【評論主題】21In English, the past tense marker –ed has three pronunciations, [t], [d] and [əd]. The three forms

【評論內容】

allophone: 同位音位allomorph: 同位語素(都是加了ed ，但是發出來的音都不一樣)

【評論主題】21In English, the past tense marker –ed has three pronunciations, [t], [d] and [əd]. The three forms

【評論內容】

allophone: 同位音位allomorph: 同位語素(都是加了ed ，但是發出來的音都不一樣)