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语态是动词的一种形式，它用来表示句中主语同谓语动词之间的关系。 英语有两种语态， 主动语态和被动语态， 主动语态表示主语是谓语动词动作的执行者，被动语态表示主语是谓语动词动作的承受者。例如： I have repaired the radio. 我修好了收音机。 The radio has been repaired. 收音机被修好了。 The students cleaned the classroom. 学生们打扫了教室。 The classroom was cleaned by the students. 教室被学生们打扫了。 被动语态的构成： be + 过去分词 A building was damaged by the storm. 暴风雨毁坏了一座建筑物。 Our plate was made in China. 我们的盘子是中国生产的。 My bike was stolen. 我的自行车被盗了。 常用的被动语态的时态变化如下，以 ask 为例： 一般 进行 完成 现在I am asked, I am being asked, I have been asked 过去I was asked,I was being asked,I had been asked 将来I shall be asked, I shall have been asked 过去将来I shall be asked | 
