by RonPurewal Sat Oct 01, 2016 7:08 am
i can actually say, with a fair amount of confidence, that you can safely just ELIMINATE choices that have "NOUN + having been __ed" (WITHOUT a comma).
if you want to just memorize this, you can.
__
here's an explanation, if you want one:
"...that/who [verb]s" implies that [verb]ing is a permanent or fundamental aspect of the noun that's described.
"...[verb]ing", on the other hand, implies that it's temporary and can/will change.
e.g., if i tell you that i have friends who work in finance, i'm implying that finance is their long-term career.
on the other hand, if i tell you that i have friends working in finance, then there is no such implication (e.g., maybe they'll quit tomorrow and become consultants, or form a startup, or retire and move to a tropical island).
...now, think about
people who have graduated from school X ...which actually MAKES SENSE
vs.
people having graduated from school X ...which is NONSENSE
(because "having graduated" can't be temporary -- once someone HAS GRADUATED from somewhere, that's true forever)
for the same reason, "NOUN having VERBed" really won't make sense anywhere.