怎样变这个主动句为被动语态?They don't use the room(他们未使用该房间）,变为被动语态,我觉得应是The room does't used by them,而答案是The room isn't used by them 为什么是isn't 而不是doesn't啊,

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怎样变这个主动句为被动语态?They don't use the room(他们未使用该房间）,变为被动语态,我觉得应是The room does't used by them,而答案是The room isn't used by them 为什么是isn't 而不是doesn't啊,
怎样变这个主动句为被动语态?
They don't use the room(他们未使用该房间）,变为被动语态,我觉得应是The room does't used by them,而答案是The room isn't used by them 为什么是isn't 而不是doesn't啊,

怎样变这个主动句为被动语态?They don't use the room(他们未使用该房间）,变为被动语态,我觉得应是The room does't used by them,而答案是The room isn't used by them 为什么是isn't 而不是doesn't啊,
被动形式的基本结构是be+动词过去分词,然后各种时态都在be上变化,不会存在助动词doesn't

被动句一般是主语后跟be done

一般现在时的被动态 就是 系动词 + 过去分词

被动语态最基本的结构形式就是 be done

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