A Study on Selected Function Words and Phrases that support the Logical Structure of Text and the Application of this Study to Teaching Japanese as a Foreign Language

目前的研究分析了支持一种典型的说明性散文形式的逻辑结构的虚词和短语，在这种情况下是学术论文。本研究旨在揭示不同领域学术论文中常用的虚词和虚词。本研究将为日语教材的开发提供一套更加客观的基础数据，为日语教材的开发提供一套更加客观的基础数据。这七个来源是：(1)《日本物理学会杂志》的论文；(2)《科学与技术》的论文；(3)《日本文学》的论文；(4)《经济学》的论文；(5)教学经济学教科书；(6)现代小说；(7)社论文章。我计算了从每个样本中选出的62个句型(每句话)的出现频率。通过对上述62种句型的单变量分布进行检验，对151个语篇样本进行典型判别分析，发现通过使用12个虚词和词组，不同语篇的分类正确率高达77%。研究结果还显示了(I)重要的虚词和短语，通过它们可以区分文本的体裁；(Ii)在说明文中经常使用的重要句子结构。通过对应用物理、电子工程、信息处理等领域的数据(共100个文本样本)的分析，发现虚词和虚词是区分不同语篇类型的一个重要指标，并与我们的初步结果相吻合，从而支持了我的初步数据。

The current study analyses function words and phrases that support the logical structure of one representative form of expository prose, in this case academic papers. The present study aims to shed light on the function words and phrases that are commonly used in academic papers from different fields. This study is expected to contribute to the improvement of teaching methods for Japanese for specific purposes, as it will enable us to provide a set of more objective basic data for the development of teaching materials.As a step toward achieving this goal, 151 text samples from seven different sources were chosen as data. Those seven sources were : (1)papers from the Journal of the Physical Society of Japan ; (2)papers from Science and Technology ; (3)papers from Japanese Literature ; (4)papers from Economics ; (5)an pedagogical economics textbooks ; (6)modern novels, and (7)editorial articles. I counted the frequency of occurrences (per sentence) of the 62 selected sentence patterns from each sample. I examined the univariate distribution of the above 62 patterns, and then applied the Canonical Discriminant Analysis to the 151 samples.From these results, it was found that the different texts could be classified into their genres correctly at a high discriminant rate (77%) by means of using 12 function words and phrases. The results also showed (i)the important function words and phrases through which the texts could be discriminated into their genres ; and (ii)the significant sentence structures that are commonly used in expository writings. These results revealed that function words and phrases are an important indicator in distinguishing different textual genre.Further analysis of data from applied physics, electrical engineering, information processing (100 text samples in total) also showed a similarity with our initial result, and thus supported the result obtained from my initial data.