通过设计特定声调组合和语境的实验室语句,考察了韵律短语边界对语句中降阶和焦点后音高骤降的影响规律,以及降阶和焦点的作用域。结果发现,在由两个韵律短语组成的语句中,韵律短语边界会阻断前一短语中的降阶作用,降阶的作用域是韵律短语。焦点的实现与降阶不同:焦点后的正向音高降低作用会跨越韵律短语边界,使得后一韵律短语的高音线明显降低;如果后一韵律短语中有降阶,则焦点的跨边界音高降低作用会与降阶作用累积在一起,产生更低的高音线,说明焦点的作用域是语调短语。但当后一韵律短语也出现焦点时,音高重置阻断了前一短语中焦点的正向音高降低作用,此时两个焦点分别独立地实现。 Through the design of laboratory sentences with specific tone combinations and contexts, the influence of prosodic phrase boundaries on the reduction order of the sentences and the dip of the focus, and the scope of the reduced order and the focus are investigated. As a result, it is found that, in a sentence composed of two prosodic phrases, the prosodic phrase boundary blocks the reduction effect in the preceding phrase, and the reduced scope is the prosodic phrase. The realization of the focal point is different from that of the reduced order: the positive pitch reduction effect after the focus will cross the boundary of the prosodic phrase, so that the high pitch line of the latter prosodic phrase will be significantly reduced; if the latter prosodic phrase has the reduced order, the cross- The effect of high depression will accumulate with the step-down effect, resulting in a lower bass line, indicating that the focal point of focus is the intonation phrase. However, when the latter prosody phrase also appears in focus, the pitch reset blocks the forward pitch reduction effect of the focus in the previous phrase, at which point the two focuses are independently implemented.