以下是一些表示開心的英文金句：
1. I am so happy!
2. I couldn't be any happier!
3. I am so excited!
4. I am feeling on top of the world today!
5. I am thrilled beyond belief!
6. Life couldn't be better!
7. I am in a blissful mood!
8. I am feeling elated!
9. I am on a high note today!
10. Everything is going great today!
希望這些句子能夠幫助您表達開心的情緒。