Talking about the past - Negative and interrogative

 

We use did to make questions with the past simple:

Did she play tennis when she was younger?
Did you live abroad?
When did you meet your wife?
Where did you go for your holidays?

But questions with who often don't use did:

Who discovered penicillin?
Who wrote Don Quixote?

We use didn't (did not) to make negatives with the past simple:

They didn't go to Spain this year.
We didn't get home until very late last night.
I didn't see you yesterday.

Exercises

Past Tense - Negative
Past Tense - Questions
Past Tense - "Wh" Questions