I am most grateful, Your Highness.

我深表感激，殿下。

We are most grateful to you for the material your government gave to our people in time of difficulty.

对贵国政府在困难之际为我国人民惠赠物资表示感激。

I would be most grateful if you would send me the book immediately.

如果你能立即把这本书寄给我，我将不胜感激。

E. We are most grateful for your help in this matter.

非常感谢你们在此事上的帮助。

Should you grant me a personal interview , I would be most grateful .

如果你能给我面试的机会，我将不胜感激。

I would be most grateful if you could arrange an interview at your convenience.

方面时如蒙一个面试机会，本人将不胜荣幸。

I would be most grateful of you could lend due attention to this letter and contact me at…

如您能对此信给予一定的关注并通过……和我联系，我将非常感谢。

I would be most grateful if you could lend due attention to this letter and contact me at……

如您能对此信给予一定的关注并用……和我联系，我将非常感谢。

I am most grateful for your Loyal Addresses and the generous words of the Lord Speaker and Mr. Speaker.

我很感激主议长和议长先生的坦诚直言和赞美之词。