中文摘要：

依靠三十篇记事讲话的一个语料库，沥青的角色和在句子口音的诗体学的词的持续时间在讲话上下文被学习。起初，沥青被使正常化。然后，根据沥青，范围，句子和诗体学的词被分类进三个等级加强，正常、削弱分别地。在一样的时间，句子口音被分类进二个层次由感性的评估主要、第二等。结果证明在到句子的反对的诗体学的词的相对沥青范围主导地作出贡献判口音。而且，在句子口音的沥青和持续时间的角色被句子和诗体学的词的等级交互地影响。在正常的诗体学的词，当第二等的句子口音主要取决于沥青的变化时，主要句子口音被沥青和持续时间的相互的表演认识到。在加强的诗体学的词，当句子的沥青范围是压缩的更多时，在句子口音的持续时间的角色是更重要的。最后，在沥青和持续时间之间的关联首先被诗体学的词的力量影响，这被发现，并且在削弱的、正常、加强的诗体学的词，在沥青和持续时间之间的关联分别地积极、空、否定。

英文摘要：

Relying on a corpus of thirty narrative discourses, the roles of pitch and duration of prosodic words in sentence accent were studied in discourse context. At first, the pitch was normalized. Then according to the pitch range, the sentence and prosodic word were classified into three ranks of strengthened, normal and weakened respectively. In the same time the sentence accent was classified into two levels of primary and secondary by perceptual evaluation. The results showed that the relative pitch range of prosodic words in opposition to sentence contributed dominantly to sentence accent. Furthermore, the roles of pitch and duration in sentence accent were affected interactively by the rank of sentence and prosodic words. In normal prosodic words, primary sentence accents were realized by the mutual performance of pitch and duration while secondary sentence accents mainly depended on the variation of pitch. In strengthened prosodic words, the role of duration in sentence accent was more significant when the pitch range of the sentence was more compressed. Finally, it was found that the correlation between pitch and duration was influenced primarily by the strength of prosodic words, and in weakened, normal and strengthened prosodic words, the correlations between pitch and duration were positive, null, and negative respectively.