Motivation plays an extremely important role in learning English. However, under the circumstance that English courses are required, some non- English majors lack motivation to learn English. These students usually have poor English as well as low self-confidence in English learning. They need English teachers who can help them enhance their learning motivation. Hence, this study aims to find out in what ways English teachers' behaviors, teaching materials and teaching techniques affect the students' English learning motivation by using questionnaires. The results show that the most effective way is to increase their intrinsic motivation. Finally, some suggestions for increasing the students' motivation will be offered.