n'a pas compris
Pierre didn't understand any of it.
Pierre n’y a rien compris.
Mitya didn't understand English, the idiot.
Mitya ne comprenait pas l’anglais, cet idiot.
— Brother 2 (2000)
I pretended that I didn't understand.
J’ai fait semblant de ne pas comprendre.
Tom didn't understand Mary's joke.
Tom n’a pas compris la blague de Mary.
I think Tom didn't understand what you were saying.
Je pense que Tom n’a pas compris ce que tu disais.
I think Tom didn't understand you.
Je pense que Tom ne t’a pas compris.
Yanni didn't understand at first.
Yanni n'a pas compris au début.
Tu n’as pas compris !