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外研2003课标版《Grammar》PPT课件优质课下载
How
What
定义
:表示主语是动作的承受者.
When
How
What
When do we use the passive voice?
Many houses will be built here.
1. 不知道或没必要指出动作的执行者。
The plan was supported by those who wished to have more chances to speak English.
2. 出于礼貌, 不愿意说出动作的执行者。
When
How
What
We keep food in the fridge.
S
V.
O.
Food
How to change into the passive voice sentence
is kept
(by us) in the fridge.
一般现在时的被动语态：
S+ am/is /are +done