1. I still dare not mention you dare not think you I fear memories too crowded. 我还是不敢提你不敢想你 我怕回忆太过拥挤。

2. I feel so upset. 我觉得很沮丧。

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. 我今天有点“郁闷”。

5. I feel low today. 我今天心情（有点）低落。

6. I’m fed up. 我受够了。

7. It doesn’t take much to make me feel down. 一点小事就让我一天都郁闷难当。

8. I don’t give a damn. 我根本不在乎。我不屑一顾。

9. I got the short end of the stick. 我得到了最糟糕的结果。

10. I’m very tired, but i don’t know where i'm tired. if i can, i’d like to ask for a leave from the world. 我很累，却不知道哪里累，如果可以，我想跟世界请个假。

11. Because love, give up love, this silence is the most affectionate confession, i hope you can understand. 因为爱，割舍爱，这种静默才是最深情的告白，但愿你能明白。

12. The troubles of life are self seeking. It’s not that worry can’t leave you, but because你就腾不出手拥抱现在了。

13. Leave me alone! 心情不好的时候，最常见的体验就是不想别人来打扰自己。

14. Get off my back, I didn’t sleep last night. 再来烦我了，我昨晚没睡耶!

15. I have a hard time with my girlfriend. 我跟我女友关系非常不好。

希望这些句子能帮助你表达心情不好的情绪。