Research of acquishion data based on the general theory of language acquisition and a theoretical study of the development of grammatical morphemes.

本研究旨在对日语的习得情况进行调查。坚实的理论背景，以补充已经汇编的收购数据集。具体来说，我收集了正在学习日语的儿童的话语，从理论的角度分析了使役结构、被动结构和施益结构。今年，我继续观察了一名儿童（4-5岁），制作了一个话语数据库。观察特别注意的发展阶段的致使，被动和应用/有益的语素/结构。我还介绍了Tomio Hirose合著的一篇关于日语（成人语法）中轻动词结构的论文，这与本研究中观察到的结构有关。而且，由于这是这项研究的最后一年，我结束了这项研究，并作出了最后报告。

This research is intended to make an investigation of the acquisition of Japanese on the basis of. firm theoretical backgrounds in order to supplement collections of acquisitional data that have already been compiled. More specifically, I collect utterances of a child in the midst of acquiuing Japanese and analyze causative, passive, and applicative/benefactive constructions from a theoretical viewpoint.This year, I continued observing a child (4-5 years old) to make a database of utterances. The observation paid special attention to developmental stages of causative, passive, and applicative/benefactive morphemes/constructions. I also made a presentation of a paper coauthored by Tomio Hirose concerning a light verb construction in Japanese (adult grammar), which is related to the constructions observed in this research. And, since this is the last year of this research, I concluded the study and made a final report.