This document discusses the simple past tense in English. It explains that regular verbs form the simple past by adding "-ed" while irregular verbs completely change form. It provides examples of forming the simple past for regular verbs based on their ending, as well as examples of irregular verb conjugations. The document also discusses how the verb "to be" is conjugated in the simple past and provides examples of affirmative, negative, and interrogative sentences using simple past verbs.