I used to collect stamps.

我过去曾经集邮。

She doesn't collect stamps.

她不收集邮票。

I collect stamps.

我收集邮票。

Do you collect stamps? Yes, collecting stamps is my hobby.

你收集邮票吗？是的，收集邮票是我的爱好。

Simon: Do you collect stamps?

西蒙：你集邮么？