一般来说国外实习证明都是中英文双语版本，当然，这个和具体出国到那个国家有直接关系，如果去俄罗斯就应该是中俄双语，以此类推。
具体的写法，格式详见如下范例：
1、中文版：
兹有南京农业大学 XX专业 XX 同学于**年**月**日至**年**月**日在中国民生银行南阳分行实习。
该学生在我行实习期间，主要从事公私业务、运行业务的实习工作。学习柜台公私业务简单的操作流程及注意事项、大堂对客户的服务与维护、跟从客户经理及业务顾问对客户进行信息维护及推广产品服务等工作。
特此证明
中国民生银行南阳分行
**年**月**日
2、英文版：
This is to certify that student **, majoring at *** in Nanjing Agricultural University, has interned at China Minsheng Banking Corp. Ltd. Nanyang Sub-branch from July 1, 2011 to August 30, 2011.During the internship at our bank, this student mainly engages in the work of Public & Private business and operation business. Learn notes and simple operation procedure of counter Public & Private business; service and maintenance for customers and the hall; the work of conducting information maintenance and service of promoting products following customer manager and sales consultant.
Hereby certify.
China Minsheng Banking Corp. Ltd. Nanyang Sub-branch
date
来源：知乎
排版：Shelly Du
