(Grammar(used-to-and-would

used to / would + infinitive
Example: I used to / would smoke.

 

did not + use to + infinitive
Example: I did’t use to smoke.

 

did … use to + infinitive?
Example: did you use to smoke?
  • We use used to + infinitive or would + infinitive to describe repeated actions in the past:
    I used to keep the windows closed when I first moved in. (but I stopped doing this)
    I would leave the windows open whenever I was at home.
    Note: we do not usually use would in the negative form and in Yes/No questions.

  • We use used to + infinitive to describe past states that are usually no longer true:
    We used to live in London when I was a kid. (but we don’t now: not We would live in London when I was a kid.)
  • We do not use used to to refer to specific restricted periods in the past or saying how long it took or how many times:
    I lived in New York City for ten years. (not I used to live in New York City for ten years.)
    I went to London twice when I was young. (not I used to go to London twice when I was young.)
    Note: we do not use would with state verbs.