课前准备：
预习第二章，结合自己实际情况，标记出比较难理解的地方。
教师导引：结合学生英语口语以及发音学习的经历，让学生试着谈论自己对相关术语的理解。
小贴士：结合自身口语的学习经历中，尝试描述英语元音和辅音的发音特征。
小试牛刀
What the function of IPA?
参考答案：
(1) It enables linguistics to transcribe speech sounds of languages consistently and accurately.
(2) It helps teachers and learners to distinguish the spelling and pronunciation of words.
(3) English textbooks and dictionaries generally make use of IPA in transcribing the variants of languages.
学习目标
1. Know the sound-producing mechanism and the functions of IPA.
2. Understand the definition phonetics.
3. Be able to describe English consonants and vowels.
4. Be able to distinguish Phonetic features and natural classes.
Terms in this chapter:
Phonetics, articulatory phonetics, acoustic phonetics, auditory phonetics, vocal cords, segments, place of articulation, manner of articulation, voicing, monophthongs, diphthongs, natural classes
进入学习任务
