以下是一些負能量的英文短句：
1. It's a dark cloud over my head.
2. I'm feeling blue today.
3. Life is a struggle.
4. I'm feeling defeated today.
5. The world is a sad place right now.
6. Hope for the best, prepare for the worst.
7. Things could always be worse.
8. There's always tomorrow.
9. This just isn't my day.
10. It's all downhill from here.
請注意，負能量短句可能不太適合每個人或情況，請在適當的情況下使用。