In the English language, what are the morpho-syntactic features that distinguish lexical verbs and auxiliary verbs? Use the data below
He is on the Board of directors
I have my bags full
He didn't get to the airport in time
Do they do practice games before?
Is he on the board of directors?
Do these pens have ink?
These pens don't have ink
Have the students arrived?
I do not have my bags full
He doesn't do his part without being asked
Are we in the same class?
We haven't received our final grades
Does he do it without being asked?
Did Ava kiss Sam?
Ava didn't kiss Sam
We have received our final grades
What are the morpho-syntactic features of the auxiliary uses of 'have,' 'be' and 'do in the data and how do these features differ in their lexical uses?