推荐信
Suppose you are a tutor. One of your students applied for postgraduate study at an American university. Write a letter introducing him to the professor of the university.
Dear Sir or Madam,
称呼：写给不认识的负责人
I take pleasure in recommending to you Mr. Wang Hao, who hopes to attend your university for postgraduate studies.
本句话独立成段，是本文的主旨句，表明了写信的目的：推荐学生。
（积累：take pleasure in …; attend a university）
Mr. Wang graduated from the Physics Department of Beijing University in 2009 and passed with honors in mathematics and in all major courses of physics. Mr. Wang is planning to go in for further st
