Thank you very much (very, very much) (ever so much) (most sincerely) (indeed) (from the bottom of my heart).[b]很(非常)(非常非常)(最真诚地)(确实)(衷心)感谢您。 Many thanks for your kind and warm letter.[b]感谢您友好而热情的来信。 Thanks a million (ever so much).[b]万分(非常)感谢。 Please accept ( I wish to express )my sincere (grateful) (profound) appreciation for ...[b]请接受(致以)真挚的(衷心的)(深切的)感谢…… I sincerely (deeply) (warmly) appreciate ...[b]我真挚的(深深的)(热情的)感谢…… I am very sincerely (most) (truly) grateful to you for ...[b]为了……，我非常真挚的(深深的)(真诚的)感谢您。 There is nothing more important (satisfying) (gratifying) to me than to receive one of your letters.[b]再也没有比收到您的来信更使我觉得重要(快慰)(感激)了。 Your letters are so much fun (comfort) (entertainment) (company).[b]您的来信充满了乐趣(给了很大安慰)(带来了欢乐)(使我不感寂寞)。 Your most courteous (considerate)(delightful)letter...[b]您那彬彬有礼(体贴入微)(令人欣慰)的来信…… I can not tell you how much your letter delighted(relieved)(amused)(enchanted)me.[b]我无法告诉您，您的来信使我多么高兴(宽慰)(觉得有趣)(陶醉)。