彼(かの)女(じょ) kanojoは wa非(ひ)常(じょう)に() hijouni喜(よろこ)ん()だ() yorokondaので node踊(おど)り()だ()し()た() odoridashita。 She was so happy that she started dancing. Literal She [topic-は] extremely was-happy [so-ので] started-dancing. 踊りだした uses ~出す for the sudden onset of dancing, triggered by joy. An expressive compound verb. danceemotions~ので (because)~始める (begin to)
彼(かの)女(じょ) kanojoは wa非(ひ)常(じょう)に() hijouni喜(よろこ)ん()だ() yorokondaので node踊(おど)り()だ()し()た() odoridashita。 She was so happy that she started dancing. Literal She [topic-は] extremely was-happy [so-ので] started-dancing. 踊りだした uses ~出す for the sudden onset of dancing, triggered by joy. An expressive compound verb. danceemotions~ので (because)~始める (begin to)