Third and mixed conditionals · Troisième et conditionnels mixtes
Imagining a different past
- The third conditional imagines a past that didn't happen.
- If I had studied, I would have passed. (but I didn't, so I failed)
- It often expresses regret or blame.
If I had left earlier, I would have spent more time waiting at the station.
Imaginer un passé différent

- Le conditionnel troisième imagine un passé qui n'est pas arrivé.
- If I had studied, I would have passed. (mais non, donc j'ai échoué)
- Il exprime souvent un regret ou un reproche.
Si je fus parti plus tôt, j'aurais passé plus de temps à attendre à la gare.
Third conditional
If + past perfect, would have + past participle.- For an unreal past — the opposite of what really happened.
- If they had left earlier, they would have caught the train.
Conditionnelle du troisième type
If + past perfect, would have + past participle.- Pour un passé irréel — l'opposé de ce qui s'est vraiment passé.
- If they had left earlier, they would have caught the train.
Complete the third conditional: If I had studied, I ___ the exam. · Complétez le troisième conditionnel : If I had studied, I ___ the exam.
Third conditional: If + past perfect, would HAVE + past participle. · Troisième conditionnel : If + plus-que-parfait, would HAVE + participe passé.
Complete: If they had left earlier, they would have ___ (catch) the train. · Complétez : If they had left earlier, they would have ___ (catch) the train.
would have + past participle: catch → caught. · would have + participe passé : catch → caught.
Translate into English: 如果我当时学习了,就会通过考试了。 · Traduisez en anglais : 如果我当时学习了,就会通过考试了。
Unreal past → third conditional: “If I had studied, I would have passed.” · Passé irréel → troisième conditionnel : “If I had studied, I would have passed.”
Mixed conditional
- A past cause with a present result.
If + past perfect, would + base verb.- If I had saved money, I would be rich now. (would, not would have)
Conditionnelle mixte
- Une cause passée avec une conséquence présente.
If + past perfect, would + base verb.- If I had saved money, I would be rich now. (would, pas would have)
Third or mixed? Watch the result · Troisième ou mixte ? Regardez le résultat
Both start with 'if + past perfect' — the RESULT clause decides: past result → third, present result → mixed. · Les deux commencent par 'if + plus-que-parfait' — c'est la clause du RÉSULTAT qui décide : résultat passé → troisième, résultat présent → mixte.
Mixed (past cause → present result): “If I had saved money, I would be rich now.” Correct? · Mixte (cause passée → résultat présent) : “If I had saved money, I would be rich now.” Correct ?
Yes — past perfect in the if-clause, “would + base verb” for the present result. · Oui — plus-que-parfait dans la clause if, “would + verbe infinitif” pour le résultat présent.
All conditionals at a glance
- Zero / first: real (present + will).
- Second: unreal present (past + would).
- Third: unreal past (past perfect + would have).
Toutes les conditionnelles en un coup d'œil
- Zéro / premier : réel (présent + will).
- Second : présent irréel (passé + would).
- Troisième : passé irréel (past perfect + would have).
Common mistakes
- ❌ If I would have known, I would have come. → ✓ If I had known… — no would in the if-clause.
- ❌ If I had studied, I would pass yesterday. → ✓ …I would have passed. — a past result needs would have.
- Decode I'd: + past participle = had; + have + participle = would.
Erreurs courantes
- ❌ If I would have known, I would have come. → ✓ Si j'had known… — pas de would dans la proposition introduite par if.
- ❌ If I had studied, I would pass yesterday. → ✓ … j'would have passed. — une conséquence passée nécessite would have.
- Décoder I'd : + participe passé = had ; + have + participe passé = would.
Match each if-clause to its result. · Reliez chaque clause if à son résultat.
Past cause → present result = mixed; past cause → past result = third; unreal now = second. · Cause passée → résultat présent = mixte ; cause passée → résultat passé = troisième ; irréel présent = second.
If she ___ the bus, she would have been on time.
Third conditional: If + past perfect, would have + participle. · Troisième conditionnel : If + plus-que-parfait, would have + participe passé.
- Third conditional (unreal past): If + past perfect, would have + p.p.
- Mixed (past cause → present result): If + past perfect, would + base verb.
- The if-clause's tense tells you which conditional it is.
- Conditionnel troisième (passé irréel) : If + past perfect, would have + p.p.
- Mixte (cause passée → conséquence présente) : If + past perfect, would + infinitif.
- Le temps de la proposition introduite par if vous indique quel conditionnel c'est.
Think of a past regret. Write one third-conditional sentence (If + past perfect, would have + past participle). · Pensez à un regret passé. Écrivez une phrase au troisième conditionnel (If + plus-que-parfait, would have + participe passé).
Example: “If I had woken up earlier, I wouldn't have missed the bus.” · Exemple : “If I had woken up earlier, I wouldn't have missed the bus.”