Japanese phrase
何があったの？ nan ga a tta no
Meaning
What happened?
When to use it
A casual question about a problem or unusual situation. It often shows concern when someone seems unhappy.
Example dialogue
元気がないね。何があったの？ gen ki ga na i ne nan ga a tta no
You do not seem okay. What happened?
大丈夫。宿題を忘れただけ。 dai jō bu shuku dai o wasu re ta da ke
I am okay. I just forgot my homework.