I would know
Il me semble que je le saurais si Harry Potter était chez moi.
I think I would know if Harry Potter were at my house.
— Harry Potter et le Prince de sang-mêlé (2009)
Je ne sais pas comment mais je le saurais.
I don't know how, but I'll find out.
— मुन्ना भाई एम बी बी एस (2003)
Tu croyais que je le saurais pas ?
You thought I wouldn't know?
Je le saurais si mon meilleur ami était dans ma chambre.
I would know if my best friend were in my room.
— Harry Potter et le Prince de sang-mêlé (2009)
Je le saurais si tu m'avais expliqué !
I would know if you had explained it to me!
— Les Invasions barbares (2003)
I would know.