mdy.mry wrote:
In MGmat's SC guide, in Idioms Strategy, there are two exactly similar examples for AS...AS as follows, except for Not As...As and one with Not So ... As:
Right: Cheese is NOT AS great AS people say.
Suspect: Cheese is NOT SO great AS people say.
Why the second choice is suspicious while X and Y are exactly the same in the two sentences.
Thanks
Idioms have their own little rules that we just have to learn and remember. The point here is that if you see the construction X is NOT AS Y AS . . . we should feel comfortable with that construction. If we see X is NOT SO Y AS . . . we should find that less preferable and hope to see the first construction instead. Parallelism is always necessary and important but just having two elements parallel will not make an idiom correct; we have to have the proper form of that idiom as well.