In many English language classrooms, teaching pronunciation is granted the least attention. When ESL teachers defend the poor pronunciation skills of their students, their arguments could either be described as a cop-out with respect to their inability to teach their students proper pronunciation or they could be regarded as taking a stand against linguistic influence. If we learn a second language in childhood, we learn to speak it fluently and without a "foreign accent"; if we learn in adulthood, it is very unlikely that we will attain a native accent. In this study, the researchers first review misconceptions about pronunciation, factors affecting the learning of pronunciation. Then, the needs of learners and suggestions for teaching pronunciation will be reviewed. Pronunciation has a positive effect on learning a second language and learners can gain the skills they need for effective communication in English.