知識(shí)貝殼
知識(shí)貝殼
所屬欄目：英語語音
Producing /r/1) Raise the tip of the tongue near to,but nottouching,the back of the upper alveolar ridge;2) Press the sides of the tongue against yourupper back teeth;3) Allow the air stream to pass freely,withoutfriction,over the central part of the tong ......（本文共 4238 字 , 1 張圖） [閱讀本文] >>