【参考范文】 Dear Sir or Madam, 　　I am writing this letter to recommend one of my best friends, Jenifer Chen, for the position of bilingual assistant tutor in your international summer camp next month. 　　Jenifer was my classmate at the English Department in Shanghai Normal University and the chairperson of Student Union for her outstanding leadership skills and cheerful personality. Since graduation she has been a teacher at the Shanghai Yucai International High School. Her passion and sense of responsibility have won her great popularity among the students. 　　Therefore, I do not hesitate to recommend her as an ideal candidate for the post. You may contact me by sending email to hj123@126.com if you have any questions. Thank you！ 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Yours sincerely, 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Li Ming