1. Watch lots of TV shows and movies with English audio and English subtitles. Pause the show when you don't understand something so you can look it up. This will be difficult at first but as you progress you will master common words and phrases since they get used repeatedly.
2. Practice speaking the language with native speakers. If you don't, your pronunciation will likely be bad. For example, what does "would" sound like? How about "subtle"?
3. Work with a tutor (like me!) :P Working with a tutor that doesn't speak Chinese will help since you will be forced to use your English.