I don't understand
Je ne comprends tout simplement pas.
I simply don't understand.
Je ne comprends aucune d'entre elles, et je ne veux pas savoir.
I don't understand any of them, and I don't want to know.
— Salé, Sucré (1994)
Je ne comprends absolument pas sa façon de penser.
I absolutely don't understand the way he thinks.
Je ne comprends sincèrement pas la question.
I honestly don't understand the question.
Je ne comprends plus rien à ce qu'ils racontent.
I don't understand anything they're saying anymore.
— Oh Boy (2012)
Je ne comprends rien à la politique.
I don't understand anything about politics.
— Femmes au bord de la crise de nerfs (1988)
Je ne comprends absolument rien.
I don't understand anything at all.
I really don’t understand.
Mais je ne comprends vraiment pas ça.
But I really don't understand that.
— Detective Chinatown (2015)