Past modals · Modaux du passé
Looking back with modals
- Past modals = modal verb + have + past participle.
- They let you guess, regret, or imagine about the past.
- He must have left. I should have called.
He must have forgotten the appointment; his calendar looked equally surprised.
Regarder en arrière avec des modaux
- Modaux passés = verbe modal + have + participe passé.
- Ils permettent de deviner, regretter ou imaginer le passé.
- Il doit être parti. J'aurais dû appeler.
Il a dû oublier rendez-vous ; son agenda avait l'air tout aussi surpris.
must have / can't have (deduction)
- must have + p.p. = you're sure it was true: He must have forgotten.
- can't have + p.p. = you're sure it wasn't: She can't have seen us.
- These are confident guesses about the past.
must have / can't have (déduction)
- must have + p.p. = vous êtes sûr que c'est vrai : Il a dû oublier.
- can't have + p.p. = vous êtes sûr que ce n'est pas arrivé : Elle n'a pas pu nous voir.
- Ce sont des suppositions sûres sur le passé.
He's not answering. He ___ his phone. (sure deduction) · Il ne répond pas. Il ___ son téléphone. (déduction sûre)
Past deduction → must have + past participle: “must have forgotten”. · Déduction au passé → must have + participe passé : “must have forgotten”.
Does “can't have + past participle” mean something was impossible in the past? · Est-ce que “can't have + participe passé” signifie que quelque chose était impossible dans le passé ?
Yes — “She can't have seen us” = it's impossible that she saw us. · Oui — “She can't have seen us” = il est impossible qu’elle nous ait vus.
Translate into English: 他一定是忘了。 · Traduisez en anglais : 他一定是忘了。
Sure about the past → must have + p.p.: “He must have forgotten.” · Sûr du passé → must have + p.p. : “He must have forgotten.”
should have (regret, criticism)
- should have + p.p. = "the right thing to do, but it didn't happen".
- I should have studied harder. (regret)
- You shouldn't have said that. (criticism)
should have (regret, critique)
- should have + p.p. = « la bonne chose à faire, mais cela n'a pas eu lieu ».
- J'aurais dû étudier plus dur. (regret)
- Tu aurais dû ne pas dire ça. (critique)
Regret: I ___ have studied harder. (one modal verb) · Regret : J’ ___ avoir mieux étudié. (un seul verbe modal)
Past regret → should have + past participle: “I should have studied”. · Regret au passé → should have + participe passé : “I should have studied”.
could have / might have (possibility)
- could / might have + p.p. = it was possible, but we're not sure.
- They might have missed the train. It could have been worse.
- could have can also mean "was able to, but didn't".
could have / might have (possibilité)
- could / might have + p.p. = c'était possible, mais on n'en est pas sûr.
- Ils ont peut-être raté le train. Cela aurait pu être pire.
- could have peut aussi signifier « aurait pu, mais ne l'a pas fait ».
What is the modal doing? · Que fait le modal ?
must/can't have = confident deduction; could/might have = open possibility; should have = criticism or regret. · must/can't have = déduction sûre ; could/might have = possibilité ouverte ; should have = critique ou regret.
Common mistakes
- ❌ He must forgot. → ✓ He must have forgotten. — past deduction = modal + have + participle.
- ❌ should of gone → ✓ should have gone. — of is a mis-heard have.
- ❌ I could help you yesterday, but I was busy. → ✓ I could have helped you. — unused past chance.
Erreurs courantes
- ❌ He must forgot. → ✓ Il must have forgotten. — déduction passée = modal + have + participe.
- ❌ should of gone → ✓ should have gone. — of est un malentendu de have.
- ❌ I could help you yesterday, but I was busy. → ✓ Je pouvais t'aider hier, mais j'étais occupé. — occasion passée non utilisée.
Match each sentence to its meaning. · Associez chaque phrase à sa signification.
must have = sure it happened; might have = maybe; should have = it didn't but ought to; can't have = sure it didn't. · must have = sûr que ça s’est produit ; might have = peut-être ; should have = ça ne s’est pas produit mais aurait dû ; can't have = sûr que ça ne s’est pas produit.
Complete (criticism): You ___ have told me earlier! · Complet (critique) : Vous ___ m’avoir dit plus tôt !
should have + participle = you didn't, and that was wrong. · should have + participe = tu n’as pas fait, et c’était faux.
- Sure about the past: must have / can't have + p.p.
- Regret / criticism: should(n't) have + p.p.
- Possibility: could / might have + p.p.
- Sûr du passé : must have / can't have + p.p.
- Regret / critique : should(n't) have + p.p.
- Possibilité : could / might have + p.p.
Write one sentence about a past regret, using “should have” + a past participle. · Écrivez une phrase sur un regret passé, utilisant “should have” + un participe passé.
Example: “I should have called you earlier.” · Exemple : “I should have called you earlier.”