To learn English well in junior high school, you can follow these steps:

1. Consistent practice: Regularly study and use English to build fluency. Practice speaking, listening, reading, and writing daily.

3. Grammar mastery: Understand the basic rules of English grammar. Practice by completing exercises and using reference books when needed.

4. Immersion: Expose yourself to English as much as possible. Watch English movies, listen to English songs, read English books, and communicate with native speakers.

By following these steps, you can improve your English skills and succeed in your studies.