Every French verb has two big families of forms. The finite forms are the ones that carry person, number, tense, and mood — je parle, nous parlions, ils parleront, qu'elle parle. They can serve as the main verb of a sentence and they agree with a subject. The non-finite forms — parler, parlant, en parlant, parlé — carry none of that information. They are the forms you reach for when you need to subordinate, modify, compound, or nominalise a verb without inflecting it for a subject.
The distinction sounds technical, but it organises a huge amount of French grammar. Knowing which form to use after avant de, after en, after vouloir, in a compound tense, or as the subject of a sentence depends entirely on whether you need a finite or a non-finite form. This page lays out the full system and flags the places where English speakers consistently get it wrong.
What "finite" means
A finite verb form is one that has been inflected: it carries information about who is doing the action (1st, 2nd, 3rd person), how many people (singular or plural), when (tense), and in what mode of reality (mood — indicative, subjunctive, conditional, imperative).
In nous parlions, the form parlions tells you four things at once:
- Person: 1st (we)
- Number: plural
- Tense: imparfait (past habitual / ongoing)
- Mood: indicatif (real, factual)
Every conjugated form you will ever learn — present, imparfait, passé composé, futur, conditionnel, subjonctif, impératif — is finite. Finite forms can stand alone as the main verb of a sentence: Je parle français. They cannot appear in just any context; they require a subject (or, in the imperative, an addressee that is structurally implied).
Je parle français depuis l'âge de cinq ans.
I've spoken French since I was five.
Quand nous étions enfants, nous parlions tous les jours avec notre grand-mère.
When we were children, we used to talk every day with our grandmother.
Il faut que tu parles plus fort, je n'entends rien.
You need to speak up — I can't hear a thing.
What "non-finite" means
A non-finite form carries none of those features. It is not anchored to a person, a number, a tense (in the absolute sense), or a mood. Instead, it functions like a verbal adjective, a verbal noun, or a verbal adverb — a way to slip a verbal idea into a sentence without making it the main verb.
French has four non-finite forms:
- L'infinitif (parler, finir, prendre)
- Le participe présent (parlant, finissant, prenant)
- Le gérondif (en parlant, en finissant, en prenant)
- Le participe passé (parlé, fini, pris)
Each has a distinct distribution and meaning. Mixing them up is one of the most common causes of stilted, unnatural French.
L'infinitif — the bare verb form
The infinitif is the form you find in dictionaries: parler, finir, prendre, être. It plays four major roles in French:
After modal/aspectual verbs
Just like English "I want to go" or "I can swim", French chains an infinitive directly after certain main verbs:
Je veux partir tôt demain matin.
I want to leave early tomorrow morning.
Tu peux m'aider à porter ce carton ?
Can you help me carry this box?
Elle doit rentrer avant minuit.
She has to be home before midnight.
The main verbs that take a bare infinitive include vouloir, pouvoir, devoir, savoir, oser, aller, venir, faire, laisser, sembler, paraître, falloir, espérer, aimer, préférer, détester. Some take a preposition first (commencer à, finir de, refuser de) — see The Infinitive: Overview.
After prepositions
This is the biggest difference from English. After almost every French preposition, you use an infinitive, not an -ing form:
Avant de partir, n'oublie pas tes clés.
Before leaving, don't forget your keys.
Il est sorti sans dire un mot.
He left without saying a word.
Pour réussir, il faut travailler dur.
To succeed, you have to work hard.
Au lieu de te plaindre, fais quelque chose.
Instead of complaining, do something.
The only major preposition that takes a different form (the participe présent) is en, which produces the gérondif (see below).
As the subject or complement of a sentence
French can use an infinitive as a noun phrase, the way English uses gerunds:
Fumer est interdit dans tous les lieux publics.
Smoking is prohibited in all public places.
Apprendre une langue prend des années.
Learning a language takes years.
English often prefers the -ing form here (Smoking, Learning); French uses the infinitive (Fumer, Apprendre). This is one of the most common transfer errors: Smoking is prohibited → ✗ Fumant est interdit. The right translation is Fumer.
As an instructional command
In recipes, signs, manuals, and other impersonal instructions, French uses infinitives where English uses imperatives:
Mélanger la farine et les œufs avant d'ajouter le lait.
Mix the flour and eggs before adding the milk.
Ne pas se pencher par la fenêtre.
Do not lean out of the window. (sign on a train)
This is a register choice: the infinitive feels neutral and impersonal, addressing no one in particular.
Le participe présent — the -ant form
The participe présent ends in -ant for all verbs except a tiny set of irregulars. It is formed from the nous stem of the present tense, minus -ons, plus -ant:
- parler → nous parlons → parlant
- finir → nous finissons → finissant
- prendre → nous prenons → prenant
- être → étant (irregular)
- avoir → ayant (irregular)
- savoir → sachant (irregular)
The participe présent has two main uses, and they have very different feels.
As an adjective (very common)
When -ant forms describe a noun, they behave like adjectives and agree in gender and number:
C'est une fille charmante et intelligente.
She's a charming, intelligent girl.
Les résultats sont très encourageants.
The results are very encouraging.
J'ai lu un livre passionnant sur la révolution.
I read a fascinating book about the revolution.
These adjectival -ant forms are extremely common in everyday French: intéressant, amusant, fatigant, choquant, étonnant, gênant, rassurant, marquant.
As a verb form (formal/literary)
Used as a verb form (without en), the participe présent is not productive in spoken French. It survives mainly in formal writing, legal language, news prose, and academic style. It expresses a circumstance attached to the main clause, often causal:
Étant donné l'heure tardive, nous avons décidé de remettre la réunion.
Given the late hour, we decided to postpone the meeting. (formal)
Ne sachant pas son adresse, je n'ai pas pu lui écrire.
Not knowing his address, I couldn't write to him. (formal)
In casual conversation, French speakers replace these with subordinate clauses (comme il était tard, nous avons remis la réunion). If you write je travaillant in a text message, you will sound like a 19th-century novel.
Le gérondif — en + participe présent
The gérondif looks identical to the participe présent but is preceded by en: en parlant, en finissant, en prenant. It functions as a verbal adverb, modifying a main verb to express simultaneity or means.
Simultaneity ("while X-ing")
Elle écoute de la musique en faisant ses devoirs.
She listens to music while doing her homework.
Ne lis pas en marchant, tu vas tomber.
Don't read while walking — you're going to fall.
Means ("by X-ing")
On apprend en faisant des erreurs.
You learn by making mistakes.
Il s'est blessé en courant pour attraper son train.
He hurt himself by running to catch his train.
Critical rule: same subject
The gérondif must share its subject with the main verb. This is non-negotiable:
✅ J'ai vu Marie en sortant du métro.
I saw Marie when I came out of the metro. (I was the one coming out)
❌ J'ai vu Marie sortant du métro.
(participe présent — Marie was the one coming out — but this construction is formal/literary, not gérondif)
If you mean I saw Marie as she was coming out, French uses a relative clause (j'ai vu Marie qui sortait du métro) or a participe présent without en in formal style.
Le participe passé — the -é/-i/-u form
The participe passé is the form used to build compound tenses and to function as a passive adjective. Endings vary by group:
- 1er groupe: -é (parlé, mangé, donné)
- 2e groupe: -i (fini, choisi, réussi)
- 3e groupe: variable (pris, fait, lu, vu, été, eu, mis, ouvert, dit, écrit...)
In compound tenses
Combined with avoir or être, the participe passé forms the passé composé, plus-que-parfait, futur antérieur, conditionnel passé, subjonctif passé, etc.:
J'ai parlé avec elle hier soir.
I spoke with her last night.
Quand je suis rentrée, ils étaient déjà partis.
When I got home, they had already left.
As a passive adjective
The participe passé can describe a noun in a state resulting from an action. It then agrees in gender and number, like any adjective:
Une lettre écrite à la main a quelque chose de précieux.
A handwritten letter has something precious about it.
Les fenêtres ouvertes laissaient entrer une brise légère.
The open windows let in a light breeze.
Agreement rules — the briefest possible summary
- With être, the participe passé agrees with the subject: elle est partie, ils sont arrivés.
- With avoir, the participe passé agrees with the preceding direct object: les pommes que j'ai mangées (object les pommes precedes mangées, so it agrees), but j'ai mangé les pommes (no preceding object, no agreement).
- As an adjective, the participe passé agrees with whatever noun it modifies, like any adjective.
For details, see Past Participle Overview.
English speakers' biggest trap: the -ing problem
English fuses several functions into the -ing form: gerund (Swimming is fun), present participle (the swimming pool), progressive (I am swimming), and adverbial (I left, smiling). French distinguishes these clearly, and the temptation to use a participe présent for all of them produces a string of typical errors.
| English | Wrong French | Right French | Form used |
|---|---|---|---|
| Smoking is prohibited. | *Fumant est interdit. | Fumer est interdit. | Infinitive as subject |
| I am working. | *Je suis travaillant. | Je travaille. / Je suis en train de travailler. | Simple present |
| While eating, he talks. | *Il parle mangeant. | Il parle en mangeant. | Gérondif |
| Before leaving, I locked the door. | *Avant partant, ... | Avant de partir, ... | Infinitive after preposition |
| After eating, we left. | *Après mangeant, ... | Après avoir mangé, ... | Past infinitive |
The pattern: English -ing rarely maps to French -ant. Most of the time it maps to an infinitive (especially after prepositions) or to a finite tense.
Quick-reference table
| Form | Marks | Example | Use |
|---|---|---|---|
| Finite (conjugated) | person, number, tense, mood | nous parlions | main verb of clause |
| Infinitif | none | parler | after modals, prepositions, as noun, instructions |
| Participe présent | (agrees as adjective) | parlant | adjective; literary verbal use |
| Gérondif | none | en parlant | simultaneity, means (same subject) |
| Participe passé | (agrees as adjective / with auxiliary rules) | parlé | compound tenses, passive adjective |
Common Mistakes
Mistake 1: Using -ant for an English progressive.
❌ Je suis travaillant maintenant.
Incorrect — French has no parallel to English present continuous.
✅ Je travaille maintenant.
I'm working now.
Mistake 2: Using the participe présent after a preposition.
❌ Avant partant, j'ai éteint les lumières.
Incorrect — prepositions take an infinitive, not a -ant form.
✅ Avant de partir, j'ai éteint les lumières.
Before leaving, I turned off the lights.
Mistake 3: Using the gérondif when the subject is different.
❌ J'ai vu Marie en sortant du métro (intending: Marie was the one coming out).
Incorrect — the gérondif's subject is the main-clause subject, so this means 'I came out and saw Marie'.
✅ J'ai vu Marie qui sortait du métro.
I saw Marie coming out of the metro.
Mistake 4: Treating an infinitive as a singular verb that needs a subject.
❌ Il fumer est mauvais pour la santé.
Incorrect — no extra subject needed.
✅ Fumer est mauvais pour la santé.
Smoking is bad for your health.
Mistake 5: Using the simple participe passé in compound forms after a preposition.
❌ Après mangé, nous sommes sortis.
Incorrect — après requires the past infinitive (avoir/être + participe passé).
✅ Après avoir mangé, nous sommes sortis.
After eating, we went out.
Key takeaways
The finite/non-finite split is the hidden architecture of French verb usage. Finite forms carry agreement and serve as main verbs; non-finite forms (infinitive, participe présent, gérondif, participe passé) plug verbal ideas into a sentence without requiring a subject of their own.
For English speakers, the single most important habit to develop is suppressing the urge to translate -ing with -ant. After prepositions, you need an infinitive. For ongoing actions, you need a finite tense. The -ant form, by itself, is a literary or adjectival creature that you will read more often than you produce.
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Start learning French→Related Topics
- Le Gérondif: Overview of the French GerundA2 — The French gérondif — *en* + the *-ant* form of the verb — packs three jobs into one tidy construction: simultaneity ('while doing X'), means ('by doing X'), and condition ('if you do X'). It is everywhere in spoken French, and English speakers need it to break free of clumsy *pendant que* paraphrases.
- L'Infinitif: OverviewA2 — The French infinitive is the bare verb form (parler, finir, vendre, faire). It is the dictionary entry, the most syntactically flexible form of the verb, and the form English speakers most often misuse — usually because they reach for the '-ing' form where French wants the bare infinitive.
- Le Participe Passé: OverviewA2 — The past participle (parlé, fini, vendu, fait) is the second most syntactically active verb form in French after the infinitive. It builds every compound tense, the passive voice, and dozens of adjectives and absolute constructions. This page is the map of what it is and what it does.
- Participe Présent vs GérondifB2 — The participe présent and the gérondif look identical (both end in -ant) but behave like two completely different parts of speech. The participe présent is adjectival; the gérondif is adverbial. Mixing them up is one of the most common B2-level errors.
- The Three Conjugation Groups: -er, -ir, -reA1 — How French verbs sort into the 1er, 2e, and 3e groupes — and why one group has 90% of the verbs and another is everything that doesn't fit.