Question

This factory is ______ the one we visited last week. 正确答案是the one,但为什么不是表语从句用what?

上面原题貌似笔误了，原题是This factory is ______ we visited last week. 为什么不能是what?

Answer 1

可以是what ........用the one 时是省略了that or which 的。。。

Answer 2

what也对的吧

Answer 3

what = the one (which)

追问

能不能再说的明白一点啊？

追答

This factory is the one (which) we visited last week.
这正是我们上周参观过的那家工厂.
也可以说成
=This factory is what we visited last week.