Question

work on 和 work in 的用法及区别。请说详细些，最好有例句。

Answer 1

我自己总结的，hope it can help :)
work on sth 影响…；对…起作用；继续工作；从事于…；设法说服
例1.And his idea was that gravity did work on the water and falling, and that work led to the generation of heat.他的想法是重力对水起了作用，使水翻滚，从而产生了热能。（重力对水做了功）
例2.I have to work on thanksgiving,eventhough I don't want to. 即使我不愿意，感恩节我还是要继续工作。
例3. Does that book work on you?那本书对你有用么？Does that method work on the problem.那个方法能解决这个问题么？
例4. He works on helping the poors to solve basic living problems.他致力于（从事于）帮助穷人解决基本的生存问题。

work in 在…工作；把…编进去。
例1.He works in a big company in the city.他在市里的一个大公司里上班。
例2.Would you please work my name in the list as well?你能把能吧我的名字也编入到名单里去？

Answer 2

work on 继续工作，不断工作：；把(螺帽等)拧上,旋进[亦作 work into, work onto]：
We work on science experiments.

我们从事科学实验
work in 进入 插进
Some teenagers work in the woods or on the farms near the village.

一些青少年在村子里或附近村庄的农场上劳动；