Question

he was e4ager to make some extra money, since during these years he could hardly live on his /

a: wage ; b; wages ; 为什么要加s？？？

Answer 1

wage译为工资、收入，可数名词，通常用复数形式，但也可用单数形式
live on one's wages 是一个短语，意思为靠工资吃饭 、靠工资生活
例句：Since almost no education, no grasp useful technologies, so it is hard for him to earn enough to live on wages.由于几乎没有受过教育，没有掌握有用的技术，所以他很难挣到足够维持生活的工资。