专升本英语作文写信需要根据具体场景选择合适模板，并注意格式规范。以下是常见信件类型的写作要点和模板示例：

一、常见信件类型及模板

1. 投诉信

   • 结构 ：开头说明问题背景→具体问题描述→要求解决方案→结束语

   • 模板 ：

     To Whom It May Concern,  
     I am writing to complain about [具体问题] which occurred on [时间][地点].  
     The issue is [问题描述] and it has caused me significant inconvenience.  
     I kindly request [解决方案] and look forward to your prompt response.  
     Thank you.  
     Sincerely, [姓名]  
     

2. 感谢信

   • 结构 ：表达感谢→具体事由说明→再次感谢→结束语

   • 模板 ：

     Dear [姓名],  
     I am writing to express my heartfelt gratitude for [具体事由].  
     Your [帮助/支持/礼物] was very much appreciated and made a great difference.  
     Thank you once again!  
     Sincerely, [姓名]  
     

3. 邀请信

   • 结构 ：说明邀请目的→活动安排→期待回应→结束语

   • 模板 ：

     Dear [姓名],  
     I am delighted to invite you to [活动名称] on [时间][地点].  
     The event will cover [活动内容] and I believe it will be a great opportunity for us to [共同目的].  
     Please let me know if you can attend.  
     Looking forward to your reply.  
     Sincerely, [姓名]  
     

4. 求职信

   • 结构 ：自我介绍→求职目的→展示能力→结尾请求

   • 模板 ：

     Dear [招聘负责人姓名],  
     I am writing to apply for the position of [职位名称] advertised on [渠道].  
     With [相关经验/技能] and a strong motivation, I am confident in my ability to contribute effectively.  
     I would appreciate the opportunity to discuss my application in further detail.  
     Thank you.  
     Sincerely, [姓名]  
     

5. 推荐信

   • 结构 ：说明关系→被推荐人介绍→推荐理由→结束语

   • 模板 ：

     Dear [接收方姓名],  
     I am writing to recommend [被推荐人姓名] for [目的].  
     [被推荐人] has demonstrated [具体能力/品质] and I am certain they will excel in [相关领域].  
     Please do not hesitate to contact me if you need further information.  
     Sincerely, [姓名]  
     

二、写作注意事项

1. 格式规范

   • 使用正式信纸，字体清晰（如Times New Roman 12号）；

   • 信件开头顶格写称呼（如Dear Mr. Wang），个人信件可用第二人称（you）；

   • 正文分段清晰，每段表达一个中心思想。

2. 语言表达

   • 保持语句通顺，避免口语化表达（如"I'm very happy"改为"I am delighted"）；

   • 使用关联词（如however, therefore）增强逻辑性；

   • 避免使用"very"、"too"等冗余词汇。

3. 文化差异

   • 商务信件中避免使用"thank you very much"，建议使用"most sincerely"或"with appreciation"；

   • 邀请信需明确回复截止日期（如"Please reply by May 10th"）。

三、练习建议

1. 模仿写作

   • 选择模板中的信件类型，替换内容进行仿写，注意调整语气和格式；

2. 场景拓展