The Past Continuous tense describes actions that were happening at a specific moment in the past. It’s formed with the verb "to be" in the past (was/were) + the -ing form of the main verb. Main uses: Ongoing actions in the past: Actions that were in progress at a certain time. She was studying at 8 p.m. last night. Interrupted actions: An action in progress that was interrupted by another action. They were watching TV when the phone rang. Parallel actions: Two or more actions happening simultaneously in the past. I was cooking while he was cleaning. Structure: Positive: I was reading when you called. Negative: He wasn’t working yesterday. Question: Were they playing football at 5 p.m.?