1. We use used to / didn’t use to + infinitive to talk about past habits or repeated actions
    or situations / states which have changed.
2.We can also use would to refer to repeated actions in the past. However,  we don’t use
    would for non-action verbs (e.g. be, have, know, like, etc.).
    NOT I didn’t recognize him. He wouldn’t have a beard.
2. Use be used to + gerund to talk about a new situation which is now familiar or less strange.
3.  Use get used to + gerund to talk about a new situation which is becoming familiar or less strange.