She was obviously in a mood.

显然她心情不好。

I was in a mood to celebrate.

我很想庆祝一番。

They appear to be in a mood to vote against office-holders in the elections.

在选举中他们似乎不想投身居要职者的票。

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。

Leave her alone. She is in a mood now.

别惹她，她现在情绪不好。