Could you tell me when___?A.the bus will leave B.will the bus leave C.the bus has left

问题描述:

Could you tell me when___?A.the bus will leave B.will the bus leave C.the bus has left
D.the bus has left
讲一下为什么

A
这是个when 引导的宾语从句
注意两点:
1.引导词必须在从句首位
2.作宾语时,不能用倒装语序
3.C 的时态不对,when 不可以和现在完成时连用,可用一般过去时