26 Schweers Jr., C. W. （1999）. Using L1 in the L2 classroom. English Teaching Forum, 37,6-13.
27 Sharma, B. K. （2010）. Mother tongue use in English Classroom. Journal of NELTA, 11,80-87.
28 Song, Y. （2009）. An investigation into L2 teacher beliefs about L1 in China. Prospect Journal, 24, 30–39.
29 Storch, N., & Wigglesworth, G. （2003）. Is there a role for the use of the L1 in an L2 setting？ TESOL Quarterly, 37, 760-770.
30 Toth, P. D., & Moranski, K. （2018）. Why haven’t we solved instructed SLA？ A sociocognitive account. Foreign Language Annals, 51, 73-89.
31 Tudor, I. （1989）. The role of L1 stimulus materials in L2 communicative activities. British journal of language teaching, 27, 41-47.
32 Turnbull, M. （2001）. There is a role for the L1 in second and foreign language teaching,but... The Canadian Modern Language Review, 57, 531-540.
33 Turnbull, M., & Arnett, K. （2002）. Teachers’ uses of the target and first languages in second and foreign language classrooms. Annual Review of Applied Linguistics, 22, 201-218.
34 Turnbull, M., & Dailey-O’ Cain, J. （2009）. First language use in second and foreign language learning. Bristol, England: Multilingual Matters.
35 Van Lier, L. （2004a）. The use of L1 in L2 classes. Babylonia, 2, 37-43.
36 Van Lier, L. （2004b）. The Ecology and Language Learning: A sociocultural perspective.Boston, MA: Kluwer Academic Publishers.
37 Wigglesworth, G. （2005）. Research in use of L1 in adult learning settings. In D. E. Murray, & G. Wigglesworth （Eds.）, First language support in adult ESL in Australia （pp. 2-11 ）. （Teaching in action）. National Centre for English Language Teaching and Research.
38 Wong-Fillmore, L. （1985）. When does teacher talk work as input？ In S. M. Gass & C.G. Madden （Eds.）, Input in Second Language Acquisition, （pp. 17-50 ）. MA: Newbury House Publishers.
39 Yonesaka, S. M. （2005）. A proposal to use classroom discourse frames to investigate patterns of teacher L1 use. Hokkai Gakuen University Studies in Culture, 32, 31-57.
【前回の記事を読む】教室から日本語が聞こえなくなることはない！ 大切なのは英語と日本語のバランス
