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被动语态可以用于“介词 + 动名词”结构中，在英语中是很正式的用法，一般不用于口语。“介词（after， before，on）+ 动名词” 这个结构通常相当于一个时间状语从句。
| on + 动名词 通常表示两个动作几乎同时发生 | On/After being told that her mother was seriously ill, she hurried back to England. |
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| after + 动名词的完成式 表示第一个动作(开始之前 已经完成) | The man called the police after being robbed. |
| after / before + 动名词 只表示先后顺序 | He killed a child before being arrested. |
| want +被动语态 往往表示希望别人完成所说的动作 | I want the luggage fetched from the hotel this afternoon.被动语态用于want 后面的不定式中时，to be 可以省略 |
| 被动语态用于过去进行时 以强调动作的持续性 | I was being asked about the film all day yesterday. |