8.3 Alveolar Fricatives /s，z/
基础科学

        Producing /s/1) Raise the front part of the tongue toward the frontpart of the hard palate,but do not touch it;2) Place the sides of the tongue against the upper teeth;3) Be sure there is a narrow groove along the center ofthe tongue. The airstream escape......（本文共 9370 字, 2 张图）     [阅读本文] >>