This document discusses the simple past tense in English. It explains that there are regular and irregular verbs. Regular verbs form the past tense by adding "-ed" like "walked" and "studied". Irregular verbs have unpredictable spelling changes like "gave" and "taught". Examples of regular and irregular verbs are provided. Rules for adding "-ed" to regular verbs depending on their spelling are also outlined. The purpose and pronunciation of regular past tense verbs is explained. Ways to practice past tense verbs are suggested at the end.