________________________
_____________________________________________
 合作探究
含有情态动词的被动语态
1. 含有情态动词的被动语态的结构为：
情态动词+___+及物动词的________。
2. 含有情态动词的主动语态变为被动语态时，要把主动语态的_____变成被动语态的主语。

3. 变为否定句时只需要在情态动词后加________。

4. 变为一般疑问句时只需把________提到句首。
教师点拨
〖例1〗Teenagers should        to choose their own clothes.
A. allow    B. to allow    C. be allowed    D. allowed
〖解析〗C。主语teenagers是动作allow的承受者，再根据should确定要用情态动词的被动语态，即“情态动词+be+过去分词”。
〖例2〗-What should we do first if we want to develop our village?
-A lot of new roads        , I think.
A. have to build B. must build C. have built D. must be built
〖解析〗D。new roads是动作build的承受者，应用被动语态。含must的情态动词的被动语态为“must+be+情态动词”。
〖例3〗This kind of food_____cool, clean and dry according to the instruction.
A. should be carried  B. must be put    C. should be placed  D. must be kept
〖解析〗D。根据句意，主语food是动作的承受者，用被动语态，而空格后的cool是形容词，而“keep+某物+形容词”意为“使……保持……状态”，故选D。
〖例4〗Smoking ____ in public places, so don’t smoke here.
A. allows     B. is allowed   C. doesn’t allow  D. isn’t allowed
〖解析〗D。主语smoking是动作allow的承受者，排除A和C。由so don’t smoke here可知这儿禁止吸烟，故选D。

课内巩固

A.我一定行！
用括号内所给单词的适当形式填空。
1.How many magazines ____(can borrow) in your library every week?

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