Unit 5 Back Vowels:/ɑ:/，/&594;/，/&596;:/，/&650;/，/u:/
基礎(chǔ)科學(xué)

Unit 5 Back Vowels:/ɑ:/，/&594;/，/&596;:/，/&650;/，/u:/圖片（共5張） :

        IntroductionIn forming the back vowels the back of the tongue is instrumental in giving thevowels their quality. The varying distance of the back of the tongue from the softpalate results in different back vowels. Going up the series toward /u:/, the mout......（本文共 18081 字, 5 張圖）     [閱讀本文] >>