[解析]
Dear Sir or Madam,
I am Li Hua, a senior three student applying to be a volunteer for receiving the exchange students from Britain.(自我介绍)
To begin with, I have the qualifications for the work, for I have a good knowledge of spoken and written English, which enables me to communicate with English speakers freely.【高分句型一】 Besides, I also have the right personality for the activity. I'm easygoing and good at communicating with people.(个人优势) What's more, I have great experience in receiving exchange students, since my family volunteered to host Australian students last year.【高分句型二】 Thus, I am convinced that I am capable of this work.(相关经验)
Thank you for considering my application and I am looking forward to your early reply.
Yours sincerely,
Li Hua