The Study On The Evolution And Replacement Of Disyllabic Prepositions With The Same Meaning Of "Deng Dao"

In modern Chinese,"Deng Dao" is a common disyllabic preposition meaning"waiting until a certain time or a certain condition". However, there are also many otherdisyllabic prepositions with the same semantic as "Deng Dao" in the Chinese languagehistory. This article takes these words as the objects, combining the case study withoverall study, inductive methods with deductive methods for the multidimensional study.Firstly, we take "Bi Ji" and "Dai Dao" as the objects of the case study, makingdetailed descriptions of the diachronic evolution about the two words respectively, thenbriefly analyzing them from the semantics, syntactic functions and pragmatic value."BiJi" developed the function of prepositions from the trans-layered structure whichappeared in the Pre-Qin period, it had been used until the Qing dynasty, in the Yuandynasty it evolved out of the function of conjunctions, the preposition "Bi Ji" could be aprepositional structure afer match with "NP" or "VP/AP",which has pramatic functions ofconnection,assumption and inference.But there are rarely examples of prepostion "Bi Ji"in modern Chinese. The phenomenon that "Dai Dao" used as a morpheme-linking coulddate back to the Six Dynasty.In the Tang Dynasty,due to the change of ingredients that"Dao" connected,"Dai" and "Dao" converted into a word from the trans-layered structureafter reanalysis. Prepostion "Dai Dao" could match with the objects which used astemporal adverbial and conditions adverbial,which has pramatic functions of connectionetc.Based on the case study, we count the diachronic distribution of11inspected "DengDao" disyllabic prepositions to make a statistics, to find these words basically developedfrom a trans-layered structure, and it can match with "NP" or "VP/AP" in the beginningof the sentence.But there are still some differences in the time of its emersion, usage case,using-frequency of disyllabic prepositions. As a result of the development of languageitself, these disyllabic prepositions which has the same meaning of “DengDao” alsoundergo the process of replacement from the old to the new,“DengDao” eventuallybecomes the dominating word in the same semantic-fields.