There are three good ways to study English.First, read more. Secondly, write more. Thirdly, memorize as more words as possible. I think you should follow my instructions. If you do this, you will soon learn English much better. It is also a good idea to read English novels or stories, because it is a good way to broaden your knowledge and experiences. You could try to improve your English byself-learning. Forget your teacher for some time, because there may be some problems in his/her teaching way. This will help you to master English sooner or later.