被动语态的结构为“助动词be+及物动词的过去分词(p.p)”。被动语态的不同时态是通过be的时态变化来表示的,其人称和数方面应与主语保持一致。其具体变化为:
一般现在时:am/is/are+p.p.
一般过去时:was/were+p.p.
一般将来时:shall /will be +p.p.
现在完成时:have /has been +p.p.
现在进行时:am/is/are+being+p.p.
过去将来时:should /would be +p.p.
含情态动词的被动结构:情态动词+be+p.p.
例句
We are given a lot of homework to do. 我们有很多作业要做。
They were given a warm send-off. 他们受到热烈的欢送。
I think we are being followed. 我想有人在跟踪我们。
They told me that the case was being investigated. 他们告诉我案子正在调查。
The documents for which they were searching have been recovered. 他们找寻的文件已找到了。
He asked if Mary had been sent to hospital. 他问玛丽是否已被送进医院。
Check carefully, so any mistakes will be caught. 仔细检查一遍,把所有错误都找出来。
He knew he would be punished for it. 他知道他会为此受到惩罚。
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