I used to live in London. (but not anymore)
Used to describes something that happened repeatedly in the past or a state that existed before — but no longer happens or is true now.
I used to live in London. (I don't now)
She used to play the piano every day. (she doesn't anymore)
subject + used to + base verb
Always past — no present form.
I used to walk to school.
She used to be shy.
He didn't use to eat vegetables.
We didn't use to have a car.
Did you use to walk to school?
Did she use to live here?
Note: used to (positive) vs use to (after did/didn't)
I used to walk to school.
I usually walk to school. ✓
I use to walk to school. ✗
I use to play football.
I used to play football.
I didn't used to like it.
I didn't use to like it.
I use to go to the gym. (present habit)
I usually go to the gym.
Did she used to live here?
Did she use to live here?
Say the answer out loud — then tap to check.
When I was young, I used toA playedB football every afternoon withC the boys fromD my street.
Bplayed → play
✓ used to + base verb
I didn't used toA like coffee, butB now I drinkC three cups everyD morning.
AI didn't used to → I didn't use to
✓ after didn't → use to, with no -d
DidA you use toB live in Madrid, orC did you used toD live in Barcelona?
Ddid you used to → did you use to
✓ questions with did also drop the -d
Answer using used to or didn't use to.
Used to (with -d) in positives; use to (no -d) after did/didn't.