Morphophonological Study on the Mechanism of Tone Sandhi and Neutral Tone Appeared in the Sound Corpora of Spoken Chinese

变调和中性调是北京话中常见的两种典型的变调类型。我们以前的研究表明，在形态学层面上，一部分变调和中性调是由词缀的添加所驱动的。本文以基数、序数和可数名词数这三类数字表达为重点，研究词缀的添加与这两种语气变化之间的关系。京剧语料库为我们提供了三类数字表达中哪些词缀导致变调和中性调的数据。此外，我们还利用同一语料库，对近二十年来京剧中呼召用语的变化进行了调查。

Tone sandhi and neutral tone which are two typical types of tone variation occur frequently in the speech of Pekingese. Our previous studies revealed that a part of tone sandhi and neutral tone are motivated by the addition of affix at the level of morphology. This morphophonological study concentrates on the relationship between the addition of affix and these two types of tone variation focusing upon the three categories of number expressions (cardinal number, ordinal number and countable nouns number). The corpora of Pekingese TV dramas provided us with data that what kinds of affix cause tone sandhi and neutral tone about three categories of number expressions.In addition, we conducted a survey into the change of vocative expressions recent twenty years making use of the same corpora of Pekingese TV dramas.