The document discusses different past tenses in English - the past simple, past continuous, and past perfect tenses. It provides examples of how each tense is used to describe actions and situations that occurred in the past. Specifically, it notes that the past simple expresses completed actions, the past continuous describes ongoing actions, and the past perfect places one past action before another for storytelling purposes. It then provides an example story and exercises for the reader to practice using these tenses to narrate events that happened in the past.