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Past tense vs Past perfect

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by gmatjeet » Mon Jun 27, 2011 10:47 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

OA : B

I have understood all parts of the question. There is only one doubt which i have with the explanation.

OG says the verb form should be SIMPLE PAST "EXISTED" rather than PAST PERFECT "HAD EXISTED". I am unable to understand this.

"led" Louis Agassiz - past tense
concept of an age in which great ice sheets "had existed" - past perfect

As per me the above correctly shows chronological sequence of events.

Can some expert please explain?
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by aspirant2011 » Mon Jun 27, 2011 11:38 am
I feel simple past tense is preferable to past perfect and moreover I feel though not sure that option A changes the intended meaning of the sentence by introducing had existed
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by sameerballani » Mon Jun 27, 2011 7:46 pm
gmatjeet 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

OA : B

I have understood all parts of the question. There is only one doubt which i have with the explanation.

OG says the verb form should be SIMPLE PAST "EXISTED" rather than PAST PERFECT "HAD EXISTED". I am unable to understand this.

"led" Louis Agassiz - past tense
concept of an age in which great ice sheets "had existed" - past perfect

As per me the above correctly shows chronological sequence of events.

Can some expert please explain?


It should be be simple past reason being- led x to propose Y (Y is a general statement and simple past would be preferred)
we need to understand that tense should be same as for AGE IN WHICH, so if we use past perfect. ice sheets go earlier than this age.
I hope i make some sense
Thanks
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