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