1.I present this gift as a token of our appreciation
我用这个礼物作为我们感激的象征

A:John, I present this gift as a token of our appreciation for what you've done for us.
B:You shouldn't have done this. I just did what I should have done.

A：约翰，我用这个礼物作为象征，对你为我们做的一切表示感激。
B：你不用这样，我只是做了分内该做的事情。

2. I regret 我很遗憾

A: I regret for what happened to you.
B: You just regret? What are you going to do?

A：我对你的事表示遗憾。
B：只是遗憾吗？你会做些什么（来弥补）吗？

3.I want to say a huge "Thank you!" to...
我想对……说万分地感谢你。

A: After forty years of service, Mike is retiring from our company. I want to say a huge "Thank you!" to Mike.
B: Thank you so much for your appreciation.

A：工作了四十年后，迈克就要从我们公司退休了，我要向迈克说，万分地感谢你！
B：非常感谢你的赞赏。

4.I want you to know how much we appreciate
我想要你知道我们有多感激

A: I want you to know how much we appreciate your help.
B: It's my pleasure.

A：我想要你知道我们有多感激你的帮助。
B：这是我的荣幸。

5.I was truly touched 我真的感动

A: I was truly touched by what I've seen.
B: What a dedicated worker he is.

A：我真的对我所见到的很感动。
B：他是一个多么有献身精神的工人啊！