by esledge Sat Jul 12, 2008 3:34 pm
The earlier comment by Guest was close, but not completely right. There are actually two subject-verb pairs in this sentence:
1) You knew perfectly well that (something)...
2) ...it was I.
On #2, the predicate pronoun thing shows up. Is the subject of the verb "was" the pronoun "it" or "I"? In a way, they both are, because the meaning is that "it" equals "I." I think that is the logic that dictates the use of the subject pronoun "I" rather than "me." However, I must admit I have never seen this particular rule, and would have chosen "me," reasoning that it's placement after the verb made it the object by default.
GMAT take-away: this is probably rather obscure by GMAT standards.
Emily Sledge
Instructor
ManhattanGMAT