Dear Mike

Dear Mike,
         How are you?I am your best friend,LiKe.I am writing to invite you to take part in English activity.It will take place at our school ,and it will begin at 14:00 on Sunday.You can make friends on English activity,and it will enrich your social life.In addition,you can spend more time with your some teachers and friends.What's more,it can help you realize your-slfe worth and teach you some new English words.So I hope you can come to join us.
        As a result,I am looking forward to your early reply.I wish you and your family good health and happiness.                                                                                                                                                                                                                                                                                   

                                                                                                                               Yours sincerly  ,                                                                                                                                                                      
                                                                                                                                      LiKe

Dear LiKe,

Thank you for submitting your letter. Based on the scoring criteria, I will evaluate your writing:

**Content and Structure:**  
Your letter successfully conveys the main purpose, which is to invite Mike to participate in an English activity at your school. You also provide reasons for attending, such as making friends, enriching social life, and learning new English words. However, the letter could be improved by providing more details about the activity (e.g., what specific activities will take place, how long it will last, or any special guests). This would make your invitation more compelling.

**Language Use:**  
- **Grammar and Syntax:** There are a few minor grammatical errors that need correction:
  - "I am writing to invite you to take part in *an* English activity."
  - "You can make friends *at* the English activity, and it will enrich your social life."
  - "In addition, you can spend more time with *some of your* teachers and friends."
  - "What's more, it can help you realize your *self-worth*..."
- **Vocabulary:** The vocabulary used is appropriate, but you could consider varying your word choice slightly to make it more engaging.
- **Punctuation:** Ensure there is a space after each comma and period for better readability.
- **Spelling:** Be consistent with British or American English spelling. For example, "sincerely" rather than "sincerly."

Overall, the letter is clear and to the point, but it could benefit from some additional detail and refinement. Based on these observations, I would place this letter in the **second tier** with a score of approximately **20-22 points**. With some adjustments, especially in terms of grammatical accuracy and detail, it could reach a higher tier.