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Contrary to popular belief, extinction is a common

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Contrary to popular belief, extinction is a common [#permalink] New post 07 Aug 2011, 17:33
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A
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56% (02:10) correct 44% (01:03) wrong based on 262 sessions
Contrary to popular belief, extinction is a common phenomenon in nature; in fact, the majority of the species that have existed on our planet are already extinct, with most disappearing long before Homo sapiens evolved.

A-have existed on our planet are already extinct, with most
B-have existed on our planet have already become extinct and most are
C-existed on our planet have already become extinct, most of which have
D-exist on our planet have already become extinct, most
E- exist on our planet are now extinct, with most







OA is
[Reveal] Spoiler:
A


I was wondering...how can "have existed" be ok in this sense. Doesn't that have in the sentence make have existed a present perfect tense? And with that, implies that the species do exist? I thought that present perfect meant an ongoing event.

I guess what I am trying to say is: The species that are extinct can no longer exist, so why the have?
[Reveal] Spoiler: OA
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Re: Extinct Species [#permalink] New post 07 Aug 2011, 17:55
I agree with you, I would prefer "existed" to "have existed". But the only choice with existed has a major problem in the end (".....most of which have disappearing" - totally incorrect). A may sound awkward but is the one left after elimination

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Re: Extinct Species [#permalink] New post 07 Aug 2011, 19:07
Thanks crick but i still dont understand how present perfect works in this situation

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Re: Extinct Species [#permalink] New post 07 Aug 2011, 22:25
A for me

"have existed" sound good over here. It includes all the species which were there from the very beginning to the ones that are now - present perfect makes sense.
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Re: Extinct Species [#permalink] New post 08 Aug 2011, 00:03
Present perfect also makes sense when you don't know the timing of the event.
For example "Sam has seen Europe". Here the time when Sam saw Europe is not clear.

I think in the same context we can use present perfect in the above quesion. Hence the answer is "A"
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Re: Extinct Species [#permalink] New post 08 Aug 2011, 10:19
This feels like a tricky one, hopefully someone has a more concrete answer
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Re: Extinct Species [#permalink] New post 09 Aug 2011, 02:31
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i chose A after eliminating other choices,but even i would have preferred 'existed' rather than 'have existed'
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Re: Extinct Species [#permalink] New post 09 Aug 2011, 04:09
Expert's post
Present perfect can also be used in situations when an event or action has just ended before the present; it does not matter whether it will recur or not.
E.G: I have just finished reading Hemingway’s novel.
He has been a crooked criminal until yesterday; now he preaches spirituality
Therefore, I think we can accept A in this case

Present perfect can also be used when we do not affix a specific and pointed time for the occurrence . say for e.g; Lately, there have been a number of under- sea earth quakes in the Pacific Ocean
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Re: Extinct Species [#permalink] New post 09 Aug 2011, 04:18
daagh wrote:
Present perfect can also be used in situations when an event or action has just ended before the present; it does not matter whether it will recur or not.
E.G: I have just finished reading Hemingway’s novel.
He has been a crooked criminal until yesterday; now he preaches spirituality
Therefore, I think we can accept A in this case

Present perfect can also be used when we do not affix a specific and pointed time for the occurrence . say for e.g; Lately, there have been a number of under- sea earth quakes in the Pacific Ocean


Contrary to popular belief, extinction is a common phenomenon in nature; in fact, the majority of the species [b]that have existed on our planet are already extinct,[/b] with most disappearing long before Homo sapiens evolved.

Selected B, I thought "that have existed on our planet are already extinct" as a essential modifier and there is no working verb in sentence, but looks like I missed something. Can someone please put light why this is not acting as a modifier (because of comma ?)?

Thanks in advance.
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Re: Extinct Species [#permalink] New post 10 Aug 2011, 22:34
rphardu wrote:
daagh wrote:
Present perfect can also be used in situations when an event or action has just ended before the present; it does not matter whether it will recur or not.
E.G: I have just finished reading Hemingway’s novel.
He has been a crooked criminal until yesterday; now he preaches spirituality
Therefore, I think we can accept A in this case

Present perfect can also be used when we do not affix a specific and pointed time for the occurrence . say for e.g; Lately, there have been a number of under- sea earth quakes in the Pacific Ocean


Contrary to popular belief, extinction is a common phenomenon in nature; in fact, the majority of the species [b]that have existed on our planet are already extinct,[/b] with most disappearing long before Homo sapiens evolved.

Selected B, I thought "that have existed on our planet are already extinct" as a essential modifier and there is no working verb in sentence, but looks like I missed something. Can someone please put light why this is not acting as a modifier (because of comma ?)?

Thanks in advance.


You are missing "are" in the last part of the sentence in B " and most are disappearing" which is incorrect.
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 07 Nov 2011, 20:59
Among all the choices A is the best.
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 05 Jun 2012, 21:31
milanproda wrote:
Contrary to popular belief, extinction is a common phenomenon in nature; in fact, the majority of the species that have existed on our planet are already extinct, with most disappearing long before Homo sapiens evolved.

A-have existed on our planet are already extinct, with most
B-have existed on our planet have already become extinct and most are
C-existed on our planet have already become extinct, most of which have
D-exist on our planet have already become extinct, most
E- exist on our planet are now extinct, with most









OA is
[Reveal] Spoiler:
A


I was wondering...how can "have existed" be ok in this sense. Doesn't that have in the sentence make have existed a present perfect tense? And with that, implies that the species do exist? I thought that present perfect meant an ongoing event.

I guess what I am trying to say is: The species that are extinct can no longer exist, so why the have?



i chosen B. i dont know whats wrong with B. could you please explain it bit further. lets quantify the scenario. God sent 100 species at first to earth. out of 100, 80 have become extinct before before introducing homo sapiens. umm....now it is seems a bit clear to me. the intended meaning is distorted. it means 80 species have already extinct and the process is continuing BUT the intended meaning is that Homo sapiens is 101th species. so when homo sapiens is introduced 80 species dont existed on earth......please clarify me. am i right or wrong.

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Re: Contrary to popular belief, extinction is a common [#permalink] New post 06 Jun 2012, 18:46
Quickly eliminate C/D/E from the beginning of each. A/B remain. Eliminate B because "most are disappearing".
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 13 Jun 2012, 04:56
IMO A... was easy to trace because of "disappearing" after the underlined portion.
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 13 Jun 2012, 07:27
IMO A it is...though existed would have made this a better choice. Other options don't fit correctly.
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 13 Jun 2012, 11:46
A: It is stated that extinction is a common phenomenon hence it's a continuing process We are talking about extinct species: some of them could have ceased to exist yesterday --> present perfect.

B: the species are disappearing long before Homo Sapiens evolved (wrong use of tenses)
C: have disappearing - wrong
D and E: wrong use of "exist" in present simple: those species no longer exist
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 14 Jun 2012, 01:36
Ok..I get everyone's explanation now.

But, can someone explain to me when it is "proper" to use with after comma. A few examples would be greatly appreciated :)
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 07 Oct 2012, 00:25
Contrary to popular belief, extinction is a common phenomenon in nature; in fact, the majority of the species that have existed on our planet are already extinct, with most disappearing long before Homo sapiens evolved.

A-have existed on our planet are already extinct, with most //answer
B-have existed on our planet have already become extinct and most are // are is incorrect and we dont need a second have
C-existed on our planet have already become extinct, most of which have // have disappearing is incorrect
D-exist on our planet have already become extinct, most // exist is incorrect
E- exist on our planet are now extinct, with most // same as D
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Re: Contrary to popular belief, extinction is a common [#permalink] New post 05 Dec 2012, 04:13
I've also chosen A, tough at first I was also looking for an answer without Present Perfect tense. Actually, I remember to have read that Present Perfect can sometimes be used for situations, in which the activity is over, but you stil have the effects of what has happened. In this case all animals are still extinct, which is probably the best explanation why Present Perfect is acceptable here.

Let me know if you have any questions.

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Re: Contrary to popular belief, extinction is a common [#permalink] New post 05 Dec 2012, 11:04
Why the with, on answer A, is correct? It is modifying extinct. Shouldnt' be incorrect?
Re: Contrary to popular belief, extinction is a common   [#permalink] 05 Dec 2012, 11:04
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