1. I'm writing to inform you of some relevant details.（我写信来告诉你一些相关细节。）
2. I'm writing to invite you to visit a Chinese paper - cutting exhibition.（我写信邀请您参观中国剪纸展览会。）
3. I'm writing to tell you something about my life and study in recent days.（我写信是想告诉你我最近几天的生活和学习情况。）
4. I'm writing to apply to join in the activity you are organizing.（我写信是想申请参加你们组织的活动。）
5. I'm writing to apologize for breaking my promise.（我写信来是为了我的食言而道歉。）
6. I'm writing to ask you to write a piece of paper on fire safety.（我写信是想请你写一篇关于消防安全的文章。）
7. I'm writing to seek your assistance regarding a matter that has been causing me great concern.（我写信是想就一件让我非常担忧的事情寻求你的帮助。）
8. I'm writing to thank you for your great help.（我写信是为了感谢你的大力帮助。）
9. I'm writing to tell you my plan for the coming Chinese lesson.（我写信是想告诉你关于我下次上中文课的计划。）
10. I'm writing to tell you that I am going to take part in the Dragon Boat Training Camp this summer.（我写信是想告诉你今年夏天我要参加龙舟训练营。）

11. I'm writing to invite you to take part in an outing.（我写信邀请你参加郊游。）
12. I'm writing to convey my concern about the recent changes to the project schedule.（我写信是为了表达我对最近项目时间表变化的关切。）
13. I'm writing to inform you that the meeting scheduled for next week has been postponed.（我写信是为了通知您原定于下周的会议已被推迟。）
14. I'm writing to share some advice with you.（我写信是想和你分享一些建议。）
15. I'm writing to express my views on this issue.（我写信是想表达我对这个问题的看法。）
16. I'm writing to apply for the position of volunteer at the school library.（我写信申请学校图书馆志愿者的职位。）
17. I'm writing to you in the hope of filling in the job vacancy.（我写信给您是希望能够填补这个职位空缺。）
18. Learning from the advertisement you have posted, I'm writing for a chance to work as a part - time reporter.（从你发布的广告中得知，我写信是为了争取一个做兼职记者的机会。）
19. I'm writing to you on the purpose of introducing our new product.（我写信给你是为了介绍我们的新产品。）
20. I'm writing to express my views concerning the school uniform policy.（我写信是为了表达我对校服政策的看法。）

21. I have been troubled by the problem that I can't concentrate on study for a long time, so I'm writing to you hoping you can do me a favor.（长期以来我一直被无法集中精力学习的问题困扰，所以我写信希望你能帮我个忙。）
22. What worries me most is that I can't deal with the pressure of study, so I'm writing the letter to ask for your help.（最让我困扰的是我无法应对学习压力，所以我写信向你寻求帮助。）
23. I'm writing to you to ask whether you could do me a favor.（我写信是想问你能否帮我个忙。）
24. I have some difficulty in doing group work, which bothers me a lot. So I have no choice but to turn to you for help.（我在小组合作方面有困难，这很困扰我，所以我别无选择只能向您求助。）
25. I wonder how to deal with the problem that I'm always late for class, so I'm eager to get your timely help.（我想知道如何处理我总是上课迟到的问题，所以我渴望得到你及时的帮助。）
26. I'm writing to apologize to you for not being able to attend the meeting as appointed.（我写信是为了就未能按约定参加会议向你道歉。）