I would have...
Si j'avais eu un peu plus d'argent, je l'aurais acheté.
If I had had a little more money, I would have bought it.
Je l'aurais fait si elle était moins fière.
I would have done it if she were less proud.
— Harry Potter et la Coupe de feu (2005)
Quand je l'aurais sauvé, je lui arracherai tous les cheveux, ça va faire mal !
Once I’ve saved him, I’ll pull all his hair out—it’s going to hurt!
— Demon Slayer : Kimetsu no Yaiba - Le film : Le train de l'Infini (2020)
Je l'aurais fait moi-même si j'avais eu plus de temps.
I would have done it myself if I had had more time.
How would I have known?
I would have known.
J'étais assis à côté de lui, je l'aurais vu.
I was sitting next to him; I would have seen him.
— Les Quatre Cents Coups (1959)
I would have bet on it.