Can you make generalized statements, or rules, concerning the formation of questions about objects of prepositions in English, based on the examples given below? Each example lists a declarative statement and parallel questions.

I am walking with my neighbor.
Who are you walking with?
With whom are you walking?

We often talk about this movie.
What do we often talk about?
About what do we often talk?

The story was based upon a real event.
What was the story based upon?
Upon what was the story based?

He is sitting next to the wall.
What is he sitting next to?
Next to what is he sitting?

I borrowed this tale from the story-teller.
Who did you borrow this tale from?
From whom did you borrow this tale?

His testimony is based upon his personal knowledge of the suspect.
What is his testimony based upon?
Upon what is his testimony based?


updated November 10 2002