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A team of researchers reported that five endangered birds species had

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A team of researchers reported that five endangered birds species had  [#permalink]

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New post 29 Apr 2016, 03:25
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A team of researchers reported that five endangered birds species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.

(a) investigated nesting boxes erected by volunteers having been

(b) begun investigating nesting boxes erected by volunteers, being

(c) investigating nesting boxes, erected by volunteers,

(d) were investigating nesting boxes erected by volunteers

(e) investigate nesting boxes erected by volunteers, which
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 29 Apr 2016, 23:07
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We can start with parallelism. When we see "had resumed nesting OR," we have two choices for what follows:

1) We can use another past participle to continue the past perfect set up by the word "had." A and B both go this route. ("had resumed . . . or investigated" and "had resumed . . . or begun")
2) We can use another verb parallel to had. We can continue the past perfect by repeating "had" ("had resumed . . . or had investigated"), but none of the answer choices do this, and if we want to continue the past perfect, we can just go with option 1. We don't really need a second "had" here, especially with the two parallel parts so close together. We can also use a new verb to shift tense, as in D ("had resumed . . . or were investigating"). It's perfectly valid to shift tense if the meaning makes sense. Here, the meaning is that all of the five species either had already resumed nesting or were currently investigating the new boxes.

So A, B, and D are all possibilities. C and E are not parallel, so we can cut them.

A and B both get into trouble with modifiers at the end. The present participle "having been" doesn't make sense to refer to the volunteers, who must have been ferried in before all the previous action. (They were ferried in and placed the boxes, and then the birds investigated the boxes.) In any case, "volunteers having been ferried" just doesn't work. As for B, you may have seen that "being" is usually a red flag, and that's the case again here. In its current placement (following the action and preceded by a comma), it introduces an adverbial modifier. In that case, it would seem to modify the birds' action, and that doesn't make sense.

That leaves us with D. Notice that nothing is required between "volunteers" and "ferried." It's perfectly fine to attach a past participle directly to a noun to serve as a modifier.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 08 Jul 2016, 11:57
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A team of researchers reported that five endangered birds species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.

Now lets understand the message(meaning) the sentence is trying to convey.

Meaning:
A team of researchers reported that some birds have resumed nesting OR something that appears to be nesting but is not .

Another things to notice here is the parallelism between the verbs(gerunds) separated by OR.The first gerund is nesting so the second verb should be parallel to this . This leaves us with B,C and D.



(b) begun investigating nesting boxes erected by volunteers, being being implies that researchers are still being ferried and this makes no sense

(c) investigating nesting boxes, erected by volunteers, had <fluff> nesting OR investigating nesting boxes -- missing verb and not parrallel in structure.

(d) were investigating nesting boxes erected by volunteers structure (had and were are parallel) is good, gerunds are parrallel & meaning is crisp
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 30 Apr 2016, 07:27
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DmitryFarber wrote:
We can start with parallelism. When we see "had resumed nesting OR," we have two choices for what follows:

1) We can use another past participle to continue the past perfect set up by the word "had." A and B both go this route. ("had resumed . . . or investigated" and "had resumed . . . or begun")
2) We can use another verb parallel to had. We can continue the past perfect by repeating "had" ("had resumed . . . or had investigated"), but none of the answer choices do this, and if we want to continue the past perfect, we can just go with option 1. We don't really need a second "had" here, especially with the two parallel parts so close together. We can also use a new verb to shift tense, as in D ("had resumed . . . or were investigating"). It's perfectly valid to shift tense if the meaning makes sense. Here, the meaning is that all of the five species either had already resumed nesting or were currently investigating the new boxes.

So A, B, and D are all possibilities. C and E are not parallel, so we can cut them.

A and B both get into trouble with modifiers at the end. The present participle "having been" doesn't make sense to refer to the volunteers, who must have been ferried in before all the previous action. (They were ferried in and placed the boxes, and then the birds investigated the boxes.) In any case, "volunteers having been ferried" just doesn't work. As for B, you may have seen that "being" is usually a red flag, and that's the case again here. In its current placement (following the action and preceded by a comma), it introduces an adverbial modifier. In that case, it would seem to modify the birds' action, and that doesn't make sense.

That leaves us with D. Notice that nothing is required between "volunteers" and "ferried." It's perfectly fine to attach a past participle directly to a noun to serve as a modifier.


Many thanks Farber.. you help is highly appreciated

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A team of researchers reported that five endangered birds species had  [#permalink]

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New post 07 Jul 2016, 19:01
DmitryFarber wrote:
We can start with parallelism. When we see "had resumed nesting OR," we have two choices for what follows:

1) We can use another past participle to continue the past perfect set up by the word "had." A and B both go this route. ("had resumed . . . or investigated" and "had resumed . . . or begun")
2) We can use another verb parallel to had. We can continue the past perfect by repeating "had" ("had resumed . . . or had investigated"), but none of the answer choices do this, and if we want to continue the past perfect, we can just go with option 1. We don't really need a second "had" here, especially with the two parallel parts so close together. We can also use a new verb to shift tense, as in D ("had resumed . . . or were investigating"). It's perfectly valid to shift tense if the meaning makes sense. Here, the meaning is that all of the five species either had already resumed nesting or were currently investigating the new boxes.

So A, B, and D are all possibilities. C and E are not parallel, so we can cut them.

A and B both get into trouble with modifiers at the end. The present participle "having been" doesn't make sense to refer to the volunteers, who must have been ferried in before all the previous action. (They were ferried in and placed the boxes, and then the birds investigated the boxes.) In any case, "volunteers having been ferried" just doesn't work. As for B, you may have seen that "being" is usually a red flag, and that's the case again here. In its current placement (following the action and preceded by a comma), it introduces an adverbial modifier. In that case, it would seem to modify the birds' action, and that doesn't make sense.

That leaves us with D. Notice that nothing is required between "volunteers" and "ferried." It's perfectly fine to attach a past participle directly to a noun to serve as a modifier.


Many thanks DmitryFarber for the detailed explanation.

One more query please -
In option C
a. If " ," is removed after volunteers then will it option be correct?
b. In this option , can "had resumed nesting or investigating " considered parallel.
If not please please explain the error.

I have rewritten the sentence BELOW with the two points mentioned above.

A team of researchers reported that five endangered birds species had resumed nesting or investigating nesting boxes, erected by volunteers ferried out to the island last month.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 08 Jul 2016, 10:59
inakihernandez wrote:
A team of researchers reported that five endangered birds species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.

(a) investigated nesting boxes erected by volunteers having been

(b) begun investigating nesting boxes erected by volunteers, being

(c) investigating nesting boxes, erected by volunteers,

(d) were investigating nesting boxes erected by volunteers

(e) investigate nesting boxes erected by volunteers, which


-ed form of verb in 'ferried' should modify volunteers as the meaning of the sentence implies 'boxes erected by volunteers (that were) ferried out to island. A, B, C and E are out.

',' after 'volunteers' is not required as in choice C.

'Had resumed' must find a parallel element in underlined part.

D is the answer
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 24 Jul 2016, 00:12
why can't C be the answer? I really don't get it after seeing the explanations posted above. Explaining answer C in more dtail would be appreciated. thank you
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 30 Jul 2016, 01:27
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kimkm509, there are several problems with C.

First, although the word "investigating" may seem to be parallel with "resuming," it doesn't work that way. Unlike all the other choices, this would imply that investigating nesting boxes is something the birds had resumed doing, rather than something they were now starting. This doesn't fit the meaning conveyed elsewhere. This would be especially confusing, given the placement of an object (nesting boxes) directly afterward. We wouldn't say "I have started studying and playing the piano," unless it's the piano we were studying. Similarly, it might appear here that the verbs "nesting" and "investigating" both applied to the object "nesting boxes." This doesn't make sense.

Another error unique to C is the use of commas to separate the modifier "erected by volunteers" from the rest of the action. This makes it seem that it was the nesting boxes, and not the volunteers, that were ferried out to the island.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 30 Jul 2016, 01:42
gmatlbs, I hope my response above addresses your concerns, too. I should add that the comma before "erected" is incorrect, too. Since "erected by volunteers" modifies the preceding noun, there's no need for a comma here, and its use only adds confusion as to what we're trying to modify.
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A team of researchers reported that five endangered birds species had  [#permalink]

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New post 31 Jul 2016, 23:08
A team of researchers reported that five endangered birds species had resumed nesting or investigated nesting boxes erected by volunteers having been ferried out to the island last month.

(a) investigated nesting boxes erected by volunteers having been =>

having been ferried out ----refers to volunteers, so wrong.

(b) begun investigating nesting boxes erected by volunteers, being ==> being refers to bird species. ferried out should refer to boxes as done in C properly.


(c) investigating nesting boxes, erected by volunteers,
ferried out refers to "volunteer" so wrong.

(d) were investigating nesting boxes erected by volunteers

"were" is also wrong. First sentence is in past perfect. past tense in sentence doesnt make sense here.
having been ferried out ----refers to volunteers, so wrong.

(e) investigate nesting boxes erected by volunteers, which

which ----refers to volunteers, so wrong.

I dont understand why C is wrong and Not D.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 31 Jul 2016, 23:26
abrakadabra21, there is a shift in D from past perfect to the simple past. The birds either had already resumed nesting or were currently investigating nesting boxes.

Also, I'm not sure what you mean about the modifier referring to volunteers. The correct meaning is that the volunteers were ferried out, and that's what most of the choices (including D) convey. The "having been" phrase you describe does not appear in D.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 03 Aug 2016, 18:56
DmitryFarber Do you know any other examples that have the same sentence structure?
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 07 Aug 2016, 22:38
DmitryFarber

DmitryFarber wrote:
2) We can also use a new verb to shift tense, as in D ("had resumed . . . or were investigating"). It's perfectly valid to shift tense if the meaning makes sense. Here, the meaning is that all of the five species either had already resumed nesting or were currently investigating the new boxes.


I had difficulty in understanding the meaning of correct option choice D.

birds species had resumed nesting... Past Perfect

or

birds species were investigating nesting boxes ... Past Continuous

How the usage of Past perfect is justified in above case. I understand past perfect is used to show the sequencing of two events occurred in past.

First Event : Past Perfect ; Second Event : Simple past

Since there was no event expressed in Simple past, I ruled out this option.

Is it correct to use the Past perfect with past continuous to express sequencing of two events?

Kindly clarify.
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A team of researchers reported that five endangered birds species had  [#permalink]

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sahilmalhotra01 wrote:
How the usage of Past perfect is justified in above case. I understand past perfect is used to show the sequencing of two events occurred in past.

First Event : Past Perfect ; Second Event : Simple past

Since there was no event expressed in Simple past, I ruled out this option.

Hi Sahil, your understanding on Past Perfect is perfect :) .

The two events are:

(i) A team of researchers reported
(ii) Five endangered birds species had resumed nesting

Since (ii) happened earlier, it is expressed as past perfect, while (i) happened later and hence, is expressed in simple past.

p.s. Our book EducationAisle Sentence Correction Nirvana discusses Past perfect tense, its application and examples in significant detail. If someone is interested, PM me your email-id, I can mail the corresponding section.
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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 08 Aug 2016, 05:50
I like to draw a time line. So that I know the first verb is going to be the one with that requires past perfect... drawing a line and sequencing from left to right really eliminates confusion for me.

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Re: A team of researchers reported that five endangered birds species had  [#permalink]

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New post 09 Sep 2018, 02:26
EducationAisle wrote:
sahilmalhotra01 wrote:
How the usage of Past perfect is justified in above case. I understand past perfect is used to show the sequencing of two events occurred in past.

First Event : Past Perfect ; Second Event : Simple past

Since there was no event expressed in Simple past, I ruled out this option.

Hi Sahil, your understanding on Past Perfect is perfect :) .

The two events are:

(i) A team of researchers reported
(ii) Five endangered birds species had resumed nesting

Since (ii) happened earlier, it is expressed as past perfect, while (i) happened later and hence, is expressed in simple past.



p.s. Our book EducationAisle Sentence Correction Nirvana discusses Past perfect tense, its application and examples in significant detail. If someone is interested, PM me your email-id, I can mail the corresponding section.


I have to disagree with you here. By definition, the use of past perfect is correct when there are two RELATED events that happened in different points of time in the past and when there are no indicators of time present such as "before" "after"...

In this case, I believe the two events in comparison are :
1st event: had resumed nesting
2nd event: were investigating nesting boxes.

Thus, the meaning of the sentence is the researchers reported that either birds had already begun nesting (even without the help of nesting boxes) or they were investigating the nesting boxes delivered by the volunteers.
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Re: A team of researchers reported that five endangered birds species had &nbs [#permalink] 09 Sep 2018, 02:26
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