past and past perfect

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tanviet: Legendary Member; Posts: 1404; Joined: Tue May 20, 2008 6:55 pmFollowed by: 2 members; Thanked: 18 times

by tanviet » Sun May 24, 2009 9:04 pm

//Five hundred million different species of living creatures have appeared on Earth, nearly 99percent of them vanishing.//

a,

b, Nearly 99percent of five hundred million different species of living creatures that appeared on Earth have vanished

c, Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.

d, Of five hundred million defferent species of living creatures that have appeared on Earth, nearly 99percent of them have vanished

e, Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99percent have vanished

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Source: Beat The GMAT — Sentence Correction | Sun May 24, 2009 9:04 pm

rameshthammanna: Newbie | Next Rank: 10 Posts; Posts: 7; Joined: Thu May 07, 2009 11:12 pm; Thanked: 1 times

by rameshthammanna » Sun May 24, 2009 10:02 pm

Is (e) the answer?

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rookiez: Master | Next Rank: 500 Posts; Posts: 132; Joined: Thu Mar 26, 2009 7:53 pm; Location: Gurgaon; Thanked: 1 times

by rookiez » Mon May 25, 2009 4:58 am

One between D & E??

What is the OA and Source?

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Domnu: Master | Next Rank: 500 Posts; Posts: 385; Joined: Sun May 24, 2009 3:55 pm; Thanked: 11 times; GMAT Score:740

by Domnu » Mon May 25, 2009 7:00 am

I would go with E. Here's why:

[spoiler](A) - not a complete sentence
(B) - 99% of __ of ___ ? Too many of's
(C) - Not the best way.
(D) - Missing 'the' between Of and the next part of the sentence.
(E) - This is correct.[/spoiler]

OA?

Have you wondered how you could have found such a treasure? -T

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marshmallow: Senior | Next Rank: 100 Posts; Posts: 31; Joined: Wed May 20, 2009 7:06 pm; Location: Shanghai, China, the People's Republic of

by marshmallow » Mon May 25, 2009 7:03 am

I assume the answer would be E?
Coz I think D omit a "the" before "five million". This should be an important mistake."

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vaishalijain7: Master | Next Rank: 500 Posts; Posts: 102; Joined: Sun Mar 29, 2009 7:21 pm; Location: toronto; Thanked: 5 times

by vaishalijain7 » Mon May 25, 2009 1:09 pm

IMO 'B'. There are two events discussed, first is 'appeared' and the second is 'vanished'. 'Appeared' happened first and 'vanished' next so first event should be in simple past and next one in present perfect.

What is OA?

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mehravikas: Legendary Member; Posts: 1161; Joined: Mon May 12, 2008 2:52 amFollowed by: 1 member; Location: Sydney; Thanked: 23 times

by mehravikas » Mon May 25, 2009 7:17 pm

Confused between 'B' and 'E'..but I'll go with 'B' as it looks concise..

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aman.kr.jha: Newbie | Next Rank: 10 Posts; Posts: 5; Joined: Fri May 22, 2009 12:22 am

by aman.kr.jha » Mon May 25, 2009 10:06 pm

B seems correct.
If nebody finds finds ne mistake in B. Plz correct me.

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nervesofsteel: Legendary Member; Posts: 594; Joined: Thu Aug 14, 2008 11:51 pm; Thanked: 12 times

by nervesofsteel » Mon May 25, 2009 10:43 pm

IMO E

d, Of five hundred million defferent species of living creatures that have appeared on Earth, nearly 99percent of them have vanished<- modifier usage... and the use of pronoun "them " is not required...

e, Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99percent have vanished<- Correct usage of modifier....

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rahulg83: Legendary Member; Posts: 575; Joined: Tue Nov 04, 2008 2:58 amFollowed by: 4 members; Location: India; Thanked: 18 times; GMAT Score:710

by rahulg83 » Tue May 26, 2009 10:14 am

I'd have chosen B

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The GMAT Chef: Junior | Next Rank: 30 Posts; Posts: 18; Joined: Sat May 16, 2009 2:11 pm; Location: San Francisco Bay Area

Re: past and past perfect

by The GMAT Chef » Tue May 26, 2009 2:51 pm

duongthang wrote://Five hundred million different species of living creatures have appeared on Earth, nearly 99percent of them vanishing.//

a,

b, Nearly 99percent of five hundred million different species of living creatures that appeared on Earth have vanished

c, Vanished are nearly 99percent of the five hundred million different species of living creatures that appeared on Earth.

d, Of five hundred million defferent species of living creatures that have appeared on Earth, nearly 99percent of them have vanished

e, Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99percent have vanished

marshmallow s right. (B) is incorrect mainly because of the omission of the definite article "the". Because of the presence of the relative pronoun that, the sentence needs a definite article.
You say: "I took 99% of the GMAT lessons..." but not "I took 99% of GMAT lessons..."
Answer (D) is redundant besides having the same mistake as (B) ; "of them" is not needed.

Dakar Azu is The GMAT Chef. He has sweet recipes for virtually every type of GMAT question, be it quantitative or verbal. Dakar has been teaching the GMAT since 2003 and is the founder of GMATLounge at https://gmatlounge.com , 700-GMAT Club at https://700gmatclub.com ,
and GMATVideos at https://gmatvideos.com .

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vaishalijain7: Master | Next Rank: 500 Posts; Posts: 102; Joined: Sun Mar 29, 2009 7:21 pm; Location: toronto; Thanked: 5 times

by vaishalijain7 » Tue May 26, 2009 5:50 pm

Hi, I am a non native english speaker, Can anyone please tell me where could I find this rule "Because of the presence of the relative pronoun 'that', the sentence needs a definite article 'the' ". Is this somewhere mentioned in MGMAT SC guide?

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The GMAT Chef: Junior | Next Rank: 30 Posts; Posts: 18; Joined: Sat May 16, 2009 2:11 pm; Location: San Francisco Bay Area

Relative Pronouns

by The GMAT Chef » Tue May 26, 2009 6:54 pm

vaishalijain7 wrote:Hi, I am a non native english speaker, Can anyone please tell me where could I find this rule "Because of the presence of the relative pronoun 'that', the sentence needs a definite article 'the' ". Is this somewhere mentioned in MGMAT SC guide?

Hi vaishalijain7

What I said is in the context of the sentence at hand. If you're identifying an object, a person, or an animal (not previously identified by name or otherwise) as it is the case in choice (B), you need to use the definite article. Of course, there are cases in which you can use "that" without the definite article.
This site may help you out in the use of relative pronouns:

https://esl.about.com/library/grammar/bl ... define.htm

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vaishalijain7: Master | Next Rank: 500 Posts; Posts: 102; Joined: Sun Mar 29, 2009 7:21 pm; Location: toronto; Thanked: 5 times

by vaishalijain7 » Wed May 27, 2009 8:17 am

thanks The GMAT Chef for your response.

duongthang, can you please post the OA?

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