Hello sir,
I want to ask you one question.
1) He did that work before they doing it.
2) He did that work before them doing it
What is the difference between the two sentences above?
Those are wrong. He did that work before they did. You have two different subjects: He and they .
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Those are wrong.
He did that work before they did.
You have two different subjects: He and they.
Because of that, you can't use the -ing form after before.
You can use -ing when the subjects are the same, but if you do it that way, then you don't repeat the subject.
The meaning is the same either way:
He