摘要: 被动语态的用法: (1)不知道或没有必要说明动作的执行者是谁.不用by+动作执行者短语 Such books are written for children. 这些书是为儿童写的. I haven’t been told about it . 没有人告诉我这件事 (2)强调动作的承受者.这时应用by短语. The cup was broken by David. (3)作客观说明时.常采用一种被动语态句型 It’s / was said / believed / reported / + that - It’s reported that about three hundred people were killed in this earthquake. 据报道.这次地震中大约有三百人死亡.

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