在英语学习过程中，书写信件是一项非常实用的技能。无论是正式的商务信函还是非正式的私人信件，掌握正确的格式和语言表达都非常重要。下面是10篇不同主题的英文书信及其对应的中文翻译，每篇大约60词左右。
1. 邀请信 Invitation Letter
Dear John,
I would like to invite you to join us for dinner this Friday at my place. We are planning to have a small party with some friends. Hope you can make it!
亲爱的约翰，
我想邀请你周五来我家共进晚餐。我们计划与一些朋友举办一个小聚会。希望你能来！
2. 感谢信 Thank You Letter
Dear Mrs. Smith,
Thank you so much for your help with my project last week. Your advice was really helpful and I couldn’t have done it without you.
亲爱的史密斯夫人，
非常感谢您上周对我的项目的帮助。您的建议真的很有帮助，没有您我无法完成它。
3. 道歉信 Apology Letter
Dear Sarah,
I am very sorry about the mistake I made yesterday. It was not intentional and I hope you can forgive me.
亲爱的莎拉，
对于昨天我犯下的错误我深感抱歉。这不是故意的，希望你能原谅我。
4. 投诉信 Complaint Letter
To whom it may concern,
I am writing to express my dissatisfaction with the service I received at your restaurant last night. The food was cold and the waiter was rude.
致相关人士，
我写信是为了表达我对昨晚在贵餐厅接受的服务不满。食物凉了，服务员态度粗鲁。
5. 求职信 Cover Letter
Dear Hiring Manager,
I am writing to apply for the position of Marketing Assistant advertised on your website. I believe my skills and experience make me a perfect fit for this role.
尊敬的招聘经理，
我写信申请贵网站上发布的营销助理职位。我相信我的技能和经验使我非常适合这个角色。
6. 友情信 Friendly Letter
Hi Lucy,
Just want to say hi and let you know that I miss you a lot. Let’s catch up soon!
嗨露西，
只是想打个招呼并告诉你我很想念你。我们很快见面吧！
7. 请求信 Request Letter
Dear Mr. Johnson,
I am writing to request a recommendation letter from you for my university application. I would be extremely grateful if you could help me out.
亲爱的约翰逊先生，
我写信是想请您为我写一封推荐信用于我的大学申请。如果您能帮我这个忙我将非常感激。
8. 辞职信 Resignation Letter
Dear Ms. Brown,
Please accept this letter as formal notice of my resignation from the company, effective immediately. Thank you for everything.
亲爱的布朗女士，
请接受这封信作为我从公司正式离职的通知，立即生效。感谢您所做的一切。
9. 祝贺信 Congratulation Letter
Dear David,
Congratulations on your recent promotion! I knew you would achieve great things with hard work and dedication. Well done!
亲爱的大卫，
祝贺你最近升职！我知道你凭借努力和奉献一定会取得巨大成就。干得好！
10. 询问信 Inquiry Letter
Dear Prof. Lee,
I am writing to inquire about any upcoming opportunities for internships in your department. Could you please provide more information or direct me where I should apply?
亲爱的李教授，
我写信是想询问贵系是否有任何即将到来的实习机会。您能否提供更多信息或指引我应该去哪里申请？