by StaceyKoprince Fri Oct 24, 2008 7:36 pm
When you have an -ing form participle at the beginning of a modifying phrase, then it modifies the preceding or subsequent clause (depending on the sentence).
So in the sentence about the boy, "giving her the message" modifies the subsequent clause. Think about what's being conveyed. Are we just trying to say "the boy gave her a message"? Or are we trying to say that the act of giving her the message caused something else to happen? It's the latter - the boy felt a weight lift from his shoulders.
In your OG example, the word (based) now has an -ed ending, not an -ing ending. This is now a noun modifier, and the first noun after the comma is scholars. So it basically says the scholars themselves are "based on accounts of various ancient writers." That's not what we want to say; we want to say the scholars used the accounts of various ancient writers to do something else. So we change to an -ing form (using) so that we can correctly modify the clause: scholars have painted X using accounts of Y.
Stacey Koprince
Instructor
Director, Content & Curriculum
ManhattanPrep