1. I'm so depressed. 我很郁悶。
2. I feel so upset. 我覺得很沮喪。
3. I'm in a bad mood today. / I'm moody today. 我今天心情不好。
4. I feel kind of blue today. 我今天有點「郁悶」。
5. I feel low today. 我今天心情（有點）低落。
6. I'm so down. 我心情很低落。
7. I'm a bit down in the mouth today. 我今天有點悶悶不樂的。
8. I've been down in the dumps recently. 我最近很「郁悶」。
9. I can't put my finger on what's wrong. 我不曉得什么地方不對勁兒。
10. Sorry, I got up on the wrong side of the bed today. 抱歉，我今天心情不好。