he is paid by the hour.为什么用the
问题描述：
he is paid by the hour.为什么用the
答
他是按小时计费的
hour,day,week,month,year ...这些时间单位的并列的候选项,要从中指定一个,所以在选中的项目前面加上定冠词the
请及时采纳,多谢!be paid by the hour是固定词组吗？by the hour是固定词组