例句：
1、The director worked on in the office until ten o'clock last night.
主任昨晚在办公室工作到十点。
2、The nut has been worked on the spindle.
螺帽已经拧在轴心上了。
3、He has been working on a new novel for over a year now.
近一年多来，他一直在写一部新小说。
4、In order to make him accept our suggestion, I decided to work on him immediately.
为了让他接受我们的建议，我决定立刻对他做工作。