- 2019 - 2023 英語モダリティの派生、解釈、そして習得に関する統合的アプローチ
- 2017 - 2023 Development of Material for English Tense, Aspect and Adverb --- A Hybrid Methodology for Autonomous Learning ---
- 2015 - 2018 A Study from Multiple Approaches of the Generation and Acquisition of Passives
- 2014 - 2017 An Empirical Study on English Tense and Aspect --- Reconstruction of Verb Concepts and Their Schema and Development of Audiovisual Teaching Material---
- 2011 - 2015 A Comparative Study on the Production and Acquisition of English and Japanese Rhetorical Questions
- 2011 - 2013 Re-Classification of English Phrasal Verbs and Development of Audio-Visual Teaching Materials
- 2008 - 2010 Acquisition and Learning Processes of Negative Polarity Items and Quantifiers
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