助动词和情态动词改错问题5We requested that the superintendent of the building clean up the storage room in the basement so that the children (had) enough space for their bicycles.括号里的是错的.应该改成might have,为什么不能说could have呢?
问题描述：
助动词和情态动词改错问题5
We requested that the superintendent of the building clean up the storage room in the basement so that the children (had) enough space for their bicycles.
括号里的是错的.应该改成might have,为什么不能说could have呢?
答
我觉得两个可以,只是语气不同.might的语气比could 弱.请求的话用might比较客气