彼(かれ) kareは wa夜(よる)遅(おそ)く() yoruosokuまで made私(わたし)た()ち() watashitachiを o働(はたら)か()せ()た() hatarakaseta。 He made us work until late at night. Literal He [topic-は] night late [until-まで] us [object-を] made-work. 私たちを働かせた uses the causative of 働く — 'made us work.' The causative ~させる expresses coercion or permission. 夜遅くまで ('until late at night') marks the duration. worknight~まで (until)causative form (~せる/~させる)
彼(かれ) kareは wa夜(よる)遅(おそ)く() yoruosokuまで made私(わたし)た()ち() watashitachiを o働(はたら)か()せ()た() hatarakaseta。 He made us work until late at night. Literal He [topic-は] night late [until-まで] us [object-を] made-work. 私たちを働かせた uses the causative of 働く — 'made us work.' The causative ~させる expresses coercion or permission. 夜遅くまで ('until late at night') marks the duration. worknight~まで (until)causative form (~せる/~させる)