from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A word or construction that takes the place of a verb or verb phrase, such as do in the sentence She likes ice cream and I do, too.
So thank goodness for Dr. Boris Worm, whose latest study puts the old pro-verb right again, at least in part.
˜Being™ (˜Das Sein™) along with the forms am, are, is, is a pro-verb in exactly the same way as ˜this™ is a pronoun.
When there isn't enough Predicator available to release a particle for the pre-Subject position, a form of the pro-verb 'do' is brought into play: (1b) "Does the woman feed those pigeons regularly?"