They have no idea at all which place he has gone请问用which place为什么不对,
问题描述：
They have no idea at all which place he has gone
请问用which place为什么不对,
答
如果用which place 应该为They have no idea at all which place he has gone to？
答
go to a place
少了个介词，改成 ...... to which place he has gone.
或者.......where he has gone
where = to which
答
应该用where
如果用which place 应该为They have no idea at all which place he has gone to?
which place在这里是to的宾语