Pure stressed AA: Sat, aa
Pure unstressed AA: backtrack, aa
AA, aa, AA, aa.
AA vowel modified by M: exam, aa-uh
AA vowel modified by N: man, aa-uh
AA vowel modified by NG: gang, ay
Example words. Repeat with me:
Chapter, can, act, last, bank, bypass.
有点难度啊
谢谢您提供的音频,请问配套的教材是什么?