| With the development of pragmatics, language study of discourse markers has become a rapidly developing field. Discourse marker is a kind of common phenomena in spoken language, which usually does not constitute the truth value of the semantic content of discourse. But it mainly provides the clues with discourse expression and comprehension, and contributes to discourse coherence and interpersonal expression. Even if the discourse markers have been removed, the propositional content is not affected, it indicates that the use of discourse markers is not for the syntactic or semantic needs, but for the need of pragmatic aspects. Besides, the success and effect of the verbal communication depends largely on the appropriate use of discourse markers in some degree. Thus, the author mainly studies the pragmatic functions of discourse markers in this thesis.This thesis, based on the relevant domestic research and research abroad and the background of the oral tests in the PETS, discusses the features and definition of discourse markers and summarizes the reasons why discourse markers are used so frequently in the oral communication. Meanwhile, this paper also analyzes the pragmatic functions of discourse markers in the oral task of PETS. Through theoretical analysis and analysis of a lot of examples in PETS, the author discusses the pragmatic functions of discourse markers aiming at teaching students to learn to use discourse markers correctly and frequently, and finally proposes the ways and means to improve students'oral English level in PETS. |
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