The document summarizes different aspects of using past tenses in English including: 1) It outlines the forms of the past simple, past continuous, and past perfect tenses including their negative and interrogative forms. 2) It explains how to use these tenses to talk about finished actions, actions happening at the same time, and actions that happened before or after other past actions. 3) It provides examples of time expressions and adverbs that are used with different past tenses.