Dear Sir or Madam,尊敬的先生/女士：
On seeing your notice on the bulletin board,I feel excited to write this letter for the position. I have a good command of English and have been to the USA twice. As a result,I can communicate well with native English speakers. What's more,I am kind and friendly to other people,which makes it easy for me to get along with foreign students.看到您在布告栏上的通知，我感到很兴奋，我现在提笔写下这封信来应聘这个职位。我英语很好，去过美国两次。因此，我能和以英语为母语的人很好地交流。更重要的是，我对
他人体贴且友好，这使我很容易与外国学生相处。
I'm particularly interested in this position because I want to improve my oral English and communication skills.我对这个职位特别感兴趣，因为我想提高我的英语口语能力和沟通能力。
I hope you consider my application.我希望您考虑我的申请。
Looking forward to your reply.期待您的回复。
Kind regards,谨此致意，
Li Hua李华