情态动词的被动语态
教学设计
一、教学目标
1. 了解情态动词的被动语态结构
2. 掌握情态动词的被动语态的变换方法
二、教学准备
多媒体，微课软件，纸和笔
三、教学步骤
1.通过例句学习变换方法
Ann can take good care of the cats ．
The cats can be taken good care of by Ann.
2. 总结结构：
S+ can/must/should等情态动词+ be+过去分词
3.练习题
① You must clean your bedroom every day.
② Parents should encourage teenagers to do social work.
③ Can Lucy do her homework tomorrow instead?
4.更多练习
I. 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?
2.In many countries, teenagers under 18 ____(should not allow) to go into Internet bars.
3.Some people think trees ____(should plant) on Tree planting Day only.
4.The flowers ____(must water) every day.
5.A dictionary ____(can use) in the exam.
II.同义句转换，每空一词。

1.Students should clean their classroom every day.
Their classroom ____ _____ ____ every day.
2.Can you mend this radio?
____ this radio ____ ____?
3.We should not allow fifteen-year-olds to work at night.
Fifteen-year-olds ____ ____ ____ to work at night.。