证明信包括下列几项：(1)你是以什么资格了解被证明人或被证明公司的。(2)你认识被证明人或被证明公司有多久了。(3)被证明人或被证明公司的可靠性和能力如何。

　　范文解析：

　　Directions: You are the Dean of the Biomedical Engineering Department of Big State University and your student Jane Doe, who is a Ph. D. of Biomedical Engineering now, has applied for the minority travel award by ICORR Committee and needs your certification of her education background and academic ambition.

　　Write the letter with on less than 100 words. Do not sign your own name at the end of the letter. Use “Wang Hua” instead. Do not write the address.

　　Dear ICORR Committee,

　　I am writing this letter to certify that Jane Doe is a graduate student in the Department of Biomedical Engineering at Big State University. She finished her master’s degree in our biomedical engineering program. She is currently a full-time student in good standing. She is working in my laboratory on a robotic device for rehabilitation after neurological injury. The paper she has submitted for presentation an ICORR is directly related to that research project. She would qualify for a minority travel award because she is of Native American heritage but would not qualify for the disability travel award.

　　Please consider her application for a travel award.

　　Department of Biomedical Engineering

　　Big State University

　　◆常用句式：

　　1、This is to certify that…

　　特此证明……

　　2、I hereby certify that…

　　特此证明……

　　3、Mr. Li was admitted into our hospital on…and will be discharged on…

　　李先生于……入住本院，将于……出院。

　　4、It is suggested that he rest for one week at home before resuming his work.

　　建议他在家休养一周后再工作。

　　5、Mr. Li Ming had fulfilled all the requirements prescribed by the syllabus of the Department.

　　李明同学达到了院系教学大纲规定的所有要求。

　　6、Mr. Li proved himself to be a diligent and valuable employee through hard work.

　　李先生通过努力证明自己确实是一名勤勉、有价值的员工。

　　7、With his friendly manners and loyalty he perfectly fitted into our team.

　　他的友善和忠诚使他很好地融入了我们的团队。

　　8、Mr. Li had no problem adjusting to the work in your company.

　　李先生会很快适应贵公司的工作的。

　　9、Mr. Li will surely prove adequate to the job in your company.

　　李先生绝对会证明自己能胜任这项工作。