Some examples of word usage: what happened
1. What happened yesterday that made you so upset?
昨日何があって、そんなに怒られたの?
2. I heard a loud noise outside. Do you know what happened?
外で大きな音が聞こえた。何が起こったの?
3. Can you explain to me what happened at the meeting this morning?
今朝の会議で何があったのか教えてくれる?
4. I haven't heard from Sarah in days. Do you know what happened to her?
数日間サラから連絡がない。彼女に何があったのか知ってる?
5. I saw a car accident on my way to work. It was terrible. Do you know what happened?
仕事に行く途中で車の事故を目撃した。ひどかった。何が起こったの?
6. I can't find my keys anywhere. What happened to them?
鍵がどこにも見つからない。何が起こったのかな?