彼はしばしば夜遅くまで勉強している

N5 彼 kare he N3 しばしば shibashiba often, frequently, repeatedly N5 夜 yoru night, evening N5 まで made until / to N5 勉強 benkyou study, learning N5 ている te iru be doing

N3 彼 hi / kare, kano, ka.no he, that, the N4 夜 ya / yo, yoru night, evening, nuit N3 遅 chi / oku.reru, oku.rasu, oso.i slow, late, back N4 勉 ben / tsuto.meru exertion, endeavour, encourage N4 強 kyou, gou / tsuyo.i, tsuyo.maru, tsuyo.meru, shi.iru, kowa.i strong, fort, fuerte

N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N5 〜まで made Indicates final limit in time or space, equivalent to until or up to, shows maximum endpoint N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N4 〜ば ba Indicates a hypothetical condition, attaches to verb or adjective, means if it happens then N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information