| When people study response and response sentences,they notice that some words often arise in the response position,such as "Shi","Dui","Xing","Hao" and so on.All of these words can express affirmative response,and they are semantically blurred in the dialogue and can express special pragmatic functions."Shi" and "Dui" are frequently occurred in the positions of response,and people consider them as a group of words that can be interchanged in response position.However,There are some situations where "Shi" and "Dui" can not be interchanged,and they differ from each other when they are used in response.For example,different from the combination of modal words and adverbs,the response initiator and the discourse function of expression are also different.We divided the paper into six segments :Part one is the introduction.We introduce the research object and illustrate the significance of our work,and give a cutline of theoretical basis and the research methods adopted,and explains the use of the corpus.Part two and part three quantitatively investigate the occurrence of the words "Shi" and "Dui" in the dialogue,and describe the co-occurrence of "Shi" and "Dui" with modal words,adverbs and pronouns.We talked about the initiators of the "Shi" and "Dui" responses,and generalize them from the perspective of pragmatics,and put across the positive coping function,negative coping function and discourse cohesion function of the "Shi" and "Dui" responses in the context of the initiator and the context.After the basic work of first two parts,we make a comparative analysis of the corresponding response words "Shi" and "Dui",conclude the similarities and differences between them.Also,we try to make clear the reasons that influence the differences between them are the different degree of semantic ambiguity and the different syntactic characteristics.Part six is the peroration of the thesis and the weakness of the research. |