well, depend on your level of English and when you are going. I came to UK when I was young and understood English as if it was Greek (in other words, I didn't get any of it) but thanks to the environment I learnt English basics in 9 months and went on from there. I suggest do not use the Chinese way of studying (don't just read books and remember vocab) try to enjoy English. You'll come to love it :) Wish you the best.