After you “are finished that”/“are finished with that”/“have finished that”, brush your teeth

Question

I've been hearing constructs of the form, "are __ed that," which sound wrong to me. To my ear, the awkwardness would be dispelled if the word "are" was replaced with "have," or "with" inserted before "that."

Answer 1

It certainly occurs, perhaps more in AmEng than in BrEng. If it sounds awkward, it's because the present and past perfect form is normally found with the auxiliary verb have rather than be. Exceptions are rare.