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French 2 Unit 5: Passé Composé vs. Imparfait

French uses two main past tenses together: the passé composé for events that move a story forward and the imparfait for background, habits and ongoing actions. Choosing between them is the single most tested skill in second-year French.

Covers: Events vs. background, Interrupted actions, Signal words for each tense, Habit vs. single occurrence, Verbs that change meaning (savoir, connaître, pouvoir, vouloir), Narrating a story in the past

Study guide

Think of a past story as a film. The imparfait is the scenery and the ongoing action in the background: the weather, the time, how people felt, what was going on. The passé composé is the plot: the specific events that happened, one after another. Il faisait beau et les oiseaux chantaient (background). Soudain, un chien est arrivé et il a pris mon sandwich (events). If you ask "what happened next?", the answer is in the passé composé. If you ask "what was it like?" or "what was going on?", the answer is in the imparfait.

A very common pattern is the interrupted action. The action in progress is in the imparfait and the action that interrupts it is in the passé composé: Je dormais quand le téléphone a sonné (I was sleeping when the phone rang). Nous mangions quand elle est entrée. The word quand usually introduces the interruption, while pendant que (while) usually introduces the ongoing action. Two background actions happening at the same time are both imparfait: Pendant que je travaillais, il écoutait de la musique.

Signal words help. The passé composé often goes with expressions that pinpoint or count a completed action: hier, soudain, tout à coup, un jour, une fois, deux fois, d'abord, ensuite, puis, enfin, à ce moment-là, pendant deux heures (for a closed period). The imparfait goes with expressions of habit or ongoing time: d'habitude, souvent, toujours, tous les jours, le lundi, chaque année, autrefois, quand j'étais petit, pendant que. But meaning wins over keywords: Hier, il pleuvait describes the weather yesterday, while Hier, il a plu toute la journée sums up a completed period.

Repetition matters. An action repeated an unspecified number of times is imparfait: J'allais souvent à la piscine (I often went). An action repeated a specific number of times, or within a closed period, is passé composé: Je suis allé trois fois à la piscine. Duration works the same way: Elle a habité à Paris pendant cinq ans treats five years as one finished block, while Elle habitait à Paris describes where she lived at the time. A useful test is to ask whether the sentence tells you when the action ended; if it does, the passé composé is usually the right choice.

Some verbs change meaning depending on the tense. Savoir: je savais (I knew) vs. j'ai su (I found out). Connaître: je connaissais Marc (I knew Marc) vs. j'ai connu Marc (I met Marc). Pouvoir: je pouvais (I was able to, in general) vs. je n'ai pas pu (I failed to, couldn't on that occasion). Vouloir: je voulais (I wanted) vs. j'ai voulu (I tried or decided to) and je n'ai pas voulu (I refused). Avoir: j'avais peur (I was afraid) vs. j'ai eu peur (I got scared). Être: il était malade (he was sick) vs. il a été malade (he got sick, for a time that ended).

Key ideas

• The passé composé tells completed events; the imparfait describes background and ongoing actions.
• An action in progress interrupted by another uses imparfait + passé composé.
• Habits and unspecified repetition take the imparfait; counted repetition takes the passé composé.
• A closed period (pendant deux ans, toute la journée) usually takes the passé composé.
• Descriptions of time, weather, age, feelings and appearance take the imparfait.
• Savoir, connaître, pouvoir and vouloir change meaning between the two tenses.
• Signal words are helpful, but the meaning of the sentence decides.

Formulas and rules

Common mistakes

• Using the passé composé for background description, as in *Il a fait beau et j'ai été content to set a scene.
• Putting the interrupting action in the imparfait, as in *Je dormais quand le téléphone sonnait for a single ring.
• Using the imparfait with a counted number of times, as in *J'allais trois fois au musée.
• Translating every English simple past ("went", "saw") as passé composé without checking for habit or description.
• Missing the meaning change, as in using je savais for "I found out."

Before the test, make sure you can

• Classify past actions as background or events.
• Combine the imparfait and passé composé in interrupted-action sentences.
• Use signal words to predict the tense, and override them when meaning requires.
• Distinguish habitual or unspecified repetition from counted repetition.
• Handle closed time periods with pendant correctly.
• Translate savoir, connaître, pouvoir and vouloir with the right meaning in each tense.
• Narrate a short story mixing both tenses correctly.

Words to know

soudain

suddenly

tout à coup

all of a sudden

un jour

one day

à ce moment-là

at that moment

pendant que

while

quand

when

finalement

finally

sonner

to ring

crier

to shout

se casser la jambe

to break one's leg

rencontrer

to meet

perdre

to lose

retrouver

to find again

avoir peur

to be afraid

être fâché(e)

to be angry

être surpris(e)

to be surprised

être déçu(e)

to be disappointed

être ravi(e)

to be delighted

Sample practice questions

30 more questions like these, from level 1 to 5, are in the practice set.