|I worked you worked he/she/it worked, etc||did I work? did you work? did he/she/it work? etc||I did not work you did not work he/she/it did not work, etc|
We use the simple past tense to talk about many kinds of past events: short, quickly finished actions and happenings, longer situations, and repeated events.
Peter broke a window last night.
I spent all my childhood in Scotland.
past-1 Scotland l-•-? future
Regularly every summer, Janet fell in love.
We use the simple past in ‘narrative’ — when we tell stories, and when we tell people about past events.
Once upon a time there was a beautiful princess who lived with her father. One day the king decided . . .
I saw John this morning. He told me .. .
(NOT I have seen John this morning. He has told me . . .)
A simple rule: use the simple past tense if you do not have a good reason for using one of the other past or perfect tenses.