The document discusses the past simple tense in English. It provides examples of regular and irregular verbs in the positive, negative, and interrogative forms of the past simple tense. It also discusses rules for forming the past tense of verbs ending in "e" and "y" and gives examples of how the past simple tense is used to talk about completed past actions, past states, and past habitual actions. It concludes by listing common time expressions used with the past simple tense.