证明材料一般出自有关单位，文字应规范、严谨，并加盖有效印章。申请者应提供的证明材料主要有以下几种：
1.学历、学位证明，主要是大学、研究生毕业证书，硕士学位证书，博士学位证书；
2.成绩单，成绩单是任何申请人都必须提供的，我国大专院校的成绩评定大多采用百分制，而美国则以采用等级制为多，其平均值通常用平均成绩点数（GPA）表示，因此，必须注明所采用的记分方法，最好能提自己在班级所排名次，现在，美国大多数学校都要求申请者通过ETS直接提供TOEFL或GRE成绩：
3.财力证明；
4.体检表和健康证明，一般应由指定级别的医院出具；
5.学业（术）奖励和工作证明，一般学校尽管不作要求，但获得过奖励和有过实际工作经验的申请者，在录取时必定会得到优先考虑，这一点在申请助教、助研及奖学金时尤为重要。
范例1大学毕业证书
Let it be known that Mr. Wang Chumming, native of Shandong Province, born on January 17, 1962, having specialized in seismological geology in the Geology Department of Changchun University from October, 1978 to July, 1982 and having completed the four year undergraduate program with qualified standing, is hereby awarded this Certificate of Graduation.
范例2研究生毕业证书
Mr. Kang Jiangrong was born in Hangzhou, Zhejiang Province in April, 1968. From September 1985 to December 1989, he was a postgraduate student in our institute, majoring in Textile Machinery, He fulfilled his study plan, and passed oral examination on his thesis in July 1989. He was allowed to graduate.
范例3硕士学位证书
Certificate of Master Degree University of Shanghai
We the undersigned hereby certify that Mr. Jiang Shan having fulfilled the requirements of the Ordinances and Regulations of the University was by the University authority admitted to the Degree of Master of Science in Electronic Engineering at a Congregation held in the University on July 14, 1989.
范例4国家教委出具的公费留学财力证明
PEOPLE'S REPUBLIC OF CHINATO Whom It May Concern:This is to certify that Mr. Wan Li, born, June 17, 1960, a native of People's Republic of China, graduated from Tsinghua University, and he has been awarded a government scholarship by this commission for studying abroad.The scholarship is for two academic years. covering his / her living costs, full tuition required by the host university, round trip travelling expenses, as well as other miscellaneous fees.The money will be
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