Dear Tom

Dear Tom,

This is Li Ke from Beijing. The reason that l am writing to you is because we will hold a birthday party for Lucy. Besides of that, here goes another thing that i think is important, which is that the birthday party will be on Sunday at my home. Lastly, I believe you should know this at the very end of my letter, and that is you can tell me if you can come. I appreciate your time for reading my letter and I am looking forward to your reply. I hope everything goes well with your life.

Li Ke

评分：18分（第三档）

内容要点：
- 明确了写信的目的，即邀请Tom参加Lucy的生日派对。
- 提供了派对的时间和地点。
- 请求Tom回复是否能参加。

篇章结构：
文章基本结构清晰，开头和结尾都有常规的问候和祝福语，但整体表达略显冗长，不够简洁。信息传递略显重复，如开头和第二句的信息可以合并以提高连贯性。

语言运用：
- 词汇和语法结构简单，但基本准确。
- 存在一些语言小错误，如“Besides of that”应为“Besides,” 或 “In addition,”。
- 一些表达不够自然或过于复杂，如“Lastly, I believe you should know this at the very end of my letter, and that is you can tell me if you can come.” 可以更直接地表达为“Please let me know if you can come.”

建议：
1. 尝试使句子更简洁明了，以提高信件的流畅性和可读性。
2. 注意一些常见搭配和惯用表达，以提高信件的自然性。
3. 可以增加一些细节，如派对的主题或需要准备的物品，来丰富信件内容。