This document discusses the different types of past tenses in English: past simple, past continuous, past perfect, past perfect continuous, used to/would, and the unreal past. It provides examples and explanations of when to use each tense. The past simple is used for completed actions and habits in the past. The past continuous describes ongoing actions or settings in the past. The past perfect places an action before another past action. The past perfect continuous emphasizes the duration of a past action. Used to/would describe past habits or routines. The unreal past refers to imaginary past situations.