The document discusses the past simple tense in English. It explains that there are two types of verbs in the past simple: regular verbs that take "-ed" and irregular verbs that have varying forms. Regular verbs follow patterns for doubling consonants and dropping the "e" before adding "-ed". Irregular verbs must be memorized. The past form of the verb "to be" is also irregular. Examples are provided for forming positive, negative and yes/no question sentences in the past simple tense.