How can I make my student like English？

Recently, I was working as a tutor for a student who is going to take part in the university entrance examination a year later. Her English is just ok, but it is still far away from level that the exam required. She has got enough for the settled grammar rules and other massive things. She just lost the enthusiasm and the patient to learn the language. I often encourage her, but it seems that I just comfort her. And I can feel that she really want to learn it well but don't know how to do. People are different, so the way that I told her seems to make little difference. Who can tell me how can I let her know that she is reaaly good and she can do it? I'm truely want to stimulate her get the fervent to English again !