The past simple have rules. In the past simple use the verb to be.
Positive regular verbs end in... ed I was there. Negative use didn´t+ infinitive. We weren´t there Questions use did+ infinitive. Was she there? Yes, she was. No, she wasn´t. Why was she there?
In the questions put "Did" Example: Did i stay?
In the past simple have irregular verbs and regulars.
In the irregular the word may change. Irregulars
go They went home. sit She sat here. They didn´t go home. She didn´t sit here. Did they go home? Did she sit here?
In the regular verbs put verb+ed. Regulars
play They played football. open She opened the door. They didn´t play football. She didn´t open the door. Did they play football? Did she open the door?