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Verb Tense - Present perfect

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Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 05:21
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Question Stats:

81% (00:50) correct 19% (00:59) wrong based on 53 sessions

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Some epidemiologists believe that the Ebola virus originally has emerged from an animal host in less populated regions of Africa where there is more frequent contact between humans and wild animals.

A. has emerged from an animal host in less populated regions of Africa where there is more frequent contact
B. was emerging from an animal host in a sparsely populated region of Africa where there is contact more frequent
C. emerged from an animal host where there is more frequent contact in a sparsely populated region of Africa
D. emerged from an animal host in less populated regions of Africa where there is more frequent contact
E. was emerging in a sparsely populated region of Africa from an animal host where there is more frequent contact
[Reveal] Spoiler: OA

Kudos [?]: 49 [1], given: 253

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Re: Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 05:26
I had selected A instead of D because though D has similar construction and I understand the point of present perfect not required here as the non-underlined section mentions "originally", thus negating the use of present perfect and past tense, emerged is a good choice.

However in the option D, emerged comes after originally and thereafter a comma. I got confused on whether this is a verbed modifier. I still need this clarification

Kindly help carcass souvik101990

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Re: Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 05:34
D it is
A. has emerged from an animal host in less populated regions of Africa where there is more frequent contact [present perfect tense is not required] wrong
B. was emerging from an animal host in a sparsely populated region of Africa where there is contact more frequent [past continuous tense is wrong, the construction of B is also wrong where there is contact more frequent is wrong]
C. emerged from an animal host where there is more frequent contact in a sparsely populated region of Africa ["where"must modify a place, here it is modifying animal host, less populated regions is better] wrong
D. emerged from an animal host in less populated regions of Africa where there is more frequent contact [perfect and right]
E. was emerging in a sparsely populated region of Africa from an animal host where there is more frequent contact [again past continuous is wrong, from an animal host must be close to the noun it is modifying]
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Kudos [?]: 70 [0], given: 251

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Re: Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 09:06
I had selected A instead of D because though D has similar construction and I understand the point of present perfect not required here as the non-underlined section mentions "originally", thus negating the use of present perfect and past tense, emerged is a good choice.

However in the option D, emerged comes after originally and thereafter a comma. I got confused on whether this is a verbed modifier. I still need this clarification

Kudos [?]: 49 [0], given: 253

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Re: Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 11:03
ruchi857 wrote:
I had selected A instead of D because though D has similar construction and I understand the point of present perfect not required here as the non-underlined section mentions "originally", thus negating the use of present perfect and past tense, emerged is a good choice.

However in the option D, emerged comes after originally and thereafter a comma. I got confused on whether this is a verbed modifier. I still need this clarification

Kindly help carcass souvik101990


Actually right option is using the placement of emerged right after originally because it shows that initially how one thing emerged. In fact present perfect is wrong because something has happened in the past.
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Push yourself again and again. Don't give an inch until the final buzzer sounds. -Larry Bird
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Re: Verb Tense - Present perfect [#permalink]

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New post 31 Jul 2017, 22:12
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ruchi857, I don't see a comma in any of the choices. "Emerged" is the verb for the subject "Ebola virus." It's not a modifier.
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Kudos [?]: 1122 [0], given: 29

Re: Verb Tense - Present perfect   [#permalink] 31 Jul 2017, 22:12
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