This document discusses the past simple tense in English. It is used to describe completed actions in the past, whether they occurred once, habitually, or in sequence. The past simple is formed by using the past form of regular verbs (ending in "-ed") or irregular past forms for irregular verbs. It can be made affirmative, negative, or interrogative. The document also covers the active and passive voice in the past simple tense and how the passive is formed using "was/were + past participle."