The document discusses the simple past tense in English. It notes that the simple past, also called the past simple, is used to narrate events that occurred at a specific time in the past. It then discusses that the past simple generally uses temporal expressions that refer to the past. It explains that the past simple is used for past actions or situations and uses the auxiliary "did" for all persons, including third person singular. It also discusses that the past form of the verb "to be" does not have contracted forms in the affirmative but can be contracted in the negative. Finally, it provides examples of simple past tense sentences.