精选优质文档-倾情为你奉上感谢信开头段常用句式和套话I am writing to extend my sincere gratitude for.I am writing to express my thanks for.I am writing to show my sincere appreciation for.I would like to convey in this letter my heartfelt thanks to you for.I feel deeply indebted to you and I really dont know how to thank you enough for your help.感谢信结尾段常用句式和套话I must thank you again for your generous help.I am most grateful for your selfless donation.My true gratitude is be
