The French subjunctive is governed by a single principle: specific verbs and phrases trigger it automatically. Learn those triggers and you will know when to use the subjunctive before you even think about how to conjugate it. It is not as rare or as complicated as most learners assume — at B2 and C1 level, it is simply expected.

What the Subjunctive Expresses

The subjunctive appears in a subordinate clause introduced by que when the main clause expresses emotion, doubt, necessity, will, desire, possibility, or concession. The key condition is that the subject of the main clause and the subject of the subordinate clause must be different. If they are the same person, use an infinitive instead.

How to Form the Present Subjunctive

For most verbs, the present subjunctive is formed by taking the third-person plural (ils/elles) present tense, removing the -ent, and adding these endings: -e, -es, -e, -ions, -iez, -ent.

This formula works for the majority of regular verbs and many irregular ones. The nous and vous forms (-ions, -iez) look identical to the imparfait — context distinguishes them.

Trigger Phrases That Always Require the Subjunctive

Memorise these categories. When you see or write one of these expressions before que, the subjunctive follows automatically.

  • Emotion and desire
  • Necessity and importance
  • Concession (always subjunctive — critical for exam writing)
  • Doubt and possibility

When NOT to Use the Subjunctive — Common Traps

Key Irregular Subjunctive Forms to Memorise

The most common French verbs have irregular subjunctive stems. These appear constantly in exam writing and listening — knowing them cold is non-negotiable at B2 and C1 level.

The Subjonctif Passé: One Extra Tense That Unlocks C1 Level



Once you can produce the present subjunctive reliably, adding the subjonctif passé requires almost no extra work — it is simply avoir or être in the present subjunctive, plus the past participle.

The subjonctif passé is used when the subjunctive action happened before the main clause action. Using it correctly in a DALF C1 response — where the present subjunctive alone is expected — adds a layer of tense precision that examiners recognise as C1-level grammatical range. Mastering soit and ait (the irregular subjunctive forms of être and avoir) is the essential first step.

How to Practise the Subjunctive Systematically

The fastest way to internalise the subjunctive is two-step: first, drill the conjugations of the common irregular verbs until the forms are automatic; second, write short paragraphs using trigger phrases from the list above, forcing yourself to produce the subjunctive in context rather than in isolated exercises.

Use the French Verb Conjugator to look up the full subjunctive table for any verb. Check the être and avoir subjunctive columns first — since both appear as auxiliaries in the subjonctif passé (bien qu'il soit parti, avant qu'elle ait fini), mastering their forms unlocks an entire tense, not just two verbs.