知识贝壳
知识贝壳
所属栏目：英语语音
Producing /&643;/1) Raise the soft palate to stop the air escapingthrough the nasal cavity;2) Protrude the lips slightly;3) Place the tip of the tongue near the lower teeth andraise the front part of the tongue toward the hard palate;4) Press the sides of ......（本文共 7003 字 , 2 张图） [阅读本文] >>