The past simple (also called past indefinite or preterite) is a tense used to show that a completed action took place at a specific time in the past. The simple past is also frequently used to talk about past habits and generalisations. With the past simple, we're talking about a specific time in the past and can usually specify when the action happened.
The past simple is formed using the verb + ed for regular verb. Irregular verbs follow a different pattern which will talk about in another article.
In addition, questions are made with did and negative forms are made with did not.