Passé Composé vs Imparfait: The Grammar Guide That Actually Helps on TCF/TEF Canada

One note on pendant: its tense changes meaning. J'ai travaillé pendant deux heures uses passé composé because the two-hour block is complete and bounded. Pendant qu'il dormait, je lisais uses imparfait for both verbs because both actions were simultaneously ongoing. The word pendant alone does not tell you which tense to use. The meaning of the sentence does.

Citable passage: French trigger words for past tenses can guide tense selection but are not reliable without understanding the underlying logic. Words like soudain (suddenly) and une fois (once) consistently pair with passé composé because they signal a discrete, bounded event. Words like d'habitude (usually) and chaque jour (every day) pair with imparfait because they signal habitual, ongoing action without a fixed narrative endpoint (Lawless French; Lingolia French).

Common exceptions and tricky verbs

A handful of verbs change meaning noticeably depending on which past tense you use. These show up on TCF and TEF writing tasks, and examiners notice when they are misused.

Savoir and connaître both translate as "to know" in English, but they are not interchangeable and the tense shifts meaning further:

Je savais qu'elle était là. (I knew she was there. — imparfait, ongoing knowledge/state)
J'ai su qu'elle était là. (I found out / learned that she was there. — passé composé, the moment of learning)
Je connaissais bien ce quartier. (I knew this neighbourhood well. — imparfait, familiarity as state)
J'ai connu Marie en 2019. (I met Marie in 2019. — passé composé, the specific moment of meeting)

Pouvoir and vouloir are trickier because the tense changes whether you are describing a general capacity or reporting what actually happened:

Je pouvais nager mais je n'ai pas nagé. (I was able to swim but I didn't swim. — imparfait for general ability as state, passé composé for the event of not swimming)
J'ai pu entrer. (I managed to get in / I succeeded in getting in. — passé composé signals a specific successful attempt)
Je voulais partir mais je suis resté. (I wanted to leave but I stayed. — imparfait for the ongoing desire as background state, passé composé for the actual event)

Devoir works the same way:

Je devais travailler ce soir-là. (I was supposed to work that evening. — imparfait, obligation as background condition)
J'ai dû travailler jusqu'à minuit. (I had to work until midnight / I ended up working until midnight. — passé composé, the completed obligation)

The mistake I see most often with these verbs is avoir and être used as main verbs rather than auxiliaries. Students write il a été fatigué where they mean il était fatigué (he was tired). Fatigue is a state, and in that context it belongs in the imparfait. The passé composé version, il a été fatigué, would mean he was tired for a defined period that is now over, which is possible but unusual. If you mean ongoing fatigue as the backdrop of a story, use the imparfait.

How passé composé and imparfait affect your TCF/TEF Canada writing score

The TCF Canada expression écrite section has three tasks. Task 1 asks you to write a short message or email. Task 2 asks you to write a narrative account of a personal experience or a described situation. Task 3 is a structured argument based on two documents with opposing viewpoints.

Past tense usage matters most in Task 2. This is where you tell a story, describe an experience, or recount an event. Examiners score it on four criteria: task completion, linguistic range and accuracy, coherence and cohesion, and register appropriateness (LanguageNext, 2026). The linguistic range criterion rewards candidates who show control of different tense forms, not just the one they are most comfortable with.

A candidate who writes a narrative entirely in the passé composé has not shown linguistic range. A candidate who mixes both tenses correctly, using the imparfait for scene-setting and the passé composé for plot events, has shown B2-level grammar control. That is the difference between a CLB 6 and a CLB 7 on this criterion.

See how the two tenses work in a sample TCF-style narrative sentence:

Ce matin-là, il faisait beau et les rues étaient tranquilles. Je me promenais près du canal quand j'ai entendu un bruit bizarre derrière moi. Je me suis retourné et j'ai vu un chien qui courait vers moi en aboyant.

(That morning, the weather was fine and the streets were quiet. I was walking near the canal when I heard a strange noise behind me. I turned around and saw a dog running toward me, barking.)

In this short paragraph: faisait, étaient, me promenais, and courait are all in the imparfait. They establish the weather, the atmosphere, what I was already doing, and how the dog was moving as background action. J'ai entendu, je me suis retourné, and j'ai vu are all in the passé composé. They are the events: what happened, one after another, each complete before the next begins.

That is what your TCF or TEF Canada writing task should look like. B2 does not require perfection. It requires that an examiner can see you understand the distinction, and that paragraph does it.

For TEF Canada, the expression écrite component works on the same principle. The writing tasks differ slightly in format from TCF, but the scoring criteria for linguistic accuracy and range are comparable. The same preparation works for both exams.

Citable passage: TCF Canada and TEF Canada expression écrite tasks score candidates on linguistic range and accuracy as a distinct criterion. According to LanguageNext's 2026 TCF Canada writing guide, mixing up passé composé and imparfait in a narrative task signals a gap in grammatical range that prevents a score above CLB 6. Correct use of both tenses in the same passage is one of the clearest markers of B2-level written production.

If you are targeting CLB 7, stop memorizing vocabulary lists for a week and write narratives instead. Three sentences is enough to start: set a scene in the imparfait, then move it forward with the passé composé. Do that ten times and you will have done more useful grammar work than in a month of flashcards.

For a broader picture of how grammar and structure feed into your writing score, the TCF Canada writing practice guide walks through all three tasks with sample answers. If you are planning your preparation across all four skills, the 30-day TCF/TEF Canada study plan shows how to schedule grammar revision alongside reading and listening practice so nothing gets squeezed out. And once you have a writing score, use the CLB conversion tool to see exactly what your result means for your Express Entry profile.

Frequently asked questions

What is the easiest way to decide between passé composé and imparfait?

Ask whether the action has a defined end point in the story. If yes, use passé composé. If the action was an ongoing state, a habit, or a background description with no clear end in the narrative, use imparfait. The distinction is about narrative function, not how long the action lasted in real life. A war can last decades but still land in the passé composé if you are reporting it as a completed event: La guerre a duré six ans. (The war lasted six years.)

Which verbs use être instead of avoir in the passé composé?

The 17 verbs grouped under the DR MRS VANDERTRAMP mnemonic take être: devenir, revenir, monter, rester, sortir, venir, aller, naître, descendre, entrer, retourner, tomber, rentrer, arriver, mourir, partir, passer. All reflexive verbs also use être. When être is the auxiliary, the past participle agrees with the subject in gender and number. A feminine subject adds -e to the past participle; a plural adds -s; a feminine plural adds -es.

Does the TCF Canada writing section test passé composé and imparfait directly?

Task 2 of the TCF Canada expression écrite asks you to write a narrative, which requires past tenses. Examiners score you on linguistic accuracy across four criteria. Mixing up passé composé and imparfait signals a gap in grammatical range that pulls your score below CLB 7. Task 3 is argumentative and focuses more on present and conditional forms, so past tense matters most in Task 2.

Can a sentence contain both passé composé and imparfait?

Yes, and this is actually the normal pattern in French storytelling. The imparfait sets the scene or describes what was already happening, and the passé composé introduces the event that interrupts it. Example: Je dormais (I was sleeping, imparfait) quand le téléphone a sonné (when the phone rang, passé composé). This pattern of imparfait plus passé composé in the same sentence is a reliable sign of B2-level writing.