he worked a whole day ,可否变成he worked for a whole day .为什么.

问题描述:

he worked a whole day ,可否变成he worked for a whole day .为什么.

可以,但是意义不同:
he worked a whole day 他一整天都在工作.强调他一整天在干什么
he worked for a whole day 他工作了一整天.强调他干了多少时间