Unit 4 Central Vowels: /&652;/， /з:/， /&601;/
基础科学

Unit 4 Central Vowels: /&652;/， /з:/， /&601;/图片（共3张） :

        IntroductionThere are three central vowels in English: /&652;/, /з:/, /&601;/. In forming the centralvowels,the middle of the tongue is raised toward the dividing line between the hardand soft palates. For /з:/ the tongue rises as high as for /e/, but is ......（本文共 11918 字, 3 张图）     [阅读本文] >>