My father is working这个句子的意思是，我的父亲正在工作。 Work同义词有job ，task ，operation occupation ，profession等。那么这个句子，还可以有其他的表达。 My father is doing his job.
My father is finishing his task.
My father is performing his task. My father is busy with his occupation.
这些句子都是可以表达父亲在忙着工作。
