This is a report on the development of teaching materials on Japanese tense and aspect for intermediate and advanced learners and teachers to organize their knowledge. The materials focus on the following topics: 1)the function of TA, 2)grammatical phenomena of TEIRU such as continuation of an action, resultant state, habitual/repeated action, simple state, and lasting effect, 3)the differences between TA and TEITA, 4)TEIRU to express consideration for the listener, aiming at supporting learners to establish smooth interpersonal relationships using Japanese. In addition, by minimizing the use of grammatical terms and effectively utilizing corpora to create examples, we have tried to simplify the activities related to learning and practicing the Japanese language.
