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by ayushiiitm » Wed Jul 14, 2010 7:06 am
His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas

(A) in which great ice sheets had existed in what are now temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

i chose D

but explanation says past perfect should not be used. Instead existed should be used

Also 'when' should be used, since time is being considered.

OA later

Another confusion i have is regarding His

His is a possessive pronoun, like 'those'. Can the possessive pronoun be used before the referent. I had read somewhere that possessive pronoun should always come after the referent has already been stated
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by gmat_perfect » Wed Jul 14, 2010 7:21 am
ayushiiitm wrote:His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas

(A) in which great ice sheets had existed in what are now temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

i chose D

but explanation says past perfect should not be used. Instead existed should be used

Also 'when' should be used, since time is being considered.

OA later

Another confusion i have is regarding His

His is a possessive pronoun, like 'those'. Can the possessive pronoun be used before the referent. I had read somewhere that possessive pronoun should always come after the referent has already been stated
Answer:

1. If there are two related past events, we should use the past perfect tense for the more past one.

=> There is only one event. So, we should ignore the use of past perfect.

Eliminate the options A and D.
2. There are/there were' is very often treated as redundant in GMAT land.

=> Eliminate the option C.

3.Adverb modifies the verb. So, adverb should be used very near to the verb.

=> Now that are is awkward and misleading.
Eliminate E.

Answer is B
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by paes » Wed Jul 14, 2010 7:44 am
read the expert comment

https://www.beatthegmat.com/past-perfect ... 05-15.html
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by kamalsinghy » Wed Jul 14, 2010 7:46 am
"concept of an age" i.e. Louis is still not sure whether that age existed or not, therefore past perfect usage should be avoided since the age did not exist in reality. Even I would say that because of "concept of an age", "when" usage is not perfect.

Now we are left with B,C and E.

In E, "areas now that" indicates that "ice sheets" existed in areas now; such construction is nonsensical.

In C, "existed where there" is not proper to express the idea.

Ans B.
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by paes » Wed Jul 14, 2010 7:49 am
gmat_perfect wrote:
ayushiiitm wrote:His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas

(A) in which great ice sheets had existed in what are now temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

i chose D

but explanation says past perfect should not be used. Instead existed should be used

Also 'when' should be used, since time is being considered.



OA later

Another confusion i have is regarding His

His is a possessive pronoun, like 'those'. Can the possessive pronoun be used before the referent. I had read somewhere that possessive pronoun should always come after the referent has already been stated
Answer:

1. If there are two related past events, we should use the past perfect tense for the more past one.

=> There is only one event. So, we should ignore the use of past perfect.

Eliminate the options A and D.
2. There are/there were' is very often treated as redundant in GMAT land.

=> Eliminate the option C.

3.Adverb modifies the verb. So, adverb should be used very near to the verb.

=> Now that are is awkward and misleading.
Eliminate E.

Answer is B
IMO : B

why E is wrong : not convinced with your logic
I think E is wrong because moderate is an adjective, so it should come with areas.

If there is some other good, straight reason to avoid E, please explain.
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by kvcpk » Wed Jul 14, 2010 7:57 am
paes wrote:
gmat_perfect wrote:
ayushiiitm wrote:His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas

(A) in which great ice sheets had existed in what are now temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

i chose D

but explanation says past perfect should not be used. Instead existed should be used

Also 'when' should be used, since time is being considered.



OA later

Another confusion i have is regarding His

His is a possessive pronoun, like 'those'. Can the possessive pronoun be used before the referent. I had read somewhere that possessive pronoun should always come after the referent has already been stated
Answer:

1. If there are two related past events, we should use the past perfect tense for the more past one.

=> There is only one event. So, we should ignore the use of past perfect.

Eliminate the options A and D.
2. There are/there were' is very often treated as redundant in GMAT land.

=> Eliminate the option C.

3.Adverb modifies the verb. So, adverb should be used very near to the verb.

=> Now that are is awkward and misleading.
Eliminate E.

Answer is B
IMO : B

why E is wrong : not convinced with your logic
I think E is wrong because moderate is an adjective, so it should come with areas.

If there is some other good, straight reason to avoid E, please explain.
in E, "that" is referring to "now". It should refer to "areas"
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by gmat_perfect » Wed Jul 14, 2010 9:00 am
paes wrote:
gmat_perfect wrote:
ayushiiitm wrote:His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas

(A) in which great ice sheets had existed in what are now temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate

i chose D

but explanation says past perfect should not be used. Instead existed should be used

Also 'when' should be used, since time is being considered.



OA later

Another confusion i have is regarding His

His is a possessive pronoun, like 'those'. Can the possessive pronoun be used before the referent. I had read somewhere that possessive pronoun should always come after the referent has already been stated
Answer:

1. If there are two related past events, we should use the past perfect tense for the more past one.

=> There is only one event. So, we should ignore the use of past perfect.

Eliminate the options A and D.
2. There are/there were' is very often treated as redundant in GMAT land.

=> Eliminate the option C.

3.Adverb modifies the verb. So, adverb should be used very near to the verb.

=> Now that are is awkward and misleading.
Eliminate E.

Answer is B
IMO : B

why E is wrong : not convinced with your logic
I think E is wrong because moderate is an adjective, so it should come with areas.

If there is some other good, straight reason to avoid E, please explain.
@Paes,

when great ice sheets existed in areas now that are temperate.

=> 'now that are temperate' means now is temperate. Does it make sense?

Got it?
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by paes » Wed Jul 14, 2010 9:13 am
gmat_perfect and kvcp :

that can refer to areas also.

There is no strict rule for -> 'that' refer only to nearest noun.

You can see many examples in OG where that is not referring to nearest noun.
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