This document provides information about using the past simple tense in English. It discusses:
1. When the past simple tense is used, such as to talk about completed past actions, repeated past actions, and series of past actions.
2. How regular verbs are conjugated in the past simple by adding "-ed" and the spelling rules for adding "-ed" depending on the letter the verb ends in.
3. How irregular verbs are conjugated in the past simple and must be memorized since they do not follow a pattern of adding "-ed".
4. How to form positive, negative, and interrogative sentences using the past simple tense.