Question

5 frases contendo used to e passe as mesmas para negativa e interrogativa.

Answer 1

I used to be a chain-smoker

I didn't used to be a chain-smoker

That´s somebody that I used to know

Used to and verbal form refer to a habit that took place in the past , a longing action, and which is now over.

Exemple : He used to work in his bedroom.

the negative form of 'used to' used to is 'didn't use to'

Exemple : I didn't use to do my homework.

The interrogative form of 'used to' is : Did / Sujet / 'use to' / verbal base

Exemple : Did you use to live in London?