问候Greeting●不知收件人：To whom it may concern, （敬启者）Dear Sir or Madam,●知头衔/职位/性别：Dear Prof.（教授）/Dr.（博士）+ 姓Dear Mr/Mrs/Ms + 姓
开头●首先表示感谢Thank you for reaching out to us regarding …Thank you for your email…感谢你的来信…Thank you for calling me yesterday to discuss…感谢昨天你来电讨论…●其次告知邮件重点I am writing to inquire…I am writing in reference to… I am writing to confirm/ enquire/ inform you…我写信时要确认/询问/通知你…I am delighted to give you the detail about…我很开心能给你提供…的详情
结尾Closing●常用的表达：If you have any further questions or concerns, please don’t hesitate to contact me.Thank you for your time and consideration.I look forward to hearing from you.期待你的回信。I hope this information is helpful.希望这些信息有用。Please call me if you have any question.如果你有任何问题，请给我电话。
●结尾祝福语以下词汇在正式场合及非正式场合均可使用Sincerely, Sincerely Yours,Yours SincerelyRegards, Best RegardsYours， Yours Truly， TrulyBest， Best Wishes
商业信函中应注意使用书面语，简洁清晰，切勿拖沓
多用委婉客气的语气，重要内容可加粗
尽量不要使用缩写