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Grammar

The French Subjunctive: What It Is and When to Use It

Learners often treat the subjunctive as a "hard tense" to memorize a conjugation table for, but the real challenge is recognizing when it's needed at all. The subjunctive doesn't report something as a fact — it expresses a wish, a doubt, an emotion, or something uncertain, which is what sets it apart from the indicative, the mood used for objective facts.

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Spot it through the "que" + verb structure, not a memorized list

The subjunctive almost always shows up after "que," in a sentence with two different subjects across the two clauses. Instead of memorizing a long list of trigger phrases, it's more effective to recognize the underlying category behind the trigger: a wish, an emotion, doubt or possibility, or necessity.

1
Wish / expectation

"Je veux que tu viennes." (I want you to come.) — the subject "je" does the wanting, but "tu" is the one carrying out the action.

2
Emotion

"Je suis content qu'il soit là." (I'm glad he's here.) — an emotion always pulls the subjunctive into the clause after "que."

3
Doubt / possibility

"Il est possible qu'elle parte demain." (She might leave tomorrow.) — the outcome isn't certain yet.

4
Necessity / obligation

"Il faut que tu finisses ce soir." (You have to finish tonight.) — the structure "il faut que" almost always takes the subjunctive.

How to conjugate: built from the present-tense "ils" form, not learned separately

For most -er and -ir verbs, the subjunctive stem comes from the present-tense "ils" form (drop the "-ent" ending), then add -e, -es, -e, -ions, -iez, -ent. For example, "parler" → "ils parlent" → stem "parl-" → "que je parle, que tu parles, qu'il parle..." A handful of very common verbs are fully irregular and have to be learned on their own.

être — fully irregular
que je sois, que tu sois, qu'il soit, que nous soyons, que vous soyez, qu'ils soient
avoir — fully irregular
que j'aie, que tu aies, qu'il ait, que nous ayons, que vous ayez, qu'ils aient
aller — stem shifts mid-conjugation
que j'aille, que tu ailles, qu'il aille, que nous allions, que vous alliez, qu'ils aillent
faire — stem changes entirely
que je fasse, que tu fasses, qu'il fasse, que nous fassions, que vous fassiez, qu'ils fassent
A note Not every verb followed by "que" takes the subjunctive — "penser que," "dire que," "être sûr que" in the affirmative still take the indicative, because they present something as certain. That subtle distinction is what makes the subjunctive genuinely hard, not the conjugation table itself.

Why the subjunctive matters for TCF Canada and DELF/DALF

Using the subjunctive correctly in Speaking and Writing is one of the clearest signals of moving past an intermediate level — examiners notice right away when a candidate shifts naturally between the indicative and subjunctive instead of always playing it safe with the indicative. It's also a common grammar mistake — see 5 French grammar mistakes Vietnamese speakers make for other errors that affect your score just as much.

Still unsure whether to use the subjunctive or the indicative?

Book a free consult — Hải will help you build the reflex for spotting the right moment for the subjunctive when you're speaking for real.

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