彼女は二重国籍であることがわかって大問題になった

N5 彼女 kanojo she N5 二 ni two, number two N3 国籍 kokuseki nationality, citizenship N3 大 dai big, large, great N5 問題 mondai problem, question

N3 彼 hi / kare, kano, ka.no he, that, the N5 女 jo, nyo, nyou / onna, me woman, female, femme N5 二 ni, ji / futa, futa.tsu, futatabi two, two radical (no. 7), deux N4 重 juu, chou / e, omo.i, omo.ri, omo.nau, kasa.neru, kasa.naru, omo heavy, important, esteem N5 国 koku / kuni country, pays, país N2 籍 seki enroll, domiciliary register, membership N5 大 dai, tai / oo-, oo.kii, -oo.ini large, big, grand N4 問 mon / to.u, to.i, ton question, ask, problem N4 題 dai topic, subject, sujet

N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information