work on

work on, work at

这是两个与work有关的词组。
work on: 表示“从事”、“创作”、“进行”，后面接名词、代词或v－ing，强调做具体的事；还可表示“继续工作”、“努力说服”，既可作及物动词短语用，又可作不及物动词短语用。

• miss liu is working on a new book.
  刘老师正在写一部新书。
• we'll work on till midnight
  我们将继续工作到午夜。

work at: 表示“致力于”、“从事于”、“研究”、“学习”，后面接名词、代词或v－ing，强调把时间和精力等用在某一方面的事情上，侧重于说明所从事的工作性质。

• mr.zhang is working at a new invention.
  张先生正从事于一项新的发明。
• he has worked at this subject for many years.
  他研究这门学科已经好多年了。

动词 work on:

1. to exert effort in order to do, make, or perform something
   同义词：work at
2. shape, form, or improve a material
   同义词：work, process

1. He comes to visit his aged parents after work on every Friday.
   每个星期五下班后，他去看望年迈的父母。
2. I go to work on the tube.
   我经常乘地铁去上班。
3. I'd like to take this opportunity to thank everyone for their hard work on the project.
   我愿借此机会感谢每一位为这个项目辛勤工作的人。
4. As many as 500 workers work on the farm.
   在这个农厂干活的工人多达500人。
5. American-born Canadian physiologist noted for his work on the discovery and application of insulin.
   贝斯特，查尔斯·赫伯特1899－1978美裔加拿大生理学家，因其对胰岛素的发现与应用方面的工作而著名
6. Will it work on human beings?
   这对人体有影响吗?
7. In the next several year there can be10 different research group work on the project.
   在今后几年中可能会有十个不同的研究小组从事该项目的工作。
8. His work on the cause of the diseases is of premier importance to the whole world.
   他的病理研究工作对全世界至关重要。