We use the Past Simple to talk about finished things that happened in the past.
Affirmative:
Regular: I played football.
Irregular: I drank water.
Negative:
I didn't read the book yesterday.
I didn't go to the cinema
Interrogative:
Did you like the hamburger?
Did she run in the park?
For sentences in the past, we can normally see words like: yesterday, last month, last year, two days ago, three days ago, etc...