Sometimes when I am in the mood, I play the violin for friends.

有时当我有心情的时候，我就给朋友拉小提琴。

youdao

Failing the exam, I am in a mood today.

因为考试不及格，所以我今天心情很不好。

youdao

Plus, I am really not in the mood since I have to deal with the mess of living alone in a strange place.

而且，自从开始一个人在外地打拼以来，我要应付各种杂事，实在没那个心情（参加聚餐）。

youdao

If I have posted to the world that I am in a bad mood, you might try to cheer me up, or at least think twice about bothering me.

WSJ: The End of the Email Era

Tuesday night's mood among my friends reminded me of the elections in 1989 in Chile - where I am originally from - when we returned to democracy.

BBC: Eric Gamboa