北师大版（2019）高一英语必修一 Unit3 Celebrations Lesson 2 Special Occasions 语法专题—被动语态课件（共24张PPT)

Part Ⅲ　语法专题——被动语态
1．被动语态的用途
[观察1]
The plan was successfully carried out.
这个计划成功地实施了。
Many houses were destroyed in the hurricane.
很多房子在飓风中被毁。
[发现1]
当强调动作的承受者，将承受者作为谈话的中心时用被动语态。