used to 과거에 있었던 일을 얘기하는데 정말 정말 유용한 표현
something that you regularly did in the past but don't do anymore.
과거에 규칙적으로 했지만 지금은 더 하지 않는 무언가를 얘기할 때 쓴다.
Did you use to collect thing? 뭔가 옛날에 수집했었니?
Yes, I used to collect comic book.
No I didn't use to collect anything, but now I collect art. 예전엔 안했는데 요샌 미술품을 모음
She used to be my classmate, but not anymore.
We used to be friends.
We used to be classmates.
