Listen to English a lot and say after the speaker. It's good to watch American TV series without Chinese subtitle. Your efforts will pay off in the end.

talk to people and don't be afraid to make mistakes. i learned that way and it worked out absolutely fantastic for me. it's not easy to get started. but the result is worth the courage. good luck.

怎么用中文问问题啊！那你的问题只有懂中文的人才能回答哦！口语要多说，多记，还要多听！去模仿一些你感兴趣的故事情节！最好的办法是多交外国朋友啊！哈哈