The document describes the past continuous tense in English. It explains how to form the past continuous using was/were + verb+ing, and provides examples of affirmative, negative, and interrogative sentences. It notes that the past continuous is used to talk about actions in progress at a specific time in the past or actions happening simultaneously in the past. It encourages writing example sentences using common verbs like write, study, play, watch, and travel in the past continuous form.