The document provides rules and examples for using the past continuous tense in English. It explains that the past continuous is formed using the past tense of "to be" plus the present participle ("-ing" form) of the main verb. It gives examples of affirmative, negative, and interrogative sentences in the past continuous. It also describes common uses of the past continuous, such as for interrupted or ongoing past actions, actions happening at a specific time in the past, and two simultaneous actions in the past. An exercise at the end provides additional examples of forming sentences in the past continuous tense.