Dear Liu Chang,
I know you have many problems to solve on English. You said you couldn’t pronounce some of the words. I think you can listen to tapes or ask teacher for help. You also said you always made mistakes in grammar. I think the best solution to solve it is taking notes in class. By the way, I heard that you didn’t get much writing practice. It’s easy! You should read English aloud very morning.
I hope you will get good grades.
Yours,
Liu Brown