一、work out
解决；计算
想出（答案）
制定；拟订（计划等）
work out a seating plan.
拟订好位置安排。
二、work on
director worked on in the office until ten o'clock last night.
nut has been worked on the spindle.
螺帽已经拧在轴心上了。
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。
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。
doctor told him that this kind of medicine may work on him.
医生对他说这种药对他可能有效。
worked a dragon on the new linen cloth.
她在新的亚麻布上绣了条龙。