知識(shí)貝殼
知識(shí)貝殼
所屬欄目：英語語音
Producing /p/1) Press your lips together firmly,to stop the flow of air;2) Hold the air behind the closure;3) Open the lips suddenly so that the air comes outof the mouth with a plosive sound;4) Before the lips are opened,the tongue takes theposition of t ......（本文共 8566 字 , 2 張圖） [閱讀本文] >>