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文章以言语习得模型和感知同化模型为理论基础,采用实证研究的方法,对以汉语为母语的中国学生产出美式紧元音/i/和松元音/I/作了声学分析,结果表明中国学生对构成美式紧松元音/i/和/I/区别的特征——时长和声谱特征未能正确掌握,声谱特征是构成美式紧松元音的决定因素,时长则是次要因素,而中国学生则主要依靠时长来区分美式紧松元音,所以造成了不能正确产出这组元音。
Taking the language acquisition model and the perception assimilation model as the theoretical foundation, this thesis uses the empirical research method to make an acoustic analysis of Chinese tonal vowels / i / and vowels / I / O produced by native Chinese speakers. The results show that The characteristics of Chinese tight vowels / i / and / I / which are different from Chinese students - the length of time and the characteristics of the sound spectrum are not correctly understood. The characteristics of the sound spectrum are the decisive factors that constitute the American tight loose vowel. The length of time is the secondary factor, Chinese students, however, rely mainly on the duration to distinguish the American tight loose vowels, resulting in the inability to correctly produce the vowels.