为啥用When does he come ,而不是 when will he come

为啥用When does he come ,而不是 when will he come
为啥用When does he come ,而不是 when will he come

为啥用When does he come ,而不是 when will he come
要看语境

因为he是第三人称，所以要用does，而will是表未来

说明问的是他平时什么时候回来，而用will是特指将来的某一时刻。