知识贝壳
知识贝壳
所属栏目：英语语音
Producing /n/1) Place the tip of the tongue against the upper frontteeth ridge;2) Lower the soft palate so that the air can escapethrough the nose cavity;3) Vibrate the vocal folds;4) The lip position will depend upon that of adjacentvowels. For example,s ......（本文共 4006 字 , 1 张图） [阅读本文]>>