When to use completed actions in the past, specific time in the past, past habits
Forming the past simple positive Regular verbs: Add -ed to the base form of the verb.
Example: "talk" → "talked"
Forming the past simple negative Use did not (didn’t) + base form of the verb.
"I did not (didn't) play football."
Forming the past simple question Use Did + subject + base form of the verb.
Example: "Did you visit your grandparents?"