彼が遅刻した。なぜなら電車が遅れたからだ

N5 彼 kare he N3 遅刻 chikoku lateness, being late N3 なぜなら nazenara because N5 電車 densha train N3 遅れ okure delay, lag

N3 彼 hi / kare, kano, ka.no he, that, the N3 遅 chi / oku.reru, oku.rasu, oso.i slow, late, back N3 刻 koku / kiza.mu, kiza.mi engrave, cut fine, chop N5 電 den electricity, électricité, electricidad N5 車 sha / kuruma car, véhicule, voiture

N4 〜なら nara Indicates a condition based on context or already mentioned topic, means if it is the case of N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options