why he is crying
Она спросила у него, почему он плачет.
She asked him why he was crying.
I don't know why he's crying.
Мальчик рассказал мне, почему он плачет.
The boy told me why he was crying.
Она спросила его, почему он плачет, но он не ответил.
She asked him why he was crying, but he didn’t answer.