英文：写给大客户感谢信要求要写出感谢他们今年对于公司的支持,并且希望与他们保持良好的商业互动,从而争取明年的合作机会.

Dear Bob (or Mr.Smith or Bob Smith)
Thank you for choosing Murphy's Cleaning Services (or insert name of your company).Your business is appreciated,and we are proud to be your new cleaning service (insert your service) provider (alternative words also company).Thanks again.
Sincerely,
Dave Murphy
Owner and Operator (Insert Your Title)