grateful
1.I am very grateful to you for……非常感谢你
2.I should like to say how grateful I am.
我谨表示我深切的谢意.
3.I shall be grateful to you all my life.
我将一辈子感激你
4.I cannot express to you how grateful we are.我无法向你表达出我们是多么的感激
appreciate
用法：appreciate sth/doing sth
appreciate that(从句）
例句：I appreciate your congratulations and good wishes.我非常感谢你的祝贺和良好祝愿.