used to句型做反义疑问句

看情况。不过一般都是用过去时态。给你据几个例子：
He used to like bananas a lot,didn't he?
There used to be a lot of buildings, weren't there?
You used to be a teacher, weren't you?

语法书上说的用usedn't 或didn't , 包括there be 句型

He used to be a teacher, usedn't he?