The study examined the actual use of adverbs and the teaching method of teachers with 204 Korean Japanese learners and 13 teachers. According to the study, acquisition of adverbs by majors is stable for each learning stage in proportion to the frequency of exposure. However, as intermediate-level learners tend to use some adverbs mixed with other adverbs, establishing the accurate use of adverbs is required. On the other hand, as adverbs are underused in non-major beginner-level learners, it is necessary to expose students to the basic and frequent adverbs and to lead them to increase frequency of use.
In addition, the confusion of learners is evident when they deal with similar adverbs, so the different use of adverbs and the possibility of substitution should be instructed by grouping similar adverbs. Similar adverbs are particularly difficult part not only for beginners but also middle and highlevel learners and teachers. Therefore, along with the educational content on the meaning and usage of adverbs conducted in the current adverb education, the teacher should focus on the differences between actual use and similar adverbs in various sentences presented in an effective teaching method.