The document discusses the simple past tense in English. It explains that the simple past is used to talk about actions that started and finished at a specific time in the past. It provides examples of common time expressions used with the past tense, such as "last Friday" and "two years ago." It also describes how regular verbs are formed in the past tense with "-ed" and irregular verbs do not follow a set pattern, providing some common irregular verbs like "become/became" and "teach/taught." The document provides exercises for students to practice forming sentences in the simple past with regular and irregular verbs.