开头应该礼貌地称呼收信人,介绍自己的身份和写信的目的。
比如,Dear Sir/Madam, I am writing to you as a concerned citizen to seek your help regarding an issue that has been troubling me for some time.结尾应该感谢收信人的时间和帮助,并表达对问题的期望和希望。比如,Thank you for your attention to this matter. I hope that you can provide me with some advice or guidance on how to address this issue. I look forward to hearing from you soon.总之,开头要礼貌,简单明了地表达写信的目的;结尾要感谢,表达期望和希望,并期待回信。