我的建议是：为自己找一个几乎24小时都必须使用英语来会话、书写、甚至自言自语的环境。尤其是自言自语，看起来很幼稚，其实是扩张语言环境的好办法。若怕人家笑，不妨拿着手机掩饰。
Perhaps you could try to convey your thought in plain English, perhaps in the form of diary, monologue, or other form of composition. Another suggestion would be watching English movies. Try to memorize as much vocabulary as possible, guess the syllable structure of the words which you heard frequently yet could not figure out the right spelling.
Bon voyage :)