【摘要】 汉语同位语从句的发生率、分布性质、嵌套方式和嵌套层级至今尚不甚清楚，与关系从句的关系也有待厘清。通过统计、分析汉语自然语言文本中的同位语从句，发现：1）汉语同位语从句嵌套方式包括起始嵌套和中心嵌套两类，且两类嵌套的最大程度均是一层；2）汉语同位语从句受到句尾焦点和句尾重心原则的制约，主要内嵌于上级小句的谓语部分，所属的语法类型是上下文无关语法，这表明汉语是一种拥有普遍的高级语法类型的语言。汉语同位语从句所隐含的一些个性和共性特征得到揭示。最后提出汉语同位语从句中心嵌套层级假设。更多还原

【Abstract】 The incidences, distributional properties, embedding modes and embedding levels of appositive clauses in Chinese are not very clear up to now. Moreover, relationships between appositive clauses and relative clauses remain to be clarified. Through counting and analyzing appositive clauses in Chinese natural language texts, it is found that: 1) the embedding modes of appositive clauses in Chinese consist of initial embedding and center-embedding, with the maximum degree of two kinds of embeddings at one level, and 2) appositive clauses in Chinese are mainly center-embedded in the predicative parts of their superordinate clauses because of restraints by the principle of end-focus and end-weight, and fall into the type of context-free grammar, which suggests that Chinese is a language with a universal high-level grammar type. Some hidden individual and common characteristics of appositive clauses in Chinese are revealed. In the end, a hypothesis about center-embedding levels of appositive clauses in Chinese is put forward.更多还原