Dear Professor Wang, 　　I am greatly honored to invite you to the Conference of English Language Teaching, which will be held on December 10, 2016 at the School of Foreign Languages, Peking University. 　　At the conference we will discuss various problems in English language teaching as well as further cooperation between two departments. We hope you can give us your advice about these aspects in the meeting. Since you are a very experienced professor in English language teaching, your speech will surely enrich our knowledge in this field. 　　We sincerely hope you can attend the conference. Hope to hear from you at your earliest convenience. 　　　　　　　　　　　　　　　　　　　　　Sincerely yours, 　　　　　　　　　　　　　　　　　　　　　 Li Ming