3日連続で残業してる

N4 日 hi day, sun, sunlight N3 連続 renzoku continuity, succession, consecutive

N5 日 nichi, jitsu / hi, -bi, -ka day, sun, Japan N3 連 ren / tsura.naru, tsura.neru, tsu.reru, -zu.re take along, lead, join N3 続 zoku, shoku, kou, kyou / tsuzu.ku, tsuzu.keru, tsugu.nai continue, series, sequel N3 残 zan, san / noko.ru, noko.su, sokona.u, noko.ri remainder, leftover, balance N4 業 gyou, gou / waza business, vocation, arts

N5 〜ている te iru Indicates ongoing action, continuous state, repeated habit, or resulting condition depending on context N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context