The document provides instruction on forming and using the past continuous tense in English. It explains that the past continuous is formed using was/were + -ing verb form and is used to describe actions that were in progress at a specific time in the past. Examples are given of affirmative, negative, and interrogative sentence structures in the past continuous as well as examples of its use. Exercises are included for learners to practice forming sentences in the past continuous about pictures depicting people engaged in various activities.