Negative form
Subject | Negative form | Past habit | Verb simple form | Complement |
I You He / She / It We They | did not (didn’t) | use to | spend | a lot of money. |
Interrogative form
Auxiliary Did | Subject | Past habit | Verb simple form | Complement? |
Did | I you he / she / it we they | use to | spend | a lot of money? |
Short answers
Affirmative answers | Negative answers | ||||
Yes, | I you he she we you they | did. | No, | I you he she we you they | didn’t. |
More examples:
| (affirmative) | David used to have very long hair when he was 15 years old.
|
| (negative) | David didn’t use to have very long hair when he was 15 years old. |
| (interrogative) | Did David use to have very long hair when he was 15 years old? |
| (Aff. answer) | Yes, he did.
|
| (Neg. answer) | No, he didn’t. |
