The document discusses rules for forming the past tense of verbs in English. It provides examples of regular verbs that follow the basic rules of adding "-ed" to form the past tense (e.g. walk/walked, jump/jumped). It also discusses irregular verbs that end in "e", which take off the "e" and add "-ed" to form the past tense (e.g. save/saved, bake/baked). The document encourages practicing applying these rules to form the past tense of verbs in sentences.