She used to be very supportive of me.她以前从不反驳我

used to be过去是

He used to be a mail carrier.

他曾是个邮递员。

India used to be a dependency of Britain.

印度过去是英国的附属地。

You do realize you're proving the exact opposite of your point?你知道你自相矛盾了吧

realize, know这两个词的共同意思是“理解,领悟”。其区别是：

realize指全面透彻地了解,语气比know强; know指知道、懂得、会做某事,不如realize了解得透彻、全面。例如:

So far as I know, he's abroad.

据我所知,他在国外。

I'm sorry to say I didn't realize that.

很遗憾我并不了解此事。