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Papgust's GMAT SENTENCE CORRECTION FLASHCARDS directory

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sat Jun 19, 2010 8:09 pm

"Estimate .. ":

"Estimate NJ deer population to have grown" is UNIDIOMATIC.

In general,
"Estimate X to have VERB'ed" is WRONG.
"Estimate that X has VERB'ed" is RIGHT.

Courtesy: Ron Purewal, GMAT Expert.

Download GMAT Math and CR questions with Solutions from Instructors and High-scorers:
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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sat Jun 19, 2010 8:11 pm

"Rather than" Vs "Instead of":

"Rather than" is preferable to use for VERBS.

"Instead of" is preferable to use for NOUNS.

Courtesy: Ron Purewal, GMAT Expert.

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sat Jun 19, 2010 8:12 pm

In general, "FISH" is PLURAL.

If "Fish" is attached with articles such as "a" or "the", then it is SINGULAR.

Courtesy: Ron Purewal, GMAT Expert.

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sumanr84: Legendary Member; Posts: 758; Joined: Sat Aug 29, 2009 9:32 pmFollowed by: 2 members; Location: Bangalore,India; Thanked: 67 times

by sumanr84 » Sun Jun 20, 2010 7:15 am

papgust wrote:"Twice":

"Twice" CANNOT function as an object of the preposition such as "by".

"Twice" is an adverb.

Example:
"... increased by more than twice .." -- WRONG!

Courtesy: Ron Purewal, GMAT Expert.

On a similar note, "DOUBLE" is an adjective and cannot modify verb, but since "Twice" is an adverb it can modify Verb.
Example:-
The same amount of acreage produces double the apple.... -- WRONG
The same amount of acreage produces twice as many apples..... --CORRECT

I am on a break !!

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sun Jun 20, 2010 7:29 am

Good point suman. Thanks for sharing it!

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:19 pm

"X was more concentrated than Y"

When Y uses a past tense, "was" (a past tense) must be used by X. MAINTAIN PARALLELISM b/w X and Y including TENSES.

--> [Refer OG11, Qn. # 2] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:20 pm

"Maybe" and "Perhaps" are INTERCHANGEABLE.

"Perhaps" is slightly more formal.

--> [Refer OG11, Qn. # 2] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:21 pm

"double what it was in 1977".

"what it was" is awkward, wordy and unclear according to GMAT standards.

--> [Refer OG11, Qn. # 4] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:24 pm

AVOID DUPLICATION:

"... in the past would have conceded previously to rivals".

"Previously" repeats the idea of "in the past". WRONG!!

--> [Refer OG11, Qn. # 5] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:25 pm

"Although" typically introduce a subordinate clause that has a SUBJECT and a VERB.

--> [Refer OG11, Qn. # 9] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Fri Jun 25, 2010 7:28 pm

"In Japan, unlike the United States ... "

"In Japan" MUST be balanced by "in the United States" to maintain parallelism.

BUT, the preposition "in" CANNOT follow the preposition "Unlike". Therefore, this construction is ALSO awkward and imprecise.

--> [Refer OG11, Qn. # 10] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sun Jun 27, 2010 6:28 pm

"Contrast":

Correct idioms for contrasts:

* In contrast to X, Y
* In contrast with X, Y
* Unlike X, Y

-- X and Y must be grammatically and logically parallel.

Incorrect Idiom:

* As contrasted with X, Y

--> [Refer OG11, Qn. # 16] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sun Jun 27, 2010 6:30 pm

"are in danger" is ALWAYS followed by "of".

Incorrect Idioms:

* "are in danger to"
* "have a danger"

--> [Refer OG11, Qn. # 27] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sun Jun 27, 2010 6:31 pm

"seem to indicate that .." is a PROPER idiom.
"seem as if ... " is correct in SOME contexts.

--> [Refer OG11, Qn. # 29] <--

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papgust: Community Manager; Posts: 1537; Joined: Mon Aug 10, 2009 6:10 pmFollowed by: 252 members; Thanked: 653 times

by papgust » Sun Jun 27, 2010 6:34 pm

"X as much as Y" is a PROPER idiom.

"Not so much as" is another PROPER idiom used ONLY in the negative contexts.
E.g:
"Not so much as a whisper was heard from the crowd"

Incorrect Idioms:
* "So much/many as"
* "As much/many that"
* "So much/many that"

--> [Refer OG11, Qn. # 30] <--

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