一、作文模板
开头段：自我介绍，说明写信目的
Dear ______（收信人称呼）,
I am ______（自我介绍）. I am writing to express my dissatisfaction with ______（投诉的事由）.
例如：Dear Manager,
I am a regular customer of your restaurant. I am writing to express my dissatisfaction with the service I received last night.
中间段：具体描述问题
On ______（具体时间），I ______（具体经历）. However, ______（问题描述）.
例如：On Saturday night, I dined at your restaurant with my family. However, the service was extremely slow and unresponsive.
中间段：进一步说明问题的影响
This poor service caused ______（问题的影响）. For example, ______（具体影响）.
例如：This poor service caused us a lot of inconvenience. For example, we had to wait for more than 30 minutes before our food arrived, and the dishes were cold when we finally received them.
中间段：提出改进建议
I believe that ______（建议1）. Additionally, ______（建议2）.
例如：I believe that your staff should receive better training to improve their efficiency and attentiveness. Additionally, it would be helpful to have more staff on duty during peak hours to ensure timely service.
结尾段：表达期望和感谢
I hope that you will take my complaint seriously and take appropriate measures to improve the situation. Thank you for your attention to this matter.
例如：I hope that you will take my complaint seriously and take appropriate measures to improve the situation. Thank you for your attention to this matter.
结束语：
Best regards,
Your Name
例如：
Best regards,
Li Hua
 
二、真题示例
题目：Write a letter to the manager of a hotel to complain about your recent stay.
范文：
Dear Manager,
I am writing to express my dissatisfaction with my recent stay at your hotel. I had high expectations, but unfortunately, my experience was far from satisfactory.
On the first night, I checked into Room 305. However, the room was not cleaned properly. There were stains on the bed sheets and trash in the bathroom. Additionally, the air conditioning system was not working properly, making the room uncomfortably hot.
This poor condition of the room caused us a lot of discomfort. For example, we had to spend extra money on laundry services to clean our clothes, and we had trouble sleeping due to the heat.
I believe that your hotel should implement stricter cleaning protocols to ensure that rooms are properly maintained. Additionally, it would be helpful to have a more efficient system for addressing guests' complaints promptly.
I hope that you will take my complaint seriously and take appropriate measures to improve the situation. Thank you for your attention to this matter.
Best regards,
Li Hua
 
三、中文翻译解析
翻译：
尊敬的经理：
我写这封信是为了表达我对最近在贵酒店住宿的不满。我对这次住宿抱有很高的期望，但遗憾的是，我的体验远未达到预期。
在第一天晚上，我入住305房间。然而，房间没有打扫干净。床上有污渍，浴室里有垃圾。此外，空调系统也不工作，房间非常热。
房间的糟糕状况给我们带来了很大的不便。例如，我们不得不额外花钱使用洗衣服务来清洗衣物，而且由于炎热，我们很难入睡。
我认为贵酒店应该实施更严格的清洁协议，以确保房间得到妥善维护。此外，建立一个更有效的系统来及时处理客人的投诉也会很有帮助。
希望您能认真对待我的投诉，并采取适当的措施来改善这种情况。感谢您对这件事的关注。
此致，
敬礼！
李华
解析：
开头段：通过自我介绍和说明写信目的，引出投诉的事由，让收信人明确信件的主题。
中间段：具体描述问题及其影响，通过举例说明，使投诉显得具体且有理有据。
中间段：提出具体的改进建议，条理清晰，具有可操作性。
结尾段：表达期望和感谢，使信件显得礼貌且诚恳。

四、写作技巧
格式规范：投诉信的格式要规范，包括称呼、正文、结束语和署名。
明确目的：开头段要清晰地说明写信的目的，让收信人明白投诉的事由。
具体问题：中间段描述问题时，尽量具体、详细，通过举例说明，使投诉显得有理有据。
合理建议：提出建议时，要具体、可行，避免空洞的建议。
礼貌诚恳：结尾段要表达期望和感谢，使信件显得礼貌且诚恳。