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Expert replies

by tanviet » Mon Dec 14, 2009 12:20 am
check grammar error before check meaning logic.

in A, "by..." and "making..." are both modifiers. 2 modifier never stand side by side because they can not modify each other. they need a noun modified, which is in between.

in B, "so that" must be preceded by a clause not a preposition phrase.

in D, "which" as not logic referent because "makes" is singular.

in E, 'that" refers to "plants" before to " technics".
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by mehravikas » Mon Dec 14, 2009 12:54 pm
Sorry I meant - reason to eliminate D
riteshbindal wrote:
mehravikas wrote:Apologies for opening an old thread !!

I think which can modify the entire clause. That shouldn't be the reason to eliminate C.

Can somebody confirm please?
pradeepsarathy wrote:IMO C -

A and D are out - Modifier problem
Out of C,D,E -
D is out because 'which' modifies the entire clause

Out of C and E - I would go for C - because , "techniques are used to genetically" sounds better
I think you want to say "that shouldn't be the reason to eliminate D".
Anyways, "which" can not modify an entire clause. It is used to modify noun followed by it.
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by Stuart@KaplanGMAT » Mon Dec 14, 2009 1:45 pm
crackgmat007 wrote:By the same techniques used for genetically enhancing plants, making them disease- or
pest-resistant, researchers have been able to increase the amount of protein in potatoes,
sweet potatoes, and tobacco.
A. By the same techniques used for genetically enhancing plants, making them
B. With the same techniques to genetically enhance plants, so that they are
C. Employing the same techniques used to genetically enhance plants so that they are
D. Employing the same techniques to genetically enhance plants, which makes them
E. Employing the same techniques for genetically enhancing plants that make them
D is wrong for a completely different reason - it changes the meaning of the sentence.

According to D, researchers are currently genetically enhancing plants; according to the original sentence, in the past plants have been genetically enhanced and now researchers are using the same techniques to increase the amount of protein in potatoes, sweet potatoes and tobacco.

In fact, D makes no sense at all, since there's no relationship between the first action and the second, whereas in the original it's clear that today's researchers are copying previously used techniques. The addition of the word "used" in C fixes this problem.

"Which", when it appears after a comma, modifies the noun immediately preceding the comma. "Which" can refer to a noun that's part of a noun clause, but modifies the noun itself (as may be true of other modifiers right in the noun clause).
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by mehravikas » Mon Dec 14, 2009 7:03 pm
Hi Stuart,

Can you give an example of a noun clause where which refers to noun clause and still modifies a noun please?

Thanks,
Vikas
Stuart Kovinsky wrote:
"Which", when it appears after a comma, modifies the noun immediately preceding the comma. "Which" can refer to a noun that's part of a noun clause, but modifies the noun itself (as may be true of other modifiers right in the noun clause).
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by Stuart@KaplanGMAT » Mon Dec 14, 2009 7:50 pm
mehravikas wrote:Hi Stuart,

Can you give an example of a noun clause where which refers to noun clause and still modifies a noun please?

Thanks,
Vikas
Stuart Kovinsky wrote:
"Which", when it appears after a comma, modifies the noun immediately preceding the comma. "Which" can refer to a noun that's part of a noun clause, but modifies the noun itself (as may be true of other modifiers right in the noun clause).
I know that Microsoft, which is the biggest software company in the US, is based in Seattle.

The noun clause that acts as the object of "know" is "that Microsoft is based in Seattle", but "which" only modifies "Microsoft".
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