One of the four language essential skills is pronunciation which has the least attention to investigate. In fact, teaching pronunciation occurs annually in most of the English Departments curriculum. Some previous studies such as whether pronunciation deserves teaching or it can be taught, and the significance of teaching pronunciation for adult learners have put it in a stabilized position in language teaching. Over the earlier 50 years, there were three primary tendencies to pronunciation teaching. These trends are imitating sounds, explicit performance and highly concentrated practice with certain sounds, and empirical tendency.