本文运用标记论和语法化理论对“不但”类连词的成词理据加以探讨和解释,认为“不但”类连词的成词与该类词内部两个语素的标记性有关。正是这两个有标记语素构成了一个无标记的组配,并且在重新分析和类推机制的作用下形成了一组同义连词。本文还通过对不同语言的调查证明这种“否定+限定”构成的具有连接功能的语类的模式具有跨语言的共性特征。 This paper uses the theory of markup and grammaticalization to discuss and explain the justification of the conjunctions of “not only” and concludes that the formation of conjunctions of “not only” is related to the labeling of two morphemes within the category. It is these two labeled morphemes that make up a unmarked grouping and form a set of synonymous conjunctions under the reanalysis and analogy mechanisms. Through the investigation of different languages, this paper also proves that the patterns of connected classes of “negative + qualified” have the cross-language common features.