Passé Composé vs Imparfait: When to Use Each (With Examples)

Passé Composé vs Imparfait: The Ultimate Guide

If you have been learning French for more than a few months, you have probably hit the wall. Which past tense should I use? Passé composé? Imparfait? Both?

The good news: there is a simple rule that works 90% of the time. Once you internalize it, you will stop guessing and start choosing the right tense automatically.

This guide gives you that rule, plus everything you need to use both tenses confidently.

The One Rule That Solves 90% of Cases

Passé composé = snapshot. Imparfait = video.

If you could capture the action in a single photo (it has a clear start and end), use passé composé.

If you would need a video to show it (it was ongoing, happening, in progress), use imparfait.

That is it. Now let us see how this rule plays out in real sentences.

When to Use Passé Composé

Passé composé is used for completed actions in the past — events that happened at a specific moment.

1. Specific One-Time Events

• J'ai mangé une pomme. (I ate an apple.) — A single action, finished.
• Elle est partie hier. (She left yesterday.) — One event, complete.
• Nous avons visité Paris. (We visited Paris.) — Done.

2. Sequence of Events (Story Progression)

• Je suis arrivé, j'ai mangé, puis je suis sorti. (I arrived, I ate, then I went out.) — Each event happened in order, each completed.

3. Specific Duration (Even If Long)

• J'ai vécu à Paris pendant 5 ans. (I lived in Paris for 5 years.) — Even though 5 years is long, it has a clear beginning and end.
• Elle a travaillé toute la journée. (She worked all day.) — Specific bounded time.

4. Sudden Actions or Reactions

• Soudain, il a crié ! (Suddenly, he shouted!) — A snap, complete action.

When to Use Imparfait

Imparfait is used for ongoing, incomplete, or repeated actions in the past.

1. Descriptions and Background

• Il faisait beau. (The weather was nice.) — A description, no start or end.
• Elle avait les yeux bleus. (She had blue eyes.) — A state, ongoing.
• La maison était grande. (The house was big.) — Description.

2. Habits and Repeated Actions in the Past

• Quand j'étais petit, je jouais au foot tous les jours. (When I was little, I used to play soccer every day.) — Repeated, habit.
• Le dimanche, on mangeait chez ma grand-mère. (On Sundays, we used to eat at my grandmother's.) — Recurring.

English clue: If you can say "used to" or "would" (in the sense of habit), use imparfait.

3. Ongoing Actions (Was Doing / Were Doing)

• Je regardais la télé. (I was watching TV.) — In progress.
• Ils mangeaient quand je suis arrivé. (They were eating when I arrived.) — Ongoing action.

4. Feelings, Mental States, and Conditions

• J'avais faim. (I was hungry.)
• Elle pensait à toi. (She was thinking of you.)
• Nous voulions partir. (We wanted to leave.)

Most feelings and mental states are imparfait by default. They are typically ongoing, not snapshots.

The Most Important Pattern: Using Both Together

This is where the magic happens. Imparfait sets the scene; passé composé moves the story forward.

Look at this sentence:

Hier, il pleuvait et je lisais un livre quand soudain tu as téléphoné.

(Yesterday, it was raining and I was reading a book when suddenly you called.)

Three actions, three correct tenses:

• Il pleuvait (imparfait) — Background: it was raining (ongoing weather).
• Je lisais un livre (imparfait) — Background: I was reading (ongoing).
• Tu as téléphoné (passé composé) — The action that happened, the moment.

The imparfait actions are the video running in the background. The passé composé action is the snapshot that happens within that video.

This pattern is everywhere in French storytelling:

• Quand j'étais jeune, je voulais devenir médecin. Un jour, j'ai changé d'avis.

(When I was young, I wanted to be a doctor. One day, I changed my mind.)

• Il faisait chaud et nous marchions sur la plage. Soudain, il a commencé à pleuvoir.

(It was hot and we were walking on the beach. Suddenly, it started to rain.)

How to Conjugate Each Tense

Passé Composé Formula

Passé composé = auxiliary verb (avoir or être) + past participle

Most verbs use AVOIR:

• J'ai mangé (I ate)
• Tu as fini (You finished)
• Il a vendu (He sold)
• Nous avons parlé (We spoke)
• Vous avez vu (You saw)
• Ils ont fait (They did)

A specific list of verbs use ÊTRE (often called the "DR MRS VANDERTRAMP" verbs — movement and state-change verbs):

• Je suis allé(e) (I went)
• Tu es venu(e) (You came)
• Il est arrivé (He arrived)
• Nous sommes partis (We left)
• Vous êtes monté(e)(s) (You went up)
• Elles sont nées (They were born)

Important: With être verbs, the past participle agrees in gender and number with the subject. Elle est partie (feminine, +e). Ils sont partis (masculine plural, +s). Elles sont parties (feminine plural, +es).

Past Participle Endings:

• -ER verbs → -é (parler → parlé)
• -IR verbs → -i (finir → fini)
• -RE verbs → -u (vendre → vendu)
• Irregular verbs: just memorize (être → été, avoir → eu, faire → fait, voir → vu)

Imparfait Formula

Imparfait = stem of nous form (present tense) + imparfait endings

Endings (always the same for every verb):

• Je → -ais
• Tu → -ais
• Il/Elle → -ait
• Nous → -ions
• Vous → -iez
• Ils/Elles → -aient

How to find the stem: Take the nous form in present tense, remove -ons.

Example with parler:

• Nous parlons → stem = parl-
• Je parlais, tu parlais, il parlait, nous parlions, vous parliez, ils parlaient

Example with finir:

• Nous finissons → stem = finiss-
• Je finissais, tu finissais, il finissait, nous finissions, vous finissiez, ils finissaient

The only exception is ÊTRE. Its imparfait stem is "ét-":

• J'étais, tu étais, il était, nous étions, vous étiez, ils étaient

Common Mistakes to Avoid

Mistake 1: Translating from English Word-by-Word

English uses "was/were + verb-ing" for both ongoing and finished actions. French does not.

• "I was working" → Je travaillais (imparfait — ongoing)
• "I worked yesterday" → J'ai travaillé hier (passé composé — complete)

Mistake 2: Using Imparfait for Specific Past Events

❌ Hier, je mangeais une pomme.

✅ Hier, j'ai mangé une pomme.

"Yesterday" implies a specific moment with a clear start and end. Use passé composé.

Mistake 3: Using Passé Composé for Descriptions

❌ Quand je suis arrivé, il a fait beau.

✅ Quand je suis arrivé, il faisait beau.

"It was nice weather when I arrived" — the weather is a background description, not a single event.

Mistake 4: Mixing Up Feelings and Reactions

• J'aimais le chocolat (I used to like chocolate — ongoing state, imparfait)
• J'ai aimé le film (I liked the movie — finished reaction to a specific event, passé composé)

This is subtle. A general state = imparfait. A reaction to one event = passé composé.

Practice Sentences

Try translating these without looking at the answers:

1. When I was little, I lived in Paris.

2. She arrived at 8 PM.

3. The sun was shining.

4. We watched a movie last night.

5. They used to come every summer.

6. He was tired so he went to bed.

Answers:

1. Quand j'étais petit, j'habitais à Paris. (imparfait both — ongoing past states)

2. Elle est arrivée à 20h. (passé composé — specific time)

3. Le soleil brillait. (imparfait — ongoing description)

4. Nous avons regardé un film hier soir. (passé composé — specific completed action)

5. Ils venaient chaque été. (imparfait — repeated/habitual)

6. Il était fatigué donc il est allé au lit. (imparfait for state, passé composé for action)

Quick Decision Tree

When in doubt, ask yourself in this order:

1. Is it a description? (the weather, a feeling, an appearance, a state) → Imparfait

2. Is it a habit or repeated action? (often, always, usually, every day) → Imparfait

3. Was it ongoing when something else happened? (I was doing X when Y happened) → Imparfait for X

4. Otherwise, it is probably a specific completed action → Passé composé

The Truth About These Tenses

Even native French speakers occasionally pause and choose. The distinction is sometimes subtle, and certain verbs (savoir, connaître, pouvoir, vouloir, devoir) shift meaning depending on tense:

• Je savais (I knew — ongoing) vs J'ai su (I found out — moment of learning)
• Je voulais (I wanted — ongoing desire) vs J'ai voulu (I tried/decided — specific moment of wanting)

Do not stress about getting it perfect at the beginner level. The 90% rule (snapshot vs video) will carry you a long way. The remaining 10% comes naturally with exposure to native speech.

Master Both Tenses with Practice

Reading French stories is the BEST way to internalize when each tense feels right. Pay attention every time you see a past tense and ask yourself: was that a description or an action?

Your next steps:

• Watch our YouTube channel for listening practice with real French stories
• Download our free flashcards at French Keys for 100 essential French words and verbs
• Get the "Learn French by Coloring" book on Amazon to practice numbers and vocabulary in a fun way
• Book a free 30-minute assessment with Magali at French Keys to drill these tenses with personalized exercises — past tense mastery is one of the most-requested topics in our private lessons

These two tenses are the gateway to telling real stories in French. Once they click, your French speaking jumps to a whole new level.

À bientôt !