The document discusses the simple past tense in English. It explains that the simple past is used to talk about actions that were completed at a specific time in the past. Regular verbs are made past by adding "-ed" while irregular verbs have unique past forms. Examples are provided for forming simple past sentences using the verb "to be" and regular verbs like "to work" in affirmative, negative and interrogative statements. The simple past can also describe habitual or repeated past actions and events that occurred over a period of time but are now completed. An exercise with examples of correcting simple past verb forms in sentences is included.