French grammar: emploi du subjonctif passé

What this grammar point covers

The 'subjonctif passé' is a French verb tense used to express actions that are uncertain, possible, or subjective, but that happened before the present moment or before another action.

When to use it

Use the subjonctif passé in French when you want to talk about something that may have happened in the past, especially after expressions of doubt, emotion, necessity, or possibility. It is often used when the main clause is in the present and the action in the subordinate clause happened before.

Key forms

• Avoir/Être au subjonctif présent + participe passé du verbe
• Exemples : que j'aie fini, que tu sois parti

Examples

Tips

• Always use the present subjunctive of 'avoir' or 'être' plus the past participle.
• Remember to choose 'être' as the auxiliary for reflexive verbs and verbs of movement, just like in passé composé.
• Be careful with agreement: with 'être', the past participle agrees in gender and number with the subject.

Exceptions and edge cases

• Some verbs use 'être' instead of 'avoir' as the auxiliary (mainly verbs of movement and reflexive verbs).
• A few past participles are irregular (for example: 'eu', 'été', 'fait', 'pris').