on词性 work

work on 中的on是副词.继续工作 .

判断方法是看结构:动词+(代词或名词)+副词 动词+介词+代词或名词 如 go on go over think over 动词+(代词或名词)+副词. 动词+介词+代词或名词 TOM likes writing with a is looking for his friend.

例句

work on

1、 继续工作，不断工作：

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、 把(螺帽等)拧上，旋进[亦作 work into， work onto]：

The nut has been worked on the spindle.

螺帽已经拧在轴心上了。