Master the French Passive Voice: Formation, Rules, and Usage

Mastering advanced grammatical structures is a crucial milestone for any French learner aiming for upper-intermediate or advanced fluency (CEFR B2/C1). Among these structures, the French passive voice (la voix passive) is an essential tool for shifting emphasis, writing formal reports, and reading journalistic or academic French.

While the underlying concept mirrors the English passive, French has strict grammatical requirements regarding verb tenses, past participle agreement, and preposition choice. In this guide, you will learn how to form the passive voice, when to use it, and when native speakers prefer natural alternatives.

1. Active vs. Passive Voice in French: The Basics

In both English and French, grammatical voice dictates the relationship between the subject and the action of the verb:

  • Active Voice (la voix active): The subject performs the action.
  • Le chef prépare le repas. (The chef prepares the meal.)
  • Passive Voice (la voix passive): The grammatical subject receives the action.
  • Le repas est préparé par le chef. (The meal is prepared by the chef.)

The passive voice is primarily used when the action itself—or the entity undergoing it—is more important than the agent performing it, or when the agent is unknown or irrelevant.

2. How to Form the Passive Voice: Step-by-Step

Transforming an active French sentence into a passive one requires three precise structural shifts:

1. The Direct Object (COD) of the active sentence becomes the Subject of the passive sentence.

2. The Active Verb is transformed into a compound structure: the auxiliary verb être followed by the past participle of the original main verb.

3. The Active Subject becomes the agent complement (complément d'agent), usually introduced by par (by).

The Core Formula

$$\text{[New Subject]} + [\text{Être (in the original tense)}] + [\text{Past Participle}] + [\text{par / de}] + [\text{Agent}]$$

Active Example: Les étudiants terminent le projet. (The students finish the project - Present tense)

Passive Transformation: Le projet (New Subject) + est (Être in present) + terminé (Past Participle) + par les étudiants (Agent). $\rightarrow$ Le projet est terminé par les étudiants.

3. Tense Agreement: Conjugating "Être"

A common pitfall for non-native speakers is choosing the wrong form of être. Always remember: the verb être must be conjugated in the exact same tense and mood as the verb in the original active sentence.

Here is how the transformation works across common French tenses:

4. Crucial Rule: Past Participle Agreement

Tense Active Voice Passive Voice
Présent Le jury choisit le gagnant. Le gagnant est choisi par le jury.
Passé Composé Le jury a choisi le gagnant. Le gagnant a été choisi par le jury.
Imparfait Le jury choisissait le gagnant. Le gagnant était choisi par le jury.
Futur Simple Le jury choisira le gagnant. Le gagnant sera choisi par le jury.
Plus-que-parfait Le jury avait choisi le gagnant. Le gagnant avait été choisi par le jury.
Conditionnel Présent Le jury choisirait le gagnant. Le gagnant serait choisi par le jury.
Subjonctif Présent ...qu'il choisisse le gagnant. ...que le gagnant soit choisi par le jury.

Because the passive voice exclusively uses the auxiliary verb être, the past participle must always agree in gender and number with the grammatical subject of the passive sentence:

  • Add -e for feminine singular: La décision est prise par le directeur.
  • Add -s for masculine plural: Les colis sont livrés par le coursier.
  • Add -es for feminine plural: Les invitations ont été envoyées par la mairie.

Failing to make this agreement is one of the most penalizing mistakes on French grammar certifications.

5. Agent Prepositions: When to Use "De" Instead of "Par"

While par corresponds directly to the English "by" in most cases, French uses de (or d') after specific categories of verbs:

A. Verbs of Emotion and Sentiment

  • aimer (to love), adorer (to adore), détester (to detest), respecter (to respect), craindre (to fear), estimer (to esteem).
  • Ce professeur est admiré de tous. (This teacher is admired by everyone.)
  • Elle est aimée de ses collègues. (She is loved by her colleagues.)

    • Verbs expressing emotional states or intellectual regard take de:

    B. Verbs of Description, State, and Spatial Arrangement

  • entourer (to surround), border (to border), couvrir (to cover), remplir (to fill), composer (to compose).
  • Le château est entouré d'une forêt. (The castle is surrounded by a forest.)
  • La pièce était remplie de fumée. (The room was filled with smoke.)

    • Verbs that describe static conditions rather than actions:

Note: If an active agent performs a deliberate action, par returns: Le gâteau a été couvert de chocolat par le pâtissier.

6. When Is the Passive Voice Impossible in French?

Unlike English, French is restrictive about which verbs can enter the passive voice. Only direct transitive verbs (verbs followed directly by a direct object without a preposition) can be made passive.

1. Intransitive Verbs: Verbs that take no object (arriver, partir, dormir, nager) cannot form a passive sentence.

2. Indirect Transitive Verbs: Verbs that take an indirect object introduced by à or de cannot be made passive in French.

  • English allows: "The doctor was phoned by Paul."
  • French forbids this because the verb is téléphoner à: You cannot say "Le médecin a été téléphoné". You must keep the active voice: Paul a téléphoné au médecin.

    • 7. Natural French Alternatives to the Passive

French stylistics favor active constructions. Native speakers actively avoid heavy passive sentences by using two common alternatives:

1. The Indefinite Pronoun "On"

  • Instead of: La clé a été trouvée dans le couloir.
  • Say: On a trouvé la clé dans le couloir. (Someone found the key in the hallway.)

    • When the agent is unknown, unspecified, or general, French speakers universally prefer on with an active verb:

    2. The Pronominal Passive (Reflexive Passive)

  • Instead of: Ce modèle est vendu partout.
  • Say: Ce modèle se vend partout. (This model sells everywhere.)
  • Le français se parle sur les cinq continents. (French is spoken across five continents.)

    • For inanimate objects, general truths, and processes, use the reflexive pronoun se:

    Final Checklist

  • Confirm the verb is direct transitive (takes a COD).
  • Put être in the identical tense of the active verb.
  • Agree the past participle with the new subject.
  • Select par for physical actions and de for states or feelings.
  • Consider using on or reflexive verbs for more natural expression.

    • To master the French passive voice, remember these key steps: