The infinitif passé is French's compact, non-finite way of saying "having done something." It is the form that turns manger (to eat) into avoir mangé (to have eaten), partir (to leave) into être parti (to have left). Where English uses a participial phrase (after eating) or a finite clause (because I forgot), French often packs the same meaning into a single non-finite verbal unit: après avoir mangé, désolé d'avoir oublié. It is one of the most efficient and elegant constructions in the language, and learners who avoid it sound clunkier than they need to.
This page covers the formation rules (which auxiliary, which agreement), the four high-frequency contexts where the infinitif passé is genuinely useful in everyday French, and the same-subject constraint that catches every English speaker. By the end, the construction après avoir + past participle should feel as natural to you as the present tense.
What the infinitif passé does
The infinitif passé expresses an action that is completed relative to some reference point — usually the time of the main verb. It marks anteriority while keeping the verb in non-finite (infinitive) form, which is what makes it so compact.
Compare:
- Après je mange, je sors. — ungrammatical (après doesn't take a finite clause without a subject change).
- Après que j'ai mangé, je sors. — grammatical but heavy. (Three verb forms, two clauses.)
- Après avoir mangé, je sors. — grammatical, idiomatic, and the natural choice in spoken and written French.
Same meaning, three levels of compactness. The infinitif passé is the everyday choice when the subject is the same in both halves.
Formation: auxiliary + past participle
The recipe is simple and exactly mirrors the passé composé.
Auxiliary in the infinitive (avoir or être) + past participle
The auxiliary choice — avoir vs. être — follows the same rules as the passé composé. If the verb takes avoir in the passé composé, it takes avoir in the infinitif passé. Same for être.
| Verb type | Passé composé | Infinitif passé |
|---|---|---|
| Most verbs (avoir) | j'ai parlé | avoir parlé |
| Most verbs (avoir) | j'ai fini | avoir fini |
| Most verbs (avoir) | j'ai vu | avoir vu |
| Maison-d'être verbs | je suis parti(e) | être parti(e) |
| Maison-d'être verbs | je suis venu(e) | être venu(e) |
| Maison-d'être verbs | je suis tombé(e) | être tombé(e) |
| Pronominal verbs | je me suis levé(e) | s'être levé(e) |
| Pronominal verbs | je me suis couché(e) | s'être couché(e) |
A reminder of the être verbs: the dozen-or-so "maison d'être" verbs of motion or change of state — aller, venir, partir, arriver, naître, mourir, rester, tomber, monter, descendre, entrer, sortir, retourner, devenir, passer (in some uses), rentrer, revenir — plus all pronominal verbs.
Je regrette de ne pas avoir étudié plus sérieusement à l'université.
I regret not having studied more seriously in university.
Elle est triste d'être partie sans dire au revoir.
She's sad to have left without saying goodbye.
Après s'être réveillée, elle a regardé son téléphone pendant une heure.
After waking up, she looked at her phone for an hour.
Past participle agreement
Past participle agreement in the infinitif passé follows the same rules as in the passé composé.
- With avoir: agreement only with a preceding direct object.
- With être (maison-d'être): agreement with the subject in gender and number.
- With pronominal verbs: agreement with the preceding direct object (which is usually but not always the reflexive pronoun).
Après être arrivés à la gare, mes amis m'ont appelé.
After arriving at the station, my friends called me. (arrivés agrees with the masculine plural mes amis)
Marie est contente d'être venue à la fête.
Marie is glad she came to the party. (venue agrees with feminine subject Marie)
La lettre que je regrette d'avoir envoyée…
The letter I regret having sent… (envoyée agrees with preceding feminine direct object la lettre)
If past-participle agreement is still shaky for you, drill the passé composé agreement rules before pushing too hard on the infinitif passé.
The four high-frequency contexts
The infinitif passé is not a rare literary form. It shows up in four very common contexts in everyday French, and you will both produce and recognize it daily once you are at B1.
1. Après + infinitif passé — after V-ing
This is the headline use. The construction après + infinitif passé is the standard French way of expressing "after V-ing" when the two clauses share a subject. It is fully colloquial — you will hear it in casual conversation, in news reports, in literature.
Après avoir bu mon café, je suis sorti faire un tour.
After drinking my coffee, I went out for a walk.
Après avoir lu ton message, j'ai tout de suite compris ce qui se passait.
After reading your message, I immediately understood what was going on.
Après être revenu de Paris, il a complètement changé de mode de vie.
After getting back from Paris, he completely changed his way of life.
Après s'être disputés toute la soirée, ils se sont enfin réconciliés.
After arguing all evening, they finally made up.
The same-subject constraint is strict: the implicit subject of the infinitif passé must be the explicit subject of the main clause. If the subjects differ, switch to après que + indicative:
Après qu'il est parti, j'ai éteint la télé.
After he left, I turned off the TV. (different subjects: il / je → use après que)
Après que les enfants se sont endormis, on a regardé un film.
After the children fell asleep, we watched a movie. (different subjects → use après que)
A prescriptive note: the Académie maintains that après que takes the indicative, not the subjunctive — because once an action has happened, it is established fact. In real spoken French, many native speakers use the subjunctive after après que by analogy with avant que. Both forms are encountered; the indicative is the prescriptively correct form.
2. Merci de + infinitif passé — thank you for V-ing
When you thank someone for something they have already done, the natural French construction is merci de (or merci d'avoir / merci d'être) + past participle. This is one of the highest-frequency uses of the infinitif passé in everyday speech.
Merci d'être venu jusqu'ici juste pour me voir.
Thank you for coming all the way here just to see me.
Merci d'avoir pris le temps de m'expliquer tout ça.
Thank you for taking the time to explain all that to me.
Merci de m'avoir prévenu — sans ton message, je serais arrivé en retard.
Thanks for warning me — without your message, I'd have been late.
If the action is ongoing or general, merci de takes the present infinitive instead: merci de m'écouter (thank you for listening — said while the listener is still listening), versus merci de m'avoir écouté (thank you for listening — at the end of the conversation, when the listening is over). This subtle aspectual difference matters and natives feel it sharply.
3. Penser / croire + infinitif passé — to think one has done
When you report a belief about your own past action, French uses the infinitif passé as a complement of penser, croire, se rappeler, se souvenir, être sûr, etc. This is the same-subject equivalent of je pense que j'ai… — and the infinitive form is more elegant and more idiomatic.
Je pense avoir compris l'essentiel de ton explication.
I think I've understood the gist of your explanation.
Elle croit avoir laissé son sac dans le taxi.
She thinks she left her bag in the taxi.
Je suis presque sûr d'avoir verrouillé la porte avant de partir.
I'm almost sure I locked the door before leaving.
Je me souviens d'avoir vu cette femme quelque part.
I remember seeing this woman somewhere.
The same-subject rule is what licenses this construction: je pense que j'ai compris and je pense avoir compris both work, but the infinitive form is preferred when the subject of the embedded verb is the same as the subject of penser. If the subjects differ, you must use a finite que-clause: je pense qu'il a compris (I think he has understood — different subject, no infinitive option).
4. Être désolé(e) / content(e) / heureux(se) de + infinitif passé
Adjectives of feeling or evaluation that take de + infinitive use the infinitif passé when the action is completed. This is the same-subject construction that lets you express your feelings about your own past actions — apologies, regrets, satisfaction, gratitude.
Je suis désolé d'avoir oublié ton anniversaire.
I'm sorry I forgot your birthday.
On est tellement contents d'être venus !
We're so glad we came!
Elle est fière d'avoir terminé son marathon.
She's proud to have finished her marathon.
Je suis vraiment heureuse de vous avoir rencontrés.
I'm really happy to have met you all.
The pattern extends naturally to negative feelings: je regrette d'avoir dit ça (I regret having said that), j'ai honte d'avoir menti (I'm ashamed of having lied), j'en ai marre d'avoir attendu (I'm fed up with having waited).
Pronoun placement
Object pronouns sit immediately before the auxiliary in the infinitif passé — exactly the same position as in the passé composé.
Après l'avoir vu, j'ai compris pourquoi tout le monde en parle.
After seeing it, I understood why everyone's talking about it.
Merci de me l'avoir dit — sinon je n'aurais rien su.
Thanks for telling me — otherwise I'd have known nothing.
Je suis content de leur avoir parlé avant la réunion.
I'm glad I spoke to them before the meeting.
When the verb is pronominal, the reflexive pronoun obviously stays attached: après s'être levé, not après être levé.
Après nous être perdus dans le centre-ville, on a fini par trouver le restaurant.
After getting lost downtown, we finally found the restaurant.
Negative infinitif passé
To negate the infinitif passé, both ne and pas (or jamais, rien, etc.) sit together before the auxiliary. This is one of the few cases in French where ne and pas are not split around the verb.
Je regrette de ne pas avoir étudié plus de langues quand j'étais jeune.
I regret not having studied more languages when I was young.
Elle est désolée de ne pas être venue à ton mariage.
She's sorry she didn't come to your wedding.
Après n'avoir rien mangé de la journée, j'avais vraiment faim.
After not eating anything all day, I was really hungry.
The negative-pair-before-auxiliary rule is general for all non-finite verbs in French: bare infinitive (ne pas fumer), infinitif passé (ne pas avoir compris), gérondif (en ne disant rien).
English vs. French: where the patterns diverge
English speakers consistently undershoot the infinitif passé because English has multiple competing structures for the same meaning.
| English structure | French equivalent |
|---|---|
| After eating, I left. | Après avoir mangé, je suis parti. |
| After I had eaten, I left. | Après avoir mangé, je suis parti. (same-subject) / Après que j'ai mangé, je suis parti. |
| Thank you for coming. | Merci d'être venu. |
| Thanks for the call. | Merci de m'avoir appelé. (lit. having called me) |
| I think I forgot the keys. | Je pense avoir oublié les clés. |
| I'm sorry I forgot. | Je suis désolé d'avoir oublié. |
| I regret not telling her. | Je regrette de ne pas le lui avoir dit. |
English uses gerunds (after eating), participles (having seen), and finite clauses (I think I forgot) interchangeably. French has a much sharper division: when the subject is the same, use the infinitif passé. When it's different, use a finite clause. Once you internalize this, you stop hesitating between je pense avoir compris and je pense que j'ai compris — the first is more idiomatic and is what natives reach for.
Common Mistakes
Mistake 1: Using the bare infinitive after après instead of the infinitif passé.
❌ Après manger, on est sortis.
Wrong: après requires the infinitif passé — après avoir mangé.
✅ Après avoir mangé, on est sortis.
After eating, we went out.
Mistake 2: Using the wrong auxiliary.
❌ Après avoir parti, il a fermé la porte.
Wrong: partir is a maison-d'être verb — après être parti.
✅ Après être parti, il a fermé la porte.
After leaving, he closed the door.
Mistake 3: Forgetting past-participle agreement with être.
❌ Marie est contente d'être venu à la fête.
Wrong: venu must agree with feminine Marie — venue.
✅ Marie est contente d'être venue à la fête.
Marie is happy she came to the party.
Mistake 4: Treating the literary form n'avoir pas compris as the everyday default.
⚠ Je regrette de n'avoir pas compris. (formal/literary register)
Acceptable in formal or literary writing, where ne and pas can split around the auxiliary — but it sounds stiff in everyday speech.
✅ Je regrette de ne pas avoir compris.
I regret not having understood. (the standard everyday form: ne and pas group together before the auxiliary)
Mistake 5: Using après + infinitif passé when the subjects differ.
❌ Après avoir mangé, ma mère est partie.
Ambiguous / wrong-subject: this would mean ma mère ate, but if you mean 'after I ate, my mother left,' switch to a finite clause.
✅ Après que j'ai mangé, ma mère est partie.
After I ate, my mother left.
Mistake 6: Dropping the infinitif passé in favor of a heavy finite clause when same-subject de + infinitif passé would be cleaner.
❌ Merci que tu sois venu.
Wrong: merci doesn't take a que-clause; use merci de + infinitif passé.
✅ Merci d'être venu.
Thank you for coming.
Key takeaways
- The infinitif passé = avoir or être in the infinitive + past participle. Auxiliary choice and agreement follow the same rules as the passé composé.
- Four high-frequency contexts: après + infinitif passé (après avoir mangé); merci de + infinitif passé (merci d'être venu); penser / croire / se souvenir + infinitif passé (je pense avoir compris); adjective of feeling + de + infinitif passé (désolé d'avoir oublié).
- All of these contexts require the same subject as the main clause. If subjects differ, switch to après que
- indicative or a que-clause.
- Negation: ne pas (or ne jamais, ne rien) sits together before the auxiliary: ne pas avoir compris, ne jamais être venu.
- Pronouns sit immediately before the auxiliary: après l'avoir vu, merci de me l'avoir dit.
- The infinitif passé is fully colloquial — not a literary or formal-only form. Avoiding it in everyday speech makes you sound clunkier than you need to.
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