B1 · Imperfeito paints; pretérito cuts
Two pasts — scene and cut
Imperfeito is the wide shot: chovia, era tarde, costumava ir a pé. Pretérito is the cut: o eléctrico parou, vi-a, falámos. A useful frame: Era… quando de repente…. Mix them and you sound like a person telling a story.
Chovia quando o eléctrico parou.
It was raining when the tram stopped.
Era tarde e havia pouca gente na rua.
It was late and there were few people in the street.
Costumava ir a pé.
I used to walk.