Dear Wang Hai:
I am very glad to recieve your letter about how to learn English well. In my opinion, you should take the following principles into consideration:
1. Be aware of the importance of learning English.
2. Listen carefully in class and take notes in time.
3. Keep words and phrases in mind.
4. LIsten to the recorders and watch English TV shows frequently. Don't be afraid of making mistakes. Talk with your classmates in English.
5. Ask your English teachers for help once you have any questions.
I hope that my suggestions would be beneficial to your English learning.
Wish you success.
yours
Mr Brown