The English sentence When you arrive, call me and the French sentence Quand tu *arriveras, appelle-moi mean exactly the same thing — but the French verb is in the futur (*arriveras), while the English verb is in the present (arrive). For B1 learners coming from English, this is one of the highest-leverage rules to master, because every conversation about the future will involve at least one such clause. The error rate is staggering: most English speakers learning French produce Quand tu arrives or Quand tu viens demain dozens of times before they finally retrain themselves to say Quand tu arriveras and Quand tu viendras demain. This page is dedicated specifically to that rule, with enough drilling examples to build the new instinct.
The rule, stated as plainly as possible
When quand introduces a clause about an event that has not yet happened — that is, a future event — the verb in the quand-clause goes into the futur (or futur antérieur). The main clause is also typically in the futur or imperative.
Quand il viendra, je serai là.
When he comes, I'll be there.
Quand tu partiras, n'oublie pas tes clés.
When you leave, don't forget your keys.
Quand on aura fini, on rentrera.
When we've finished, we'll go home.
Quand elle me téléphonera, je lui dirai la vérité.
When she calls me, I'll tell her the truth.
In each English version, the when-clause is in the present (when he comes, when you leave, when we've finished, when she calls). In each French version, the quand-clause is in the futur (viendra, partiras, aura fini, téléphonera). The shift is rigid — there is no acceptable French sentence in this set with quand il vient meaning a single future event.
When this rule applies — and when it doesn't
The rule applies whenever the quand-clause action is genuinely projected into the future from the moment of speaking. It does not apply to:
- Habitual or general statements, where the present can be used because the meaning is timeless.
- Past events, which take the imparfait or passé composé as appropriate.
Quand il vient, il est toujours content.
When he comes (whenever he comes), he's always happy. — habitual, present is correct
Quand il viendra demain, on lui parlera.
When he comes tomorrow, we'll talk to him. — single future event, futur required
Quand il est venu hier, on lui a parlé.
When he came yesterday, we talked to him. — past event, passé composé
The first sentence describes a generalization: every time he comes, he's happy. The present tense is correct because the meaning is timeless. The second sentence describes a specific future occasion (tomorrow); the futur is required. The third describes a past event; the passé composé is correct. The trap, again, is the second case — single, projected future events — where English maintains the present and French requires the futur.
The double-futur system
When both the quand-clause and the main clause are in the future, both clauses take a future tense. This is sometimes called the "double-futur" pattern and is unique to languages like French, Italian, and Spanish that maintain morphological future tenses.
Quand tu viendras, je serai là.
When you come, I'll be there. — both clauses futur
Quand il finira son travail, on partira en vacances.
When he finishes his work, we'll go on vacation. — both clauses futur
Quand elle nous écrira, on lui répondra.
When she writes to us, we'll reply.
The English equivalent always shows futurity once (in the main clause), with the subordinate clause "borrowing" futurity by sitting in the present. French shows futurity twice. Once you can hear this double-futur pattern as natural, you're producing accurate B1 French.
Futur antérieur: when the subordinate action precedes the main one
If the quand-clause action must be completed before the main-clause action begins, French requires the futur antérieur — literally "anterior future," meaning "will have done." The English equivalent is the present perfect (when I've finished) or, more loosely, the simple present (when I finish).
The futur antérieur is built by conjugating the auxiliary (avoir or être) in the futur, then adding the past participle.
Quand j'aurai fini mes devoirs, je sortirai.
When I've finished my homework, I'll go out.
Quand nous aurons mangé, on regardera un film.
When we've eaten, we'll watch a movie.
Quand tu auras lu ce livre, tu changeras d'avis.
When you've read this book, you'll change your mind.
Quand elle sera arrivée, je vous le dirai.
When she's arrived, I'll let you know.
In all four cases, there is a clear sequencing: the quand-clause action must finish before the main clause starts. Aurai fini (will have finished), aurons mangé (will have eaten), auras lu (will have read), sera arrivée (will have arrived) — these are futur antérieur forms.
Note the auxiliary choice in the last example: sera arrivée uses être because arriver belongs to the small set of motion verbs that take être in compound tenses. Past-participle agreement also applies — arrivée is feminine to agree with the implicit subject elle.
Other temporal conjunctions that follow the same rule
The quand-and-future rule extends to the entire family of temporal conjunctions:
- dès que — "as soon as"
- aussitôt que — "as soon as"
- lorsque — "when" (formal)
- une fois que — "once"
- après que — "after"
- tant que — "as long as"
Dès que tu seras prêt, on partira.
As soon as you're ready, we'll leave.
Aussitôt que je le verrai, je lui parlerai.
As soon as I see him, I'll talk to him.
Lorsqu'il prendra sa retraite, il voyagera.
When he retires, he'll travel.
Une fois que tu auras compris, tu pourras avancer.
Once you've understood, you'll be able to move forward.
Tant que tu seras là, je serai rassurée.
As long as you're here, I'll feel reassured.
The pattern is identical: the subordinate clause takes the futur (or futur antérieur), and so does the main clause. This is consistent across every temporal conjunction. If you internalize the rule for quand, you have it for all of them.
Why French does this
The reason French uses the futur where English uses the present is that French has not collapsed the present into a "default" tense the way English has. In English, the simple present serves multiple roles: actual present time (I work in Lyon), generic statements (Water boils at 100°), and — relevant here — future events in subordinate clauses (When you come, Before he leaves). The English simple present is overloaded.
French, by contrast, keeps tenses distinct. The présent indicates ongoing or generic time, the futur indicates future time, and the boundary is enforced. So when a clause means "future," French puts it in the futur regardless of whether it's a main clause or a subordinate clause. The English habit of using the present in subordinate clauses about the future is, from a French perspective, a sloppy underspecification of tense.
This is why the rule feels arbitrary at first — it's enforcing a distinction English doesn't bother to make — but it becomes intuitive once you accept that French treats every clause as independently tensed.
Real-world drilling examples
Here are sentences in conversational contexts where the rule is at work. Read them aloud, paying attention to the futur in the quand-clause.
— Tu m'appelles ce soir ? — Oui, dès que je rentrerai.
— Are you calling me tonight? — Yes, as soon as I get home.
On verra ça quand tu seras là.
We'll see about that when you're here.
Quand le bébé dormira, on pourra parler tranquillement.
When the baby's asleep, we'll be able to talk quietly.
Préviens-moi quand tu auras fini.
Let me know when you're done.
Quand on sera vieux, on se souviendra de tout ça en riant.
When we're old, we'll remember all this and laugh.
In every case, the English version uses the present in the when-clause and the French uses the futur or futur antérieur. This is the pattern to internalize.
The contrast with si
Crucially, si-clauses ("if") behave in the opposite way. Si never accepts the futur. With si, the present is correct for real conditions about the future:
Si tu viens demain, on dînera ensemble.
If you come tomorrow, we'll have dinner together. — si + présent, never *si tu viendras*
Quand tu viendras demain, on dînera ensemble.
When you come tomorrow, we'll have dinner together. — quand + futur, never *quand tu viens*
Compare those two sentences carefully. They have the same structure, the same time reference (tomorrow), and almost the same meaning. The difference is the speaker's stance. Si tu viens demain leaves your coming open as a possibility; quand tu viendras demain presupposes that you will come. This contrast in stance is encoded in the tense choice. See syntax/si-with-present-not-future for the full treatment of the si side of this asymmetry.
A near-future shortcut in casual speech
In very casual conversational French, you may hear the futur proche (aller + infinitive) replacing the futur simple, or even the present substituting for both, when the event is imminent. This is colloquial but widespread.
Quand il va arriver, on va manger.
When he gets here, we'll eat. (futur proche in both clauses, very casual)
Quand t'arrives, tu m'appelles.
When you arrive, you call me. (present in both clauses, very casual; written *quand tu arrives, tu m'appelles*)
These constructions exist in everyday speech, but in any careful or written French — including most B1 exams, professional writing, and standard speech — the futur is what's expected. Treat the present-substitution as a colloquial register marker, not as license to use it freely.
Common Mistakes
❌ Quand il vient demain, on lui parlera.
Incorrect — vient (présent) cannot describe a single future event in a quand-clause.
✅ Quand il viendra demain, on lui parlera.
When he comes tomorrow, we'll talk to him.
The single most common B1 error: applying the English habit of using the present in when-clauses to French. The futur is required.
❌ Quand tu finis tes devoirs, tu peux sortir.
Acceptable only as a habitual general rule. For a single future event, use futur antérieur.
✅ Quand tu auras fini tes devoirs, tu pourras sortir.
When you've finished your homework, you can go out.
If the meaning is "every time you finish" (a general parental rule), the present is fine: quand tu finis tes devoirs, tu peux sortir. But if the meaning is "after this particular session of homework," the futur antérieur (auras fini) is required because anteriority is implied.
❌ Quand il viendra, on parle.
Tense mismatch — futur in the quand-clause and présent in the main clause is inconsistent.
✅ Quand il viendra, on parlera.
When he comes, we'll talk.
If you've correctly put the quand-clause in the futur, the main clause should typically also be in the futur (or imperative). A présent main clause clashes with a futur subordinate.
❌ Quand j'ai le temps, je t'appellerai.
Tense mismatch when referring to a single future event.
✅ Quand j'aurai le temps, je t'appellerai.
When I have time, I'll call you.
This is a classic English-transfer error. When I have time in English uses the present, but in French the futur is required because the action is projected into the future.
❌ Dès que tu arrives, appelle-moi.
Incorrect for a single future arrival — needs futur.
✅ Dès que tu arriveras, appelle-moi.
As soon as you arrive, call me.
The same rule applies to dès que and other temporal conjunctions in the same family. The futur is required for projected future events across the whole conjunction set.
❌ Quand j'aurai fini, je vais sortir.
Mixing futur antérieur with futur proche in the main clause is awkward.
✅ Quand j'aurai fini, je sortirai.
When I've finished, I'll go out.
Stylistically, futur antérieur in the subordinate pairs naturally with futur simple in the main clause. Futur proche (je vais sortir) clashes with the more formal futur antérieur and produces an inconsistent register.
Key takeaways
The rule of quand + futur is one of the most important B1 milestones for English speakers learning French. It applies whenever a quand-clause refers to a future event, with futur antérieur for anterior actions. The same rule extends to lorsque, dès que, aussitôt que, une fois que, après que, and tant que. The contrastive partner is si, which always takes the présent for real future conditions and never the futur. Together, these two patterns — quand + futur for projected events, si + présent for hypothetical events — define the French treatment of future-time subordination. Drill them until they are reflexive, and your spoken French will leap forward in accuracy.
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Start learning French→Related Topics
- Les Propositions en quand: temporal clausesB1 — Quand introduces a temporal subordinate clause and — unlike its nearest English cousin when, which sometimes triggers the subjunctive in older grammar — always takes the indicative in French. The trickier point: when the time referred to is in the future, French uses the futur, not the present, where English uses the present.
- Les Propositions Temporelles au futur: tense in temporal clausesB1 — When a temporal subordinate clause refers to a future event, French requires the futur — never the present, even though English uses the present in this position. Si-clauses are the major exception: they always take the present, never the futur. Understanding this asymmetry is the key to producing accurate French in any future-oriented context.
- Si au présent: never with the future or conditionalB1 — The iron rule of si-clauses in French: si is followed by the présent (for real conditions), the imparfait (for hypotheticals), or the plus-que-parfait (for counterfactual past) — never by the futur and never by the conditionnel. This is the central French conditional rule and the one that separates B1 accuracy from a dozen common transfer errors.
- Le Futur: OverviewA1 — French has two main futures — the synthetic futur simple (je parlerai) and the analytic futur proche (je vais parler) — plus the futur antérieur (j'aurai parlé) for completed future actions. This page maps how each is built, when each is used, and how they divide up the future-time space.
- Le Futur AntérieurB1 — The future perfect of French — the 'will have done' tense. How to form it, when to use it (especially after quand, dès que, lorsque), and how it pairs with the futur simple to mark which future action finishes first.
- Le Conditionnel in Si-Clauses: Type 2, Type 3, and Mixed ConditionalsB1 — How the conditionnel pairs with the imparfait and plus-que-parfait to express counterfactual hypotheses about the present and the past — plus the mixed pattern, the universal English-speaker error to avoid, and the schoolyard rhyme that locks the rule in.