The document discusses the simple past tense in English. It explains that the simple past tense is used to talk about actions or states of being that are completed in the past. It provides examples of using regular and irregular verbs in the simple past tense, such as "admired" and "was." It also describes how to make the simple past tense negative using "did not" and how to ask questions in the simple past tense using "did" or "was/were." Key rules and formulas are given for forming the simple past tense of both regular and irregular verbs.