@article{oai:ksu.repo.nii.ac.jp:00001415, author = {池田, 崇亘 and IKEDA, Takanobu}, journal = {京都産業大学論集. 人文科学系列}, month = {Mar}, note = {This article aims to survey the state of Third Language Acquisition (TLA). This Acquisition had been considered as same as the Second Language Acquisition (SLA), although there are more factors for TLA as SLA. Because of a variety of factors nfluencing on TLA it is difficult to view this phenomenon as one study.  In this article I try to describe this phenomenon with making use of rolls of native language (L1) and the learned language (L2).}, pages = {353--364}, title = {第三言語学習における母国語・第一外国語の役割}, volume = {47}, year = {2014} }