Amazing score on SC

[eenah26614]

My friend and I are currently studying GMAT,

We already finished studying Critical Reasoning, Reading Comprehensions. I may say my performance is always the same as my friend at them (Critical Reasoning, Reading Comprehensions). Actually, I score 10 points more than my friend did at TOEFL iBT : I got 88, he got 83

The amazing thing when we moved on studying SC in OG#13, he surpasses me significantly : He was correct 100% at 100 first questions in OG#13 and while I was around 60% .I will continue to do the rest in OG#13 on this Sunday and he may even add more to the continuous 100 correct answers. More importantly, he could not explain grammatically why he had chose the answer; he just said that he "think it sounds the best" . Even sometime he tried to explain but his explanation turned out to be wrong (but his answer is still correct by somehow)

I just want to post it here to share and to know if there is any science explanation. Moreover, if we can understand this, we may learn some good strategy from him

P/s : We are not native speaker

[RonPurewal]

My friend and I are currently studying GMAT,

We already finished studying Critical Reasoning, Reading Comprehensions. I may say my performance is always the same as my friend at them (Critical Reasoning, Reading Comprehensions). Actually, I score 10 points more than my friend did at TOEFL iBT : I got 88, he got 83

The amazing thing when we moved on studying SC in OG#13, he surpasses me significantly : He was correct 100% at 100 first questions in OG#13 and while I was around 60% .I will continue to do the rest in OG#13 on this Sunday and he may even add more to the continuous 100 correct answers. More importantly, he could not explain grammatically why he had chose the answer; he just said that he "think it sounds the best" . Even sometime he tried to explain but his explanation turned out to be wrong (but his answer is still correct by somehow)

I just want to post it here to share and to know if there is any science explanation. Moreover, if we can understand this, we may learn some good strategy from him

P/s : We are not native speaker

100% of the first one hundred questions would be a truly remarkable (perhaps even suspicious) result.

but, in terms of what you're asking here, the "intuitive" understanding you're describing here is actually what is possessed by everyone with a strong command of any language, whether written or spoken.
i.e., thinking in terms of "rules" is actually a sign that you haven't achieved a full understanding of a language, rather than that you have.

think about the way young children are with their native languages -- it's entirely intuitive.
i.e., a seven- or eight-year-old native english-speaking child can very easily tell when a foreign speaker is speaking improper english. this of course has nothing to do with "rules" (since a seven-year-old doesn't consciously understand grammar rules); it's a pure combination of intuition and experience. that's what truly understanding a language is all about.

in fact, that's what truly understanding anything is all about. if you're an experienced classical-music listener, for instance, you can tell when an orchestra member has made a mistake just by "knowing", rather than by consciously thinking about any objective qualities of the music.

this discussion may make it seem that native english speakers are going to have an unfair edge on this exam, but that's not the case -- because, remember, no one is a "native speaker" of WRITTEN english. regardless of your first language, you're all in essentially the same "learner" situation when it comes to the written version of the language.