kanjilibrary.com/grammar/
A structured guide to 253 JLPT grammar patterns from N5 to N1, organized by level and category. Each pattern includes formation rules, example sentences with audio, and common mistakes for learners at all levels.
GrammarJLPT and other testsJLPTSentence patternsParticlesVerb conjugationConditionalsJLPT N5JLPT N4JLPT N3JLPT N2JLPT N1AdjectivesExample sentences