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parallelism and idioms

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by Amadalia » Wed Feb 12, 2014 4:01 am
Good day
while I'was reading the idoms chapter in Manhattan sentence correction book, I find out the fellowing idioms about the word difference
Right: There are DIFFERENCES IN what you and I can do.
Wrong: There are DIFFERENCES BETWEEN what you and I can do

I can understand that the last is wrong because "what you" isn't parallel to "I can do"
but why it is correct in the first place?????
Many thanks in advance
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by GMATGuruNY » Wed Feb 12, 2014 7:24 am
Amadalia wrote: Wrong: There are DIFFERENCES BETWEEN what you and I can do
A what-clause is SINGULAR.
Here, what you and I can do is the equivalent of a collective noun:
You can run fast.
I can play the piano.
Together, these actions constitute ONE THING: what you and I can do.
Since between must refer to TWO THINGS, its use in the second sentence is inappropriate.
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by Amadalia » Wed Feb 12, 2014 8:29 am
thanks Guru you nail it!!!!!
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