would have
Me habría olvidado si no me hubiera acordado.
I would have forgotten if I hadn't remembered.
Si hubiera podido, me habría matado esta misma noche.
If I could have, I would have killed myself tonight.
— Harry Potter y la piedra filosofal (2001)
Si mi madre hubiera estado todavía viva, me habría ayudado en aquel entonces.
If my mother had still been alive, she would have helped me back then.
O no me habría quedado aquí contigo.
Or I wouldn't have stayed here with you.
— Los falsificadores (2007)
Sin vuestra ayuda me habría ahogado.
Without your help I would have drowned.