Used to, didn’t use to – Grammar chart

used to, didn’t use to – past habits and states

Used to

Past habits

We use used to for past habits or things that happened repeatedly in the past, but they don’t happen any more.

Past states

We use used to with non-action verbs (be, have, etc.) for past states: things that were true in the past, but they are not true any more.

Didn’t use to, did you use to?

We use did/didn’t + use to for negatives and questions.

We can also use never for negatives

 

Past simple vs used to

Past simple + always, usually, often, etc.

We can also use the past simple tense + frequency adverbs for past habits.

Past simple (NOT used to)

But we use the past simple (NOT used to) for actions that happened once or when we mention when they happened.

 

Usually or used to?

Used to is only used in the past. For present habits, we must use the present simple tense with usually or normally.