Party

Dear Tom
      How are you?I am your best friend.I am writing to invite you to take part in Lucy's birthday party.It will take place at Lucy's home.It will began at 19:00 on sunday.You can make friends on the party.and it will enrich your social life. We will have a great dinner together.After dinner we will sing,dance and play games. The party will last for about three hours,form 7:00 p.m to 10:00 p.m.
      I really hope you can come and join us.Would you like to come?I am looking forward to your early reply.I wish you and your family good health and happiness.

This is a decent attempt at writing an invitation letter, and it successfully communicates the main purpose of the message. Here is the evaluation based on content, structure, and language use:

**Content:**
- The invitation includes essential details about the birthday party such as the occasion (Lucy's birthday party), location (Lucy's home), time (19:00 on Sunday), and activities planned (dinner, singing, dancing, and games).
- It expresses a personal sentiment and extends a warm invitation.

**Structure:**
- The structure of the letter is generally clear, with a greeting, body, and closing.
- However, the letter would benefit from more coherent paragraphs and some transitional phrases to improve flow.

**Language Use:**
- Grammar and vocabulary are mostly used correctly with some noticeable issues:
  - "began" should be corrected to "begin."
  - "on sunday" should be corrected to "on Sunday."
  - "You can make friends on the party" should be "You can make friends at the party."
  - "We will have a great dinner together.After dinner we will sing,dance and play games." would improve with better punctuation: "We will have a great dinner together. After dinner, we will sing, dance, and play games."
  - "form 7:00 p.m to 10:00 p.m." should be corrected to "from 7:00 p.m. to 10:00 p.m."

**Suggestions for Improvement:**
1. Pay attention to verb tenses and capitalization, especially for days of the week.
2. Ensure proper use of prepositions ("at the party" instead of "on the party").
3. Improve sentence structure by using punctuation marks like commas and periods appropriately to enhance readability.
4. Consider dividing the letter into distinct paragraphs (introduction, details of the party, conclusion) for a clearer structure.

**Score:**
Based on these observations, the letter falls into the **third tier (13-18 points)**. The key points are mentioned with minor errors that do not severely impact comprehension. For a higher score, some grammatical adjustments and structural improvements are necessary to meet higher standards.