| The thesis mainly analyze the rules and characteristics of that when the vocabulary "Yinggai(应该)" and "Shuo(说)" are used together in Modern Chinese. The thesis includes six parts, then we introduce the content of every part.The first chapter is the preface of the paper. Firstly we introduce the research scope of the thesis:"Yinggai(应该)"、"Shuo(说)"、"Yinggai Shuo(应该说)"; And then according to much material, we introduce the previous research, research meaning, research methods of the thesis; Lastly we also introduce the source of language material of the paper.The second chapter preliminary study the combination phenomenon of "Yinggai(应 该)" and "Shuo(说)". Firstly, we divided "Yinggai(应该)" into two categories: "YinggaiA(应该A)" and "YinggaiB(应该B)", we defined "YinggaiA(应该A) " as deontic modality, "YinggaiB(应该B)" as epistemic modality, and we also analyze their differences and similarities based on previous research and our own opinions. Secondly, we divided "Shuo(说)" into two categories:"ShuoA(说A)" and "ShuoB(说B)", then we study their features respectively. The purpose we analyze "Yinggai(应该)" and "Shuo(说)" is to study their combination phenomenon. Lastly we simply introduce them.The third chapter of the thesis describe "YinggaiAShuoA(应该A 说A)" by four aspects such as phonetics、grammar、semantics and complex sentence, as "YinggaiAShuoA(应该 A 说A)" is relatively independent structure, it has many similarities with "YinggaiA(应该 A)"and "ShuoA(说A)".The fourth part mainly study "YinggaiA ShuoB (应该A 说B)".First of all, we describe it from the following aspects such as phonetics、grammar、semantics、pragmatics、complex sentence and the fuction of text.then, we compare "YinggaiB(应该B)" and "YinggaiA ShuoB (应该A 应该B)" as they have many similarities in meanings.The fifth part, we discuss whether "Yinggai Shuo (应该说)" are at the same level, including "YinggaiAShuo(应该A 说)" and "YinggaiBShuo(应该B 说)".The sixth part is the conclusion of the paper. We summarize the main points of the thesis, so that it may help the people who will discuss the similarity topic in the future. |