湖南省隆回县第二中学高中英语模块四导学案：Unit3 Grammar2
Originated by Ms. Li Revised by Ms. Shi and Ms. Dai
Studying aims: 1. Learn the passive voice.
2. Learn how to use the passive voice
3. Improve our abilities of group cooperation
Self education(自主学习):
情态动词与被动语态：
情态动词的被动语态形式可用于谈论能力，可能性，职责和允诺.
情态动词的被动语态形式的构成是在情态动词后加be和过去分词
Computer can work out the position of the user at any time.（主动语态）
The position of the user can be worked out at any time.（被动语态）
