[Grammar] It might have been done.

[rock-onn]

It might have been done.

Is this correct sentence?

A work might have finished by now. That is what I wish to say.

 

[Rover_KE]

It might have been done.

Is this a correct sentence? Yes.

A job might have been finished by now. That is what I wish to say.

`

 

[teechar]

"A work" doesn't work in your sentence.
Perhaps you meant to say,
"The work might have finished by now."

 

[rock-onn]

'A work might have been finished by now' is wrong while 'A job might have been finished by now' is right.

Could anyone tell me the reason?

 

[Matthew Wai]

'Work' is uncountable, while 'job' is countable.

 

[Tdol]

They may have finished the work/job by now would work.