im busy working分析下working

题目

im busy working分析下working
他是什么词,做什么成分
到底是怎么回事？
怎么会是省略in呢？busy形容词直接修饰working动名词吗？

答案

I'm busy working=I'm busy in working. 也就是说,working是动名词,充当宾语.
类似：
I spent two days (in) finishing the work.
I had no trouble (in) finding his house.
本句结构就是这样：忙于做某事的意思
这个busy与后面的词是没有修饰关系的.
I am busy我很忙
I am busy working.我忙于工作.
He is busy writing something.他在忙于写东西.
He is busy with some important things,