jlptsensei.com/learn-japanese-grammar/%E5%90%88%E3%81%86-%E3%81%82%E3%81%86-au-meaning/
Explains the JLPT N3 grammar pattern 合う (au), which expresses doing something together with others, with nine example sentences, romaji, English translations, and downloadable flashcards for intermediate learners.
GrammarJLPT and other testsJLPT N3Example sentencesSpaced repetitionJLPTTranslation