一、work out
解決；計算
想出（答案）
制定；擬訂（計劃等）
work out a seating plan.
擬訂好位置安排。
二、work on
1.The director worked on in the office until ten o'clock last night.
主任昨晚在辦公室工作到十點。
2.The nut has been worked on the spindle.
螺帽已經擰在軸心上了。
3.He has been working on a new novel for over a year now.
近一年多來，他一直在寫一部新小說。
4.In order to make him accept our suggestion, I decided to work on him immediately.
為了讓他接受我們的建議，我決定立刻對他做工作。
5.The doctor told him that this kind of medicine may work on him.
醫生對他說這種藥對他可能有效。
6.She worked a dragon on the new linen cloth.
她在新的亞麻布上繡了條龍。