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Quote:
quote="go2venkat"]Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.


(A) that flourished at the same time as the civilizations

(B) that had flourished at the same time as had the civilizations

(C) that flourished at the same time those had

(D) flourishing at the same time as those did

(E) flourishing at the same time as those were
VeritasKarishma GMATNinja
I never came across a question where omitting a verb makes the comparison correct.
Please give your inputs on this question and explain OA.
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Quote:
quote="go2venkat"]Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.


(A) that flourished at the same time as the civilizations

(B) that had flourished at the same time as had the civilizations

(C) that flourished at the same time those had

(D) flourishing at the same time as those did

(E) flourishing at the same time as those were
VeritasKarishma GMATNinja
I never came across a question where omitting a verb makes the comparison correct.
Please give your inputs on this question and explain OA.


'A flourished at the same time as B' is valid and fine. It means 'A flourished at the same time as B flourished'.
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Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.


(A) that flourished at the same time as the civilizations
A flourished at the same time as B -> parallel -> Correct

(B) that had flourished at the same time as had the civilizations
Had flourished -> past perfect is incorrect as both flourished at the same time and there is no sequence in past events.

(C) that flourished at the same time those had
Flourished and had flourished -> Not parallel

(D) flourishing at the same time as those did
Flourishing -> Happening right now - Incorrect

(E) flourishing at the same time as those were
Flourishing -> Happening right now - Incorrect
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I am confused b/w A/B. As simple past tense is used once so using 'had' makes it even more clear about civilizations.
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I am confused b/w A/B. As simple past tense is used once so using 'had' makes it even more clear about civilizations.

Hi

A had + past participle, which marks the usage of the past perfect tense, is used when we are referring to two actions occurring in the past. In this scenario, the "had" is used to refer to the earlier of the two actions.

In this sentence, while "flourished" is one action that is happening in the past, it is not occurring prior to any other action. It is happening at the same time as the flourishing of the other civilizations. Therefore we cannot use "had + past participle" structure for "flourish".

The "flourish" verb is omitted in the case of the other civilizations since it has already been used once (ellipsis).

Hope this clarifies.
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Hi,

Is choice C completely wrong or simply the less preferred choice among the answers?
What are the reasons it is wrong/ less preferred choice?
a) Is it because it contains did- If that is the reason, what is wrong about it?
or
b) Is it because the idiom says ' at the same time' instead of ' at the same time as'?
or
c) Is it because 'those' cannot refer to the singular 'civilizaton' and needs to refer to the plural 'civilizations' which is missing in the sentence?
or
d) All the above reasons

Please help me identify for what reasons/combination of reasons, out of the above reasons is it wrong because of? If 'a)' is one of he reasons it is wrong because of pls explain why it is wrong because of that?

mikemcgarry
rajgurinder
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.

(A) that flourished at the same time as the civilizations
(B) that had flourished at the same time as had the civilizations
(C) that flourished at the same time those had
(D) flourishing at the same time as those did
(E) flourishing at the same time as those were

Hi

I am confused at the application of ellipsis over here.
Though I am not able to justify with any grammatical rule, I constantly feel the correct answer should have been:-
that flourished at the same time as DID the civilizations

I perceive this sentence as if the "time" is being compared to "civilization"
Dear rajgurinder,
I'm happy to respond. :-)

This, of course, is SC #89 in the OG13. You may find this blog helpful:
https://magoosh.com/gmat/2013/dropping-c ... -the-gmat/
One of the hardest things about parallelism is what one can legitimately omit in the second branch, and figuring this out from sentence in which the omission has already happened.

Choice (A) gives perfectly correct parallelism. Part of what's confusing about this sentence is that the words "the site" is an appositive phrase, and the whole rest of the sentence modifies this phrase. For clarity, let's talk about the comparison directly, in its own sentence. The long way to say it would be:
The ancient Mohenjo-Daro civilization flourished at the same time that the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates flourished.
That version is perfectly grammatically correct, but because it's long and wordy, it never would be correct on the GMAT. A shorter and perfectly correct way to say this is:
The ancient Mohenjo-Daro civilization flourished at the same time as the the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates flourished
That is, in essence, the same structure as the OA above. Including the word "did" as you suggest would also be correct, only a little longer --- that's perfectly acceptable, but not necessary to make the sentence correct.

Think about it this way. Think about where the word "same" appears. It appears inside a prepositional phrase, "at the same time" ---- this prepositional phrase is an adverbial phrase, that is, a verb-modifier. See:
https://magoosh.com/gmat/2012/gmat-gramm ... d-clauses/
This suggests that the comparison is not between "time" and something else, but rather, that the comparison is between two verbs, both modified in the same way by the modifying phrase. For example:
A did X at the same time that B did Y.
If the two do the same action, it's redundant to say:
A did X at the same time that B did X
and much better to say
A did X at the same time as B.
The predicate, "did X", is the same, so it is dropped, and the comparison, the "same time", refers to the time of those two identical predicates.

Does all this make sense?
Mike :-)
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ag153

Is choice C completely wrong or simply the less preferred choice among the answers?
What are the reasons it is wrong/ less preferred choice?
a) Is it because it contains did- If that is the reason, what is wrong about it?
Hi ag153, choice C does not contain did (C uses had). Which option are you talking about?
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Thanks for pointing out. Here is my question:

Is choice D completely wrong or simply the less preferred choice among the answers?
What are the reasons it is wrong/ less preferred choice?
a) Is it because it contains did- If that is the reason, what is wrong about it?
or
b) Is it because the idiom says ' at the same time' instead of ' at the same time as'?
or
c) Is it because 'those' cannot refer to the singular 'civilizaton' and needs to refer to the plural 'civilizations' which is missing in the sentence?
or
d) All the above reasons
or
e) Or combinations of the above-- please specify which all

Please help me identify for what reasons/combination of reasons, out of the above reasons is it wrong because of? If 'a)' is one of he reasons it is wrong because of pls explain why it is wrong because of that?



EducationAisle
ag153

Is choice C completely wrong or simply the less preferred choice among the answers?
What are the reasons it is wrong/ less preferred choice?
a) Is it because it contains did- If that is the reason, what is wrong about it?
Hi ag153, choice C does not contain did (C uses had). Which option are you talking about?
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AjiteshArun
sir does the usage of those in options C,D & E is correct?
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saby1410
AjiteshArun
sir does the usage of those in options C,D & E is correct?
Hi saby1410,

No. Those is a plural pronoun, but civilization is singular.
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AjiteshArun
sir does the usage of those in options C,D & E is correct?

Hello saby1410,

We hope this finds you well.

To answer your query, the use of "those" in Options C, D, and E is incorrect, as there is no plural noun that "those" can refer to; remember, the noun that a pronoun refers to must actually be present in the sentence.

We hope this helps.
All the best!
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Anshu0012
aren't we comparing
the site of an ancient civilization that flourished at the same time as the site of civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.

I rejected A because I thought the site of an ancient civilization that flourished to the site of civilizations

Where I'm Wrong??

Hello Anshu0012,

We hope this finds you well.

To answer your query, this sentence actually compares the action "flourished", in terms of when it took place, as done by the three civilizations.

We hope this helps.
All the best!
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It is very much clear that the answer should be option A(because of errors in other four options).However, just for the clarity of a concept,
shouldn't the latter part of the sentence MUST be a clause because when "as" is used for comparision, the structure is as + clause ?
(the correct sentence IMO: the ancient civilization flourished at the same time AS the civilizations in the Nile.... Euphrates DID.)
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dhruvpatel1998
It is very much clear that the answer should be option A(because of errors in other four options).However, just for the clarity of a concept,
shouldn't the latter part of the sentence MUST be a clause because when "as" is used for comparision, the structure is as + clause ?
(the correct sentence IMO: the ancient civilization flourished at the same time AS the civilizations in the Nile.... Euphrates DID.)
Very good observation. "flourished" is implied.

For example:

Peter earns as much as Mary.

This is equivalent to:

Peter earns as much as Mary (earns).
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go2venkat
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.


(A) that flourished at the same time as the civilizations

(B) that had flourished at the same time as had the civilizations

(C) that flourished at the same time those had

(D) flourishing at the same time as those did

(E) flourishing at the same time as those were



https://www.nytimes.com/1985/09/24/science/progress-reported-in-struggle-to-save-imperiled-ruins.html

FOR thousands of years, the Indus River has brought the blessing of water for crops and the curse of destructive floods. But today the Indus River poses a new danger to the site of an ancient civilization that flourished at the same time as those in the river valleys of the Tigris and Euphrates and the Nile.

Moisture and salt deposits threaten to erode and destroy the remarkable Mohenjo Daro archeological excavation that has fascinated and awed scientists and visitors since its discovery under a giant mound of earth more than 60 years ago.

Attachment:
01.jpg
Attachment:
02.jpg

Can someone explain how this question tests SVA?
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go2venkat
Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of the Tigris and Euphrates.


(A) that flourished at the same time as the civilizations

(B) that had flourished at the same time as had the civilizations

(C) that flourished at the same time those had

(D) flourishing at the same time as those did

(E) flourishing at the same time as those were



https://www.nytimes.com/1985/09/24/science/progress-reported-in-struggle-to-save-imperiled-ruins.html

FOR thousands of years, the Indus River has brought the blessing of water for crops and the curse of destructive floods. But today the Indus River poses a new danger to the site of an ancient civilization that flourished at the same time as those in the river valleys of the Tigris and Euphrates and the Nile.

Moisture and salt deposits threaten to erode and destroy the remarkable Mohenjo Daro archeological excavation that has fascinated and awed scientists and visitors since its discovery under a giant mound of earth more than 60 years ago.

Attachment:
01.jpg
Attachment:
02.jpg

Can someone explain how this question tests SVA?

Hello DesiMozart,

We hope this finds you well.

To answer your query, this question does not appear to actually test subject-verb agreement; we believe the inclusion of SVA in the tested topics may have been an oversight.

We hope this helps.
All the best!
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correct answer is a)
c) d) and e) are out because those refer to plural things. The ancient civilization is singular and its non underlined
b) Generally had(past perfect) is used with simple past. Since there is no simple past in the sentence, use of past perfect is wrong
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