Subjunctive after doubt, negative opinion and superlatives

Je doute qu'il soit là.I doubt he's there.

Necessity, desire and emotion aren't the only things that pull a verb into the subjonctif. Doubt does too — and so, in a more flexible way, does an opinion verb like croire or penser once it's negated or turned into a question, and a superlative followed by a relative clause, where the subjonctif is by far the usual choice.

Quick shortcut: doubt takes the subjonctif; after a superlative, the subjonctif is very common too, but the indicatif stays possible when the speaker presents the information more assertively. A plain affirmative opinion (je crois que, je pense que) stays in the indicatif — it's negating or questioning that opinion which opens the door to the subjonctif.

Doubt and uncertainty

Douter que (to doubt that) and expressions like il est possible que, il n'est pas certain que and je ne suis pas sûr(e) que all present something as uncertain rather than as an established fact — and that uncertainty is exactly what the subjonctif is for:

• Je doute qu'il vienne. (I doubt he's coming.)
• Il est possible qu'elle soit en retard. (She might be late.)
• Je ne suis pas sûr que ce soit une bonne idée. (I'm not sure this is a good idea.)

If the action is already over rather than in progress or upcoming, the same triggers reach for the subjonctif passé instead: Je doute qu'il soit venu. (I doubt he came.)

When a negated or questioned opinion opens the door

Croire and penser (to believe / to think) are ordinary opinion verbs, and in an affirmative statement they take the indicatif, exactly like espérer:

• Je crois qu'il a raison. (I believe he's right.)
• Je pense qu'elle viendra. (I think she'll come.)

Negated or turned into a question, though, these verbs genuinely open the door to the subjonctif — because denying or questioning a belief casts real doubt on it, unlike denying a simple fact:

• Je ne crois pas qu'il ait raison. (I don't believe he's right.) — indicatif a is possible too, especially in speech; the subjonctif marks the doubt more clearly.
• Crois-tu qu'elle vienne ? (Do you think she'll come?)

This isn't a strict switch — the indicatif stays perfectly correct in both cases, especially when the question or negation is more a formality than a real expression of doubt (Tu ne crois pas qu'il fait froid ?, expecting agreement, reads naturally with the indicatif too).

Superlatives and speaker certainty

A superlative — le meilleur, le seul, le premier, le dernier — followed by a relative clause can take either mood. The subjonctif is by far the more usual choice, especially for a personal or exaggerated claim; the indicatif is also possible, and tends to show up when the speaker presents the relative clause more assertively, as plain information rather than an impression — it isn't a dependable subjective-vs-objective test, just a leaning.

• C'est le meilleur film que j'aie jamais vu. (It's the best film I've ever seen — a personal judgement.)
• C'est le seul restaurant qui soit ouvert le dimanche. (It's the only restaurant open on Sundays, as far as I know.)
• C'est le seul restaurant qui est ouvert le dimanche. (Same sentence, indicatif — stated more assertively, as settled information.)

Both moods are grammatical in every one of these examples.

Common mistakes

• ❌ Je doute qu'il vient. → ✅ Je doute qu'il vienne. (douter que always needs the subjonctif — it isn't the softer, negatable kind of opinion verb that croire/penser are)
• Both Crois-tu qu'elle vienne ? and Crois-tu qu'elle vient ? are possible — the subjonctif foregrounds uncertainty, the indicatif can reflect greater speaker commitment to the belief; neither is a mistake to correct.
• ❌ Treating C'est le meilleur film que j'aie jamais vu as the only correct option and marking que j'ai jamais vu wrong → both are attested; the subjonctif is just the more common choice for this kind of personal superlative claim.

Quick check

Choose the subjonctif or the indicatif for the verb in brackets, and be ready to say why.

1. Je doute qu'elle ____ (avoir) le temps.
2. Je crois qu'il ____ (avoir) raison.
3. Penses-tu qu'il ____ (pouvoir) réussir ?
4. C'est la seule personne qui ____ (savoir) la réponse — j'ai vérifié.

Key takeaways

• Doubt (douter que, il est possible que, je ne suis pas sûr que) always triggers the subjonctif, just like necessity, desire and emotion.
• Croire and penser take the indicatif when affirmative, but negating or questioning them genuinely opens the door to the subjonctif — without making the indicatif wrong there.
• A superlative (le meilleur, le seul...) followed by a relative clause can take either mood: the subjonctif is the usual, more common choice, and the indicatif tends to show up for more assertively stated information — a leaning, not a dependable subjective-vs-objective rule.
• For an action that's already over, the same triggers reach for the subjonctif passé instead of the subjonctif présent.