This question popped up on our
Ask Me Anything About SC thread, and I'm reposting it here in case it helps somebody:
Mizar18
Dear
GMATNinja GMATNinjaTwo
I have another question
Regarding this one:
The cathedrals of the Middle Ages were community centers just as much as they were purely religious edifices; and they were structures that represented a city’s commitment to a public realm, the opposite of being a private one.
(D) as much community centers as purely religious edifices, structures that represented a city’s commitment to a public realm, as opposed to a private one
(CORRECT)(E) as much community centers as they were purely religious edifices, structures representing a city’s commitment to a public realm, opposite of a private one
(INCORRECT)So, the OA is D) and the OE mentions in E) that
" uses opposite of a private one to refer to a public realm, unreasonably suggesting that a public realm cannot coexist with a private realm"So my question is, whats the difference between these two:a public realm, as opposed to a private one
to a public realm, opposite of a private one
I am not able to see any difference between those two
Best
First, a quick note: "official explanations" are not written by the same people who write official questions. Sometimes they are well-written, and sometimes they're not incredibly helpful.
There are a couple of differences between (D) and (E) in the question you've mentioned. First, (E) has a "they" that could refer to "cathedrals" or to "community centers." This kind of pronoun ambiguity isn't always treated as a definite error, but it's a small mark against (E).
Then we've got "structures that represented" in (D), vs "structures representing" in (E). I'm not sure that one of these is better than the other -- both make it clear that we're modifying the word "structures."
Finally, we make it to the difference that you've asked about: "as opposed to" in (D) vs "opposite of" in (E).
"Opposite of" doesn't work here for a few reasons. First, when using "opposite" as a singular noun, you need to include an article. For example, "up is
the opposite of down," or "Justin Beiber is
the opposite of a great musician."
When you omit the article, it almost turns "opposite" into a preposition -- which really doesn't work with the meaning of the sentence. When we say "my house is opposite the village cemetery" we're talking about the
physical locations of two things relative to one another. That obviously wouldn't fit the intended meaning of the sentence in question.
To be honest, it's not worth memorizing this kind of nitpicky, idiomatic rule that is very unlikely to show up on your GMAT. Instead, it's better to think through the logic of the sentence, and eliminate the options that don't clearly express the author's intended meaning.
From a meaning-based perspective, "as opposed to" just works much better here. The author's intention is to provide a contrast concerning the city's commitment -- (D) clearly shows that the city is committed to the public realm and not to the private realm. (E), on the other hand, doesn't provide this clear contrast -- instead, it (ungrammatically) informs us that the public and private realms are opposites of one another, without connecting this statement back to the intended contrast.
Because (D) clearly expresses the author's intended meaning and (E) does not, (D) is the winner.
I hope that helps!