practicejlpt.com/grammar/n4/
Complete JLPT N4 grammar list: 116 grammar points with meanings, usage notes and 923 example sentences with audio. Free N4 grammar study, no sign-up.
GrammarJLPT and other testsJLPT N4Sentence patternsExample sentencesJLPTFreeConditionalsKeigo and politenessPassive and causativeTranslation