The French Causative: Faire + Infinitif and Laisser
In English, we say "I had my hair cut" or "She made him cry". In French, both notions of causing something to be done and having someone do something are expressed using the causative structure: faire + infinitif (and laisser + infinitif for permission). However, pronoun placement and agent marking follow strict rules that confuse even intermediate students.
⚡ The Causative Blueprint
Key Rule: Faire and the subsequent infinitive form an indissoluble verbal block. Pronouns never go between faire and the infinitive; they always precede the conjugated form of faire!
1. Who is Doing What? Direct (COD) vs Indirect (COI) Agent
The most common pitfall in French causative sentences is determining whether the person performing the action (the "agent") is treated as a direct object (le, la, les) or an indirect object (lui, leur with à).
| Case | Rule & Preposition | Full Noun Example | With Pronoun Replacement |
|---|---|---|---|
| Case A: Only 1 Object (Intransitive) | Agent is a Direct Object (COD) (No preposition) | Je fais rire mon frère. | Je le fais rire. |
| Case B: 2 Objects (Transitive Action) | Thing is COD; Agent becomes Indirect Object (COI) introduced by à or par | Je fais réparer la voiture à Paul. | Je lui fais réparer la voiture. Je la lui fais réparer. |
| Case C: Passive Agent (par) | Used when emphasizing who executes a formal task | J'ai fait peindre le salon par un artisan. | Je l'ai fait peindre par lui. |
2. The Golden Rule of Agreement: "Fait" Is NEVER Invariable!
🚨 The Absolute Invariance Rule (Académie Française)
When followed by an infinitive, the past participle fait is ALWAYS invariable. Even if a feminine or plural direct object pronoun precedes it, it NEVER agrees:
- *La maison que j'ai faite construire. (Wrong!)
- ✓ La maison que j'ai fait construire. (Correct: fait remains masculine singular)
- ✓ Ces robes ? Je les ai fait nettoyer. (Correct: no -es)
Note on "Laisser": Under traditional rules, laissé could agree if the object performed the action (Je les ai laissés partir), but the 1990 orthographic reform and modern French allow laissé to remain invariable as well (Je les ai laissé partir).
3. The Reflexive Causative: Se faire + Infinitif
When the subject causes an action to be done to themselves (or suffers an involuntary event like getting caught or robbed), French uses se faire + infinitif:
- Je me fais couper les cheveux. — I am getting my hair cut.
- Il s'est fait voler son passeport. — He had his passport stolen.
- Ils se sont fait renvoyer. — They got fired.
🧠 Interactive Causative French Quiz
Test your understanding of clitic pronoun placement and past participle agreement.