comprendre pourquoi
Mary didn't seem to understand why she had to do that.
Mary ne semblait pas comprendre pourquoi elle devait faire ça.
It's important to understand why.
Il est important de comprendre pourquoi.
I'm beginning to understand why Tom loves Boston.
Je commence à comprendre pourquoi Tom aime Boston.
I can not understand why he left so suddenly.
Je ne comprends pas pourquoi il est parti si soudainement.
When she gets older, she'll understand why you're working so hard.
Quand elle sera plus grande, elle comprendra pourquoi tu travailles si dur.
— Train to Busan (2016)
It is difficult to understand why you want to go.
Il est difficile de comprendre pourquoi tu veux partir.
Nous comprenons pourquoi.
Yanni didn't really understand why.
Yanni ne comprenait pas vraiment pourquoi.
Tom and Mary are never going to understand why people don't like them.
Tom et Mary ne comprendront jamais pourquoi les gens ne les aiment pas.
I couldn't understand why Tom wanted to quit school.
Je n’arrivais pas à comprendre pourquoi Tom voulait abandonner l’école.