I'll hellp you improve your english
First step:
Read all the series of Harry Potter,if it's too hard try to find a english book that suits your level.Reading a book is the best and laziest way to improve your english,gradually you'll have stacks of knowledge on english grammar and the tense.e.g (past tense,present tense,future tense).
Second step:
Daily,you must write a Journal or Diary entry,write about your feelings (emotions),what you did throughout the day and even write about how you feel about other people.
Third step:
Practice speaking english with your friends!=)
After speaking awhile you'll be able to have a fluent understanding of speech.
If you follow all these steps I'm pretty sure you'll be very good at englsih,good luck dude...>=) zhu ni hao yun