nihongo-net.com/genki-grammars/
Reference guide to grammar patterns from the Genki textbook series, organized by lesson with links to explanations of particles, verb forms, adjectives, and sentence structures for learners following the Genki.
GrammarCourses, textbooks and schoolsIn JapaneseParticlesSentence patternsTe-formJLPT N5TextbooksExample sentencesAdjectivesPassive and causative