dear___________,
i am writing to formally request to___________(请求的内容)
the reason for_____is that______(给出原因).i_____, so i_____(给出细节)
i would also like to request______(提出进一步的要求). i am sorry for any inconvenience i have caused.
thank you for your attention to these requests. if you have any questions, do not hesitate to contact me at _______(电话号码).i look forward to a favorable reply.
yours sincerely
li ming