知识贝壳
知识贝壳
所属栏目：英语语音
The breath in articulation may be of various degrees of strength. It may be very strong,less strong,weak,very weak,etc. For phonetic purposes,however,it is sufficient to distinguish three principal degrees:1) Primary Stress - the strongest degree of stres ......（本文共 1047 字 ） [阅读本文] >>