在日常的工作和生活中，我们有时可能会遇到需要向他人发出正式警告的情况。这时，一封恰当且专业的警告信显得尤为重要。以下是一份英语警告信的模板，供您参考使用：

[Your Name]

[Your Position]

[Your Company/Organization]

[Your Address]

[City, State, ZIP Code]

[Email Address]

[Date]

[Recipient's Name]

[Recipient's Position (if applicable)]

[Company/Organization (if applicable)]

[Address (if applicable)]

[City, State, ZIP Code (if applicable)]

Dear [Recipient's Name],

Subject: Formal Warning Regarding [Specific Issue]

I am writing to formally warn you regarding your recent actions at [specific location or situation]. Your behavior has been observed and documented as follows:

[Provide a brief but detailed description of the issue, including dates, times, and specific examples.]

This behavior is unacceptable and does not align with our standards for [mention company values, policies, or expectations]. It is important that this matter be addressed promptly to prevent further incidents.

Please be advised that continued non-compliance with these standards may result in more severe disciplinary action, up to and including termination of employment.

I expect a written response from you within [number of days] days, outlining the steps you will take to rectify the situation and ensure that such behavior does not occur again.

Thank you for your cooperation and understanding. Please feel free to contact me if you have any questions or require clarification.

Sincerely,

[Your Name]

[Your Position]

请根据实际情况调整上述模板中的具体信息，以确保信件的准确性和适用性。这样的警告信既专业又礼貌，能够有效地传达您的关切并促使对方改正行为。

请注意，在撰写此类信件时，务必保持客观公正，并确保所有事实依据充分且无误。此外，建议在发送前咨询法律顾问或人力资源专家，以避免潜在的法律风险。