This school is _____you visited last year?中为何不可填that?

问题描述:

This school is _____you visited last year?中为何不可填that?

用what来代替the school,为主语从句。后一句中缺少成分应为you visited the school.所以不可用that。

后面是一个特殊疑问句
所以应该用特殊疑问词来引导

This school is _the one that_you visited last year?这样就对了.
或者
This school is _what_you visited last year.