And all the American students of three levels were progressively more accurate when matching the third or the fourth tone than matching the first or the second tone.
而搭配声调则对初、中、高三个水平的美国学生第三声声调变异均产生影响，当搭配第三声或第四声时，学生将第三声发正确的比例大于搭配第一声或第二声的组合。
The fourth chapter analyses the difference of Hunan mandarin in terms of initial, final, tone.
第四章从声母、韵母、声调三方面分析湖南省西南官话语音的差异。
The fourth chapter: Bangbing-Bulang has altogether four kinds of single tones, which including 55 Indiscriminately allocates, 51high falling tone, 13low rising tones high and 31 the low falling tone.
总计辅音音位45 个。第四章：帮丙布朗语单字调共四种调，高平调55、高降调51、低升调13和低降调31。
The fourth chapter: Bangbing-Bulang has altogether four kinds of single tones, which including 55 Indiscriminately allocates, 51high falling tone, 13low rising tones high and 31 the low falling tone.
总计辅音音位45 个。第四章：帮丙布朗语单字调共四种调，高平调55、高降调51、低升调13和低降调31。
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