Unit 12介紹信
　　社交、親友這間的相互介紹，常用介紹信聯系。收信人從介紹信中可以了解到來者是什么人，要辦什么事，有什么具體要求等。
　　 寫這類書要注意慎重、謙恭。在信封左下角常寫有To introduce ……或Introducing……,信封一般不封。
　　1. 介紹中學同學 Introducing a middle school classmate
　　Dear [Mr. Chang].
　　 The bearer, [Ms Huan], is a classmate of mine at middle school, who has recently been assigned to work in your city. [She] is well educated, having good habits and agreeable manners. Any assistance you may give [her] concerning [her] life will be esteemed as a great favor for me.
　　Yours truly,
　　親愛的[常先生]：
　　 持信人[黃女士]是我的一位中學同學，最近[她]被派往你市工作。[她]受過良好的教育，沒有不良的習慣，舉止端莊。您對[她]生活上的任何幫助，將使我感同身受。
　　 2. 介紹本人 Self-introduction
　　Dear [Sirs],
　　 From your advertisement in [yesterday’s USA Today] I find that you are wanting a [Chinese teacher] in your college. I beg leave to take the liberty of offering myself for the position.
　　 Born in [Beijing] in [1970], I am a graduate of [Beijing University], and therefore have a good knowledge both in Chinese and English.
　　 Should my application be regarded favorably, I shall endeavor to justify the confidence you may repose in me.
　　Faithfully yours,
　　親愛的[先生們]：
　　 [昨天《今日美國報》]載你院需[漢語教員]。我申請任此職務。
　　 我[1970年]出生于[北京]，畢業于[北京大學]，漢語和英語均有所長。
　　 如蒙錄用，自當竭誠服務，以答雅意。
　　 此致
　　敬禮！
　　 3. 去具體單位的介紹信 Letter of introduction with a known unit
　　 China travel Service
　　[April 15, 1993]
　　Bureau of Travel and Tourism
　　 Administration
　　Gentleman in Charge,
　　 The bearer of this letter is [Mr. Zhang Wen], who is entrusted with task of making the necessary arrangements with you for our going to your Bureau to attend the report on [Current affairs].
　　 Please favor [him] with an interview.
　　 茲介紹[張文先生]前往你處聯系有關我們去你局聽[形勢報告]的事宜，請予接洽為荷。
　　 此致
　　旅行游覽事業局
　　中國旅行社
　　 4. 去不明具體單位的介紹信 Letter of introduction without a know unit
　　[Beijing] University
　　[Oct. 9. 2004]
　　To whom it may concern,
　　 This is to introduce Mr [Hu Qang] and [Zhao Wei-guo] who are to make an investigation of [Lie Ping’s] family condition on our instructions. We should esteem it a great favor if you would afford [them] the necessary information. With high respect.
　　茲介紹[胡強]和[趙衛國]二位先生前往你處了解有關[劉萍]的家庭情況，請予接洽為荷。
　　 此致
　　敬禮！