work on是一个英文词组，意思为从事......
工作，如：The director worked on in the office until ten o'clock last night.。
work on.... 从事......工作
work for... 为.......工作
1. 继续工作，不断工作：
The director worked on in the office until ten o'clock last night.
2. 把(螺帽等)拧上,旋进[亦作 work into, work onto]：
The nut has been worked on the spindle.
3. 致力于，从事于：
The scientists are still working on inventing new methods of reaching outer space.
4. 使人信服，说服[亦作 work upon]：
In order to make him accept our suggestion, I decided to work on him immediately.
5. 对…发生影响，对…起作用[亦作 work upon]：
The doctor told him that this kind of medicine may work on him.
6. 在…上雕刻；在…上绣制：
She worked a dragon on the new linen cloth.