表示“工作”时，job是可数名词；work是不可数名词。如：[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ WXxf7ocyRAxb-XrFroG]

    When the factory closed, many workers lost their jobs(=were out of work).那家工厂一倒闭，许多工人失业了。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ I[Q9a#+?4+W?;RwFroG]

    Digging in the field is a hard work. 在地里挖土是辛苦的工作。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ W: (%jE/3Io8!FroG]

    There is a lot of work to do. 有许多事情要做。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ rUha0N,akbA^u3aFroG]

    What's your job? (=What work do you do?)你是干什么工作的？[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ u[WCd{]UK(MBt\TFroG]

    注意：homework 和housework也是不可数名词。[文章版权 禁止转载:考试与评价 http://www.trgroup.com.cn/te/ -NPRS4B
"WH@%)^8FroG]