USED TO

We use "used to" for past habits or states.

Ex: She used to go out a lot when she was younger.
Mary used to have short hair but it is long now.

The negative form is "didn't use to"
Ex: When Paul was a child, he didn't use to like cats.
My grandfather didn't use to wear glasses a few years ago.

The interrogative form is "did he / she / it / we / you/ they use to ...?"
Ex: Did you use to play video game?
Did she use to watch cartoons?
Where did he use to live?

Hope help you.

kisses

Teacher Nara