Mary has gone__ to see a friend of hers__(划线提问)为什么用where不用what这句话怎么划线用what

问题描述:

Mary has gone__ to see a friend of hers__(划线提问)
为什么用where不用what
这句话怎么划线用what

Where has Mary gone?

地点状语从句
去哪里、什么地方用where
where = what place
所以用where
用what提问就要写成 What place has Mary gone?= Where has Mary gone?