Modern Chinese Comprehension Modal Gas Adverb Research

Modality Adverbs Denoting "comprehend" means "understanding suddenly".This thesis regarding syntax,semantic and pragma as the foundation,studied three Modality Adverbs Denoting "comprehend", Yuanlai, Nanguai, Guaibude.Modality Adverbs Denoting "comprehend" have the flexibility of their syntactic position, which can be distributed in the beginning of the sentence, the midst of the sentence, the end of the sentence, and also can be used separately. Then the Modality Adverbs Denoting "comprehend" are found unbalanced in the distribution of the sentence. Yuanlai can be used in more sentences than Nanguai, Guaibude. The different Modality Adverbs Denoting "comprehend " can be used together, and also can be used with other Modality Adverbs, mood particle.In the aspect of Semantics,we explored the origin meaning of Modality Adverbs, Yuanlai, Nanguai, Guaibude.The same semantic feature of these three words is "understanding". Yuanlai has the semantic features of "awakened, interpretation, factive, unexpected", Nanguai has the semantic features of "disillusioned,the results of the research, confirmed", Guaibude has the semantic features of "understanding, the results of the research, confirmed, euphemism". Finally, the three words can form the semantic adverbs mode.In the aspect of the pragmatic and textual functions, Yuanlai, Nanguai, Guaibude can be used in declarative sentences and exclamatory sentences, should not be used in interrogative sentences and imperative sentences.The common pragmatic function of these three words is "the function of evaluation". Yuanlai,Nanguai have the same pragmatic function of "focus mark"; Yuanlai as a presupposition triggers,has the function of specified preset; Nanguai has the function of stating facts; Guaibude has the tone of discourse markers and expression capabilities. The chapter function of these three Modality Adverbs Denoting "comprehend" is mainly reflected in the cohesion and coherence function function.