允许我向您升任贸易部长表示祝贺。多年来你对国家的贡献被认可，欣赏，我非常高兴。我们祝愿您在新的职位取得成功，期待我们两国在贸易发展上进一步合作。

诚挚的

回信

Dear Mr. / Ms,

Thank you for your letter conveying congratulations on my appointment. I wish also to thank you for the assistance you have given me in my work and look forward to better cooperation in the future.

Sincerely

尊敬的先生/小姐，

感谢你来信对我的任命表达的祝贺。我也感谢您对我的工作给予的支持，并期望未来能有更好的合作。

诚挚的

证明

证明书种类很多，有工作经历证明、工作经验证明、病情证明、留学生经济担保书、学业成绩证明书等等，是用来证明一个人的身份、学历、婚姻状况、身体情况等或某一件事情的真实情况。证明信的写法通常也采用一般信件格式，但多省掉收信人的姓名、地址和结束用语。称呼多用“To Whom It May Concern”意即“有关负责人”，但此项也可省略。写证明书要求言简意赅。

医生证明书

Doctor’s Certificate

June. 18, 2000

This is to certify that the patient, Mr. Tomas, male, aged 41, was admitted into our hospital on June. 9, 2000, for suffering from acute appendicitis. After immediate operation and ten days of treatment, he has got complete recovery and will be discharged on June. 19, 2000. It is suggested that he rest for one week at home before resuming his work.

Jack Hopkins

Surgeon-in-charge

医生证明书