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While studying the like vs as use for comparisons i came across an interesting case.
#1 Sentence: Mr X teaches like Mr Y
Now from what i know, like is used only in a like+noun form. But in this sentence, isn't the act of teaching being compared? Or is it the style of teaching. Is the noun the teaching style?
What would be wrong with Mr X teaches as Mr Y does?
What matters is the grammar, not the implied meaning. If the thing being compared is a noun, then you should use "like" (even if the noun is talking about an action.) If it's not a noun, use "as". Both of your sentences are grammatically correct and they mean the same thing.
Quote:
#2 Sentence: Like Mr X, Mr Y teaches.
Is this correct from a GMAT SC standpoint? Is the noun the profession, making the use of like justifiable.
This is correct, and the noun is "Mr. X."
Whether something is a noun is a grammatical rule, not a meaning one. "Mr. X" is a noun, and "Mr. Y does" is a sentence. Therefore, it's correct to say "like Mr. X," but it's incorrect to say "like Mr. Y does" (you have to say "as Mr. Y does" instead.)