Grammar

Passé Composé vs Imparfait: How to Know Which One to Use

Understand the difference between passé composé and imparfait with a practical way to decide which tense fits the situation.

The classic explanation is that passé composé is for completed actions and imparfait is for descriptions. That is useful, but it is not enough. The better question is: what role does the verb play in the story?

Passé composé moves the story

Use the passé composé for events that advance the sequence: something happened, then something else happened.

Je suis arrivé à huit heures. J’ai pris un café, puis je suis parti.

Imparfait sets the scene

Use the imparfait for background, habits, ongoing situations and descriptions that frame the main events.

Il faisait froid et les rues étaient presque vides. Je travaillais dans ce quartier à l’époque.

They often work together

The two tenses are frequently partners. The imparfait gives the background; the passé composé introduces the event.

Je marchais dans la rue quand j’ai rencontré un ancien collègue.

A practical test

  1. Am I describing the situation or background? → often imparfait.
  2. Am I presenting a specific event that advances the story? → often passé composé.
  3. Is it a habit in the past? → often imparfait.
  4. Is it a completed event with a clear place in the sequence? → often passé composé.

These are decision aids, not absolute rules. Context still matters.

Practice

Complete: Quand je ______ (habiter) à Montréal, je ______ (prendre) souvent le métro. Un matin, je ______ (voir) quelque chose d’inhabituel.

Suggested answer: Quand j’habitais…, je prenais… Un matin, j’ai vu…
Keep building your French.

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