表示感謝的英文短句有：
1. Thank you.
2. Thank you very much.
3. I am grateful for your help.
4. I appreciate your assistance.
5. Many thanks.
6. Your help is much appreciated.
7. I am truly sorry, but thank you all the same.
8. It's very kind of you.
9. Many thanks for your help.
10. I owe you one.
以上就是一些常用的表示感謝的英文短句，你可以根據具體情況選擇使用。