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By sucking sap from the young twigs of the hemlock tree,

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By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post Updated on: 28 Jun 2017, 02:52
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A
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D
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By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.

A. tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop
B. tree growth is retarded by the woolly adelgid, and this causes the color of needles to change from deep green to grayish green, and their dropping
C. the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping
D. the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop
E. the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and the their dropping

Originally posted by marine on 26 Aug 2004, 03:44.
Last edited by Vyshak on 28 Jun 2017, 02:52, edited 1 time in total.
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 08 Dec 2011, 04:54
pls, help

the word "this" in E is right or wrong. Pls, explain.
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 08 Dec 2011, 08:27
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thangvietnam wrote:
pls, help

the word "this" in E is right or wrong. Pls, explain.


"this" in choice E is totally wrong, this does not refer to anything. If you use "this action (of the woolly adelgid), it will be ok.

Furthermore, choice E make parallelism in the modifier-part with 2 ambiguous items "this" vs "the their dropping".
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 12 Dec 2011, 04:50
By sucking sap from the young twigs of the hemlock tree, <<tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop>> prematurely.

A. tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop
B. tree growth is retarded by the woolly adelgid, and this causes the color of needles to change from deep green to grayish green, and their dropping
wrong ....

C. the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping (and dropping is not parallel to any part of the sentence)
D. the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop
E. the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and the their dropping
(( their refers to what? ))
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 13 Dec 2011, 07:14
A and in fact B are most certainly grammatically wrong becos they belong to the classic case of misplaced modification.The participial modifier By sucking sap from the young twigs of the hemlock tree should be followed by the modified noun namely the woolly adelgid rather than the tree growth. A and B mean as if the tree growth is sucking sap.
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 13 Apr 2016, 20:08
Can we eliminate E on the grounds that 'their dropping' is awkward
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 16 Apr 2016, 13:34
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knuckleduster wrote:
Can we eliminate E on the grounds that 'their dropping' is awkward


In general a possessive noun / pronoun + gerund is perfectly valid combination.

The following link will probably be helpful to get a better concept on this topic:

http://www.english-for-students.com/Pos ... runds.html
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 13 Aug 2017, 21:09
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The sentence begins with a modifier. So, when we get to the comma, we should stop and ask the question that the modifier raises. Here the question is, "Who or what sucks sap from young twigs?" The part immediately following the comma should answer our question in a logical manner.

A. tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop
Tree growth sucks sap from young twigs?
Makes no sense. Eliminate A.

B. tree growth is retarded by the woolly adelgid, and this causes the color of needles to change from deep green to grayish green, and their dropping
Tree growth sucks sap from young twigs?
Makes no sense. Eliminate B.

C. the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping
The woolly adelgid sucks sap from young twigs? Makes sense - keep C for now.

D. the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop
The woolly adelgid sucks sap from young twigs? Makes sense - keep D for now.

E. the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and the their dropping
The woolly adelgid sucks sap from young twigs? Makes sense - keep E for now.

Now, compare C, D and E for other issues.

Note: The retarded tree growth causes 2 things:
1) needles change color
2) needles drop prematurely.

We need parallelism here.

C. the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping
Not parallel. Eliminate.

D. the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop
Parallel. Keep.

E. the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and the their dropping
Not parallel. Eliminate.

Answer is D.
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 19 Nov 2017, 20:33
By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.

A. tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop - Modifier issue -- tree growth is not sucking sap
B. tree growth is retarded by the woolly adelgid, and this causes the color of needles to change from deep green to grayish green, and their dropping - same as A
C. the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping - incorrect usage of which to refer to growth
D. the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop - Correct
E. the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and the their dropping - Parallelism issue and usage of and changes meaning

Answer D
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 20 Jun 2019, 00:49
Can someone please explain why is the answer choice D and not C.
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Re: By sucking sap from the young twigs of the hemlock tree,  [#permalink]

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New post 20 Jun 2019, 23:10
jibberjabber wrote:
Can someone please explain why is the answer choice D and not C.
The which in option C is ambiguous (it could refer to tree growth). Dropping is not correct either (in option D to change and to drop are parallel).

... the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping...
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Re: By sucking sap from the young twigs of the hemlock tree,   [#permalink] 20 Jun 2019, 23:10
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