Diagram of the Past Progressive
A diagram to visualize the Past Progressive
1. We use the Past Progressive when we talk about something which was happening around a period of time in the past.
2. We use the Past Progressive (blue) together with the Simple Past (pink). The Past Progressive is used for the action in the past which was in progress when a new action (Simple Past) happened.
3. Two actions which were in progress in the past do not influence each other.