邀请信

Dear Tom,
I'm writing to invite you take part in Lucy's birthday party. The party will held in Lucy's home at 7:00 P.M on sunday.
Please tell me whether you come or not. I want to introduce some friends for you, which can enrich your social life. In addition, we will have a great dinner together. After dinner we will sing, dance and play games. I believe you will have a unforgettable moment with us. Last，but not least，the party lasts about three hours from7:00 PM to 10:00 PM.
I'm looking forward to meeting you.I wish you and your family good health and happiness.
Yours,
Li Ke

这篇作文基本上完成了邀请信的任务，但有一些语法和格式上的错误。根据评分标准，我将其评为第三档，得分在13-18分之间。

**优点：**

1. 包含了邀请的基本信息，如时间、地点和活动安排。
2. 语气友好，符合邀请信的风格。

**不足之处：**

1. 一些语法错误：
   - “take part in”前需加“to”，“invite you to take part in”。
   - “The party will held”应改为“The party will be held”。
   - “on sunday”中的“sunday”应大写为“Sunday”。

2. 用词不当或不准确：
   - “I believe you will have a unforgettable moment”中的“a”应为“an”。

3. 格式问题：
   - “from7:00 PM”需要在“from”和“7:00 PM”之间加空格。

**改进建议：**

- 注意常见的介词和冠词用法。
- 将错别字和拼写错误进行检查，以提高语言的准确性。
- 确保时间和日期等细节清晰明了。

经过修改后，文章会更加流畅和准确。