The document summarizes the simple past tense in English. It discusses: 1) The simple past is used to describe actions that happened once, never, or several times in the past. It can also describe actions that occurred in sequence or in the middle of another past action. 2) The affirmative form of regular verbs is created by adding "-ed" and irregular verbs have their own forms. 3) The negative is formed using "did not" or "didn't" plus the infinitive verb form. 4) Questions are formed using "did" plus the subject and infinitive verb.