tā / zhǔ / dòng / liú / xià / lái / zhào / gù / lǎo / rén / rèn / wéi / zhè / shì / zì / jǐ / zài / jìn / yì / wù

他主动留下来照顾老人，认为这是自己在尽义务。

He stayed behind voluntarily to care for the elderly, believing that he was fulfilling his duty.