本研究采用个案研究的方法,研究一位祖籍为北京,在广州十年以上的“新广州人”广州话发音的声调特点;以此探究人口流动对方言语音可能造成的影响。另外,本研究还尝试从四呼与音节长度的角度对发音人平调字变读严重这一现象作出解释。 This study uses a case study approach to study the tonal characteristics of a Cantonese dialect of “New Guangzhou” originating in Beijing and having been in Guangzhou for more than a decade; and to explore the possible impact of population movements on dialectal speech. In addition, this study also attempts to explain the phenomenon that the speaker’s tone of speech is seriously changed from the perspective of the length of four tones and the length of syllables.