被动语态用法: 1)当我们不知道动作的执行者是谁,或者没有必要指出动作的执行者时,需用被动语态。 2)当我们需要强调动作的承受者时,常用被动语态。 3)如果需要说出动作的执行者, 用by引导出动作的执行者。 主动语态变为被动语态时,其谓语动词的时态要与原句时态保持一致,其谓语动词的数要与新主语保持一致。 主动语态变为被动语态时有以下几种情况: 1)主语+谓语动词+宾语 将主动语态的宾语变为被动语态的主语。 (主动)We bought a book yesterday. (被动)The book was bought yesterday. 2)主语+谓语动词+间接宾语+直接宾语 将主动语态中一个宾语变为被动语态的主语。多数情况下将间接宾语变为主语。如果直接宾语变为主语时,间接宾语前要加介词to / for. (主动)He showed me a book yesterday. (被动)I was showed a book yesterday. (被动)The book was showed to me yesterday. 3)主语+谓语动词+复合宾语 含有一个由宾语加宾语补足语构成的复合宾语,变为被动语态时,将主动语态的宾语变为被动语态的主语,宾语补足语保留不变,成为主语补足语。 (主动)I found him a good pupil. (宾语补足语) (被动)He was found a good pupil. (主语补足语) (责任编辑:admin) |