The document discusses the past continuous tense in English. It explains the form of the past continuous tense in positive, negative, and yes/no question sentences. It then provides examples of how the past continuous tense is used to talk about actions that were ongoing or in progress at a specific time in the past, actions that were ongoing over a period of time in the past, and actions that were interrupted by other past actions. It also discusses how the past continuous tense can show that an action was temporary. Finally, it compares the use of the past continuous and past simple tenses together.