He won't stop until it's finished.

[JACEK1]

Hello everybody!

He won't stop until it's finished =? Not until it's finished, will he stop.

I think the above-mentioned statement is true.

Do you confirm? The sentence was partly made up by me.

Thank you.

[Grumpy]

The two phrases are equivalent, but no native English speaker would ever say "Not until it's finished, will he stop".
Except for Yoda, of Star Wars fame - but then, he probably wasn't a native English speaker....