"养活他的人" 的英文表达是 "the person who takes care of him/her" 或者 "the person who supports him/her financially"。
这个表达的来源是源自英语中常用的表示照顾和资助的词汇，例如 "take care of" 和 "support"。
下面是一些例句：
My parents are the people who take care of me. (我的父母是养活我的人。)
She is the person who supports her family financially. (她是养活家庭的人。)
He is the person who takes care of his elderly grandparents. (他是照顾他的年老祖父母的人。)
希望这些例句能帮到你！