The teacher asked them who had completed their tests to leave the room as quietly as possible. 这个句子中的ask,我翻译成“要求”,那么为什么who 后面用完成时? (1)这里的ask 是“问”的意思。所以不是虚拟语气。 (2)因为them who是定语从句,所以不用虚拟语气。 此外,虚拟语气标志词后面的定语从句,是不是要用虚拟语气?