以下是英语感谢信的模板及使用建议，综合多个权威来源整理而成：

一、通用模板结构

1. 开头

   • 引入感谢对象及感谢原因

   • 示例：

     Dear [Name],

     I am writing to express my sincere gratitude for [specific help/event]

2. 主体

   • 具体说明受助情况或事件细节

   • 表达感激之情的延伸说明

   • 示例：

     Your assistance in [specific task] was invaluable. It not only [improved my situation] but also [inspired me]

3. 结尾

   • 表达未来期望或再次感谢

   • 示例：

     • I shall always remember your kindness.

     • I hope to return the favor by [inviting you to an event]

二、分场景模板

1. 感谢导师/老师

   • 示例：

     Dear Professor [Last Name],

     I appreciate the opportunity to learn from you. Your guidance [enhanced my understanding] and [opened new perspectives] on [specific subject]

2. 感谢朋友/家人

   • 示例：

     Dear [Friend's Name],

     Thanks for always being there for me. Your support [helped me overcome] [specific challenge] and [strengthened our bond]

3. 感谢客户/合作伙伴

   • 示例：

     Dear [Client's Name],

     We are grateful for your trust in us. Your business [enabled us to grow] and [further our mission]

三、写作建议

1. 个性化表达 ：避免使用笼统的"beautiful gift"，具体描述礼物或帮助的细节（如"the beautiful roses you sent"）更能体现诚意；

2. 情感共鸣 ：通过"I fear that may not have happened"等句增强情感代入感；

3. 格式规范 ：

   • 称呼后使用逗号

   • 正文每段首行缩进

   • 结尾署名与日期格式正确

四、示例参考

完整感谢信 ：

Dear [Name],

I am writing to express my sincere gratitude for the project collaboration. Your expertise [solved critical issues] and your dedication [improved project efficiency]. I hope we can continue our partnership in the future. Thank you once again!

通过以上模板和建议，可灵活调整内容以适应不同场景，提升感谢信的真诚度和感染力。