标题:627 生徒の現在完了および受身の理解度について(17.教科・教授過程(3),日本教育心理学会第5回総会部門別研究発表要旨・討論の概要) [in Japanese] 627 On students' understanding of "present perfect tense" and "passive voice"(17.Subject matters and teaching processes (3),PROCEEDINGS OF THE FIFTH ANNUAL CONVENTION OF JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY PAPERS AND THE SUMMARIES OF DISCUSSIONS) [in Japanese]