知識貝殼
知識貝殼
所屬欄目：英語語音
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 張圖） [閱讀本文] >>