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Is it grammaticaly correct to place a comma after and?

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by czarczar » Sat Feb 12, 2011 3:35 am
While they remove carbon dioxide from the air, conserve soil and water, and house thousands of species, forests also supply potentially valuable pharmaceuticals, and, as sources of building material and firewood, that provide employment for millions worldwide.
A. pharmaceuticals, and, as sources of building material and firewood, that provide
B. pharmaceuticals, and sources of building material and firewood, are providers of
C. pharmaceuticals and, as sources of building material and firewood that are provide
D. pharmaceuticals and as sources of building material and firewood, for providing
E. pharmaceuticals and, as sources of building material and firewood, provide
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by aspirant2011 » Sat Feb 12, 2011 4:28 am
Is the answer E?
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by czarczar » Sat Feb 12, 2011 12:56 pm
aspirant2011 wrote:Is the answer E?
Yes it is E.

BTW could you please tell me that is it right to use comma after and?
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by sanabk » Sat Feb 12, 2011 5:19 pm
While they
1) remove carbon dioxide from the air,
2) conserve soil and water,
3) and house thousands of species,
forests also
4) supply potentially valuable pharmaceuticals
and, as sources of building material and firewood, provide employment for millions worldwide.

Here , as sources of building material and firewood, is extra information about forests. Consider as a non-restrictive phrase and remove it to construe the actual sentence.

Follow the verbs "remove, conserve, house, supply, and provide."

Best!!!
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by earnest10 » Sun Feb 13, 2011 12:03 pm
sanabk wrote:While they
1) remove carbon dioxide from the air,
2) conserve soil and water,
3) and house thousands of species,
forests also
4) supply potentially valuable pharmaceuticals
and, as sources of building material and firewood, provide employment for millions worldwide.

Here , as sources of building material and firewood, is extra information about forests. Consider as a non-restrictive phrase and remove it to construe the actual sentence.

Follow the verbs "remove, conserve, house, supply, and provide."

Best!!!

Yes.... E is correct. great explanation Sanabk.
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by Jim@Grockit » Sun Feb 13, 2011 8:16 pm
The comma after "and" is only grammatical when the phrase set off by the pair of commas is parenthetical (I went to the store and, unfortunately, found it was closed) or when the word "and" is being used as a word in a list (Coordinating conjunctions include and, but, and so).
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by tetura84 » Mon Feb 14, 2011 12:16 am
In continuation of the above discussion, I would like to know if this is correct or not.

While they remove carbon dioxide from the air, conserve soil and water, and house thousands of species, forests also supply potentially valuable pharmaceuticals, and sources of building material and firewood.

I think it is wrong, as bold part is not in parallel with remove, conserve, house and supply.

Please clear my doubt.

In general, I am thinking, in GMAT is it correct this kind of parallelism?
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by ansh.kumar » Mon Feb 14, 2011 2:41 am
hi instructor ,
i hav a question about answer choice "A" -IF WE REMOVE A MODIFIER AFTER phamaceuticals(cuz they are set off in commas)
then THAT wud refer to pharmaceuticals , isnt this sentence right?
THANKS
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by lunarpower » Mon Feb 14, 2011 3:42 am
i received a pm.

it seems that this poster has also posted this question on the MGMAT forum (if not, it's a giant coincidence), so here's my response over there:
https://www.manhattangmat.com/forums/pos ... tml#p48741
Ron has been teaching various standardized tests for 20 years.

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by pesfunk » Fri Mar 25, 2011 7:42 pm
The explanation couldn't be better than this...awesome !!
sanabk wrote:While they
1) remove carbon dioxide from the air,
2) conserve soil and water,
3) and house thousands of species,
forests also
4) supply potentially valuable pharmaceuticals
and, as sources of building material and firewood, provide employment for millions worldwide.

Here , as sources of building material and firewood, is extra information about forests. Consider as a non-restrictive phrase and remove it to construe the actual sentence.

Follow the verbs "remove, conserve, house, supply, and provide."

Best!!!
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by tetura84 » Fri Mar 25, 2011 11:47 pm
Jim@Grockit wrote:The comma after "and" is only grammatical when the phrase set off by the pair of commas is parenthetical (I went to the store and, unfortunately, found it was closed) or when the word "and" is being used as a word in a list (Coordinating conjunctions include and, but, and so).
Jim, i think in case of lists, we don't put COMMA AFTER AND.
Rather the pattern is,

X AND Y
OR
X, Y, AND Z
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