| "Jiexialai"and"jiexiaqu"are two fixed constructions and used frequently in modern Chinese. On the one hand, they are not words yet but Verb-complement constructions, on the other hand, they are grammarticalizing and have the function of discourse conjunction already. And,"jiexialai"even has the function of discourse marker.There are 6 chapters in all. Chapter 1 introduced two objects of study and retrospected prevenient studies. Chapter 2 and 3 descripted"jiexialai"and"jiexiaqu"from angles of syntax, semanteme and discourse. Firstly,"jiexialai"and"jiexiaqu"could be divided into 2 kinds from characteristics of syntax: Solid ones and empty ones. Empty ones also could be divided into 3 kinds from angles of syntax and discourse function. Then, we studied them respectively in 3 factors: syntax characteristics, semanteme characteristics, match with noun and discourse function. Chapter 4 compared"jiexialai"and"jiexiaqu"and found same points and differences in four aspects we just mentioned as well as the using frequency difference between"jiexialai"and"jiexiaqu". We found reasons in two factors: Factor of semantics and social factor-mass media. Chapter 5 did diachronic studies on"jiexialai"and"jiexiaqu"."Jiexialai"is evolving faster, and because of their similarity, we only do grammarticalization study on"jiexialai". Chapter 6 discussed route, motivation and mechanism of grammarticalization of"jiexialai". As we analyzed in this chapter, we reckon that: The grammarticalization of"jiexialai"is cognitively motivated by the mechanism of figure salience. Semantic factor, analogy, metonymic and reanalysis mechanisms play very important roles together.In terms of synchronic,"jiexialai"and"jiexiaqu"have both same points and differences,"Jiexialai"is used more frequently, and is a typical discourse marker. In terms of diachronic,"Jiexialai"grammarticalizes with the decreasing of concrete meaning and objectivity ,and with the increasing of abstract meaning and subjectivity. At the beginning, combination of"jie"and"xialai"is part of the formation of Verb-complement constructions of Chinese. Then, it produced spatial sequence meaning and time sequence meaning. Finally, it became a discourse marker. |