This document provides instruction on forming and using the past simple tense in English. It discusses: - Using the past simple to express actions that were completed in the past. Verbs are conjugated with "ed" or become irregular. - Signal words that indicate the past simple such as "yesterday" or "last week." - Conjugating the verb "to be" in the past simple according to whether the subject is singular (was) or plural (were). - Forming questions and negatives in the past simple with "did" plus the infinitive verb form. - Rules for changing verb spellings before adding "-ed" depending on whether the verb ends in a vowel,