Scarcella and Oxford (1994) collected 11 techniques for teaching pronunciation. They are as follows: self-monitoring, tutorial sessions and self-study, Modeling and individual correction, communication activities, written versions of oral presentations, computer-assisted language learning, explanations, utilization of known sounds, incorporation of novel elements, communication strategies and affective strategies. Lin, Fan and Chen (1995) showed their strategies to teach pronunciation in four parts: intonation, stress and rhythm, consonants and vowels.