Dear ______ ,
①I am writing to formally request to ______（请求的内容）.
②The reason for ______is that ______（给出原因）. ③I ______ , so I ______（给出细节）.
④I would also like to request ______（提出进一步的要求）. ⑤I am sorry for any inconvenience I have caused.
⑥Thank you for your attention to these requests. ⑦If you have any questions, do not hesitate to contact me at ______（电话号码）. ⑧I look forward to a favorable reply.
Yours sincerely,
Li Ming
http://m.tuzhexing.com/gaozhong/1193369/