there would have been
Si c'était vrai, il y aurait eu des preuves.
If that were true, there would have been evidence.
— Terminator 2 : Le Jugement dernier (1991)
Dans cette équation, il y aurait eu rapport sexuel.
In this equation, there would have been sexual intercourse.
— Mystic River (2003)
Il y aurait eu une bagarre près de là, le soir du vol.
There may have been a fight nearby on the night of the theft.
— Tigre & Dragon (2000)