1. Japanese grammar101:This series of videos is made by NHK, a Japanese educational TV station, and is suitable for beginners. It introduces the basic Japanese grammar rules and usage in an easy-to-understand way.

2. "Japanese Grammar Rushsource": This series of videos is made by Japanese language school WaniKani, which is suitable for learners with a certain foundation. It quickly explains various commonly used Japanese grammatical structures and usages through illustrations.

3. Japanese Grammar Comprehensive: This series of videos is made by Japanese language school GenkiJapan and is suitable for advanced learners. It introduces all kinds of complicated Japanese grammar rules and usage in detail, and provides a large number of example sentences and exercises.

4. "Japanese Grammar Analysis": This series of videos is produced by Japanese language school JLPTN 1Tutor, which is suitable for learners preparing for Japanese proficiency test N 1. By analyzing real questions, it helps learners to understand and master various complicated Japanese grammatical structures.

5. JapaneseGrammarinAction: This series of videos is made by the Japanese language school Tofugu, which is suitable for learners who want to improve their practical application ability. It allows learners to use their knowledge of Japanese grammar in real scenes through actual dialogues and scenario simulations.