How to Form Used to

The form of used to is shown in the table below.

The form of the used to is the same for all pronouns.

Yes/No Question	Did you use to smoke?
Short Answers	Yes, I did.  No, I didn’t.
Question word question	What did you use to do?
Positive Sentence	I used to smoke.
Negative Sentence	I didn’t use to smoke.

Click on the links below to learn more about the Past Tenses

The Past Simple

The Past Continuous

The Past Perfect Simple

The Past Perfect Continuous

Time Expressions with The Present Perfect

Used to vs. Would