【正确答案】Dear Sir/Madam,
[1]I am writing with an earnest request to win your support for my UCLA application for graduate admission.
[2]Two recommendation letters are fundamental to the success of my application, and I believe that one from you is definitely to add due weight. It was my great honor to have taken your course for a full semester, and [3]it is since your comprehensive introduction of American educational system that I have begun to be enchanted by the dream of studying in UCLA. My further academic exploration would bear little hope without your support.
[4]I am looking forward to your reply. May joy and health be with you all the time.

【答案解析】这是一篇请求信。要求考生给以前的外教写一封信，请求他为你写一封去美国加州大学洛杉矶分校读研究生的推荐信。根据题目要求，信件应当在开头点明给这位老师写信的目的；接着详细阐明这位老师在你学业生涯中的重要性，即为什么要找这位老师写推荐信；然后在信中表明你迫切需要得到他的帮助；最后以礼貌语结束邮件。 [1]以I'm writing with an earnest request to win your support开头，直接阐述此次写倩的目的和诚意。 [2]表达收信人及其推荐信的重要性，add due weight简短有力地说明收信人的份量。 [3]强调句it is…that突出阐明了收信人对写信人学业道路选择上的重要影响，收信人的支持将有莫大的帮助。 [4]提出希望尽快得到收信人的回复，并向收信人致以最诚挚的问候。