Talking to native speaker helps a lot. This site is a big help.

thank you guys u really help me alot :)

Agree with Jia Ni. You can do pretty much on your own, I used to learn Swedish this way and now learning Chinese. You can start writing a diary and you will inevitably have to use daily words and expressions. As for the words you don't know, you can write them in your own language (well, I used to combine English and Swedish and that worked well). Another good way is listening to songs while reading the lyrics. First, that helps you with the pronunciation part. Second, it gives you lots of words of frequent usage :) Having somebody to talk to is probably the only way to improve your speaking skills. It is great if your partner is a native speaker, but it can also be another student learning English. If you two aren't lazy, you will be making progress for sure! :)

if u have no partner to practice,u can give yourself one topic every and u talk it by yourself.or you can watch english movies to pay attention to some useful words and expressions.i am sure u can improve your conversation and vocabulary

thank u guys i hope i can talki with native english in this website :)