Write a lot, speak a lot, listen to English music, watch tv series and movies with English subtitles. Use flashcards to memorize vocabulary. Visit BBC website, because they have some really good learning resources, i.e. articles with exercises, podcasts with answers. Read books in English to learn words from the context. Try to always say aloud what you've written, to get more fluent in speaking. Find language partners to practice with. The more you practice, the better you will get. Everyone has to find their own method ;)

practice more

i have no friend talk in English、、

You should learn the basics and stuffs, after that.. Converse with people more. It would help alot especially if you will talk with some american friends online :) its a long process but it would help you alot.

i try that many times!!!!but its no use for me