知识贝壳
知识贝壳
所属栏目：英语语音
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 张图） [阅读本文] >>