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SC- Parallel construction- Solar Powered

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SC- Parallel construction- Solar Powered [#permalink] New post 27 Apr 2005, 12:53
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A
B
C
D
E

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To help preserve ancient Egyptian momuments threatened by high water tables, a Swedish engineering firm has proposed installing pumps, perhaps solar powered, to lower the underground water level and dig trenches around the bases of the stone walls.

(A) to lower the underground water level and dig trenches
(B) to lower the underground water level and to dig trenches
(C) to lower the underground water level and digging trenches
(D) that lower the underground water level and trenches be dug
(E) that lower the underground water level and trench diging

Last edited by mbassmbass04 on 27 Apr 2005, 16:32, edited 1 time in total.
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 [#permalink] New post 27 Apr 2005, 16:33
Please explain why it is not B

(i) to lower

(ii) to dig
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 [#permalink] New post 27 Apr 2005, 17:46
I think the reason B is out is because the installed pumps will not/cannot dig trenches.
Note that it only makes sense that he proposed 2 things

1. installing pumps
2. Digging trenches

B makes it sound as if the pump installing will " lower the underground water level and dig trenches around the bases of the stone walls.

Now i stand corrected
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Re: SC- Parallel construction- Solar Powered [#permalink] New post 27 Apr 2005, 18:45
mbassmbass04 wrote:
To help preserve ancient Egyptian momuments threatened by high water tables, a Swedish engineering firm has proposed installing pumps, perhaps solar powered, to lower the underground water level and dig trenches around the bases of the stone walls.

(A) to lower the underground water level and dig trenches
(B) to lower the underground water level and to dig trenches
(C) to lower the underground water level and digging trenches
(D) that lower the underground water level and trenches be dug
(E) that lower the underground water level and trench diging


C it is.

we must discern what kind of parallelism

a Swedish engineering firm has proposed installing pumps .....and digging trenches......

or

a Swedish engineering firm has proposed installing pumps to lower the underground water leve.....and (to) dig trenches......

pumps cannot be renderred to dig trenches.

Hence, C is the OA
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Re: SC- Parallel construction- Solar Powered [#permalink] New post 27 Apr 2005, 19:27
mbassmbass04 wrote:
To help preserve ancient Egyptian momuments threatened by high water tables, a Swedish engineering firm has proposed installing pumps, perhaps solar powered, to lower the underground water level and dig trenches around the bases of the stone walls.

(A) to lower the underground water level and dig trenches
(B) to lower the underground water level and to dig trenches
(C) to lower the underground water level and digging trenches
(D) that lower the underground water level and trenches be dug
(E) that lower the underground water level and trench diging


IC = A Swedish engineering firm has proposted installing pumps.

Phrase A = to lower the underground water level

Phrase B = digging trenches around the bases of the stone walls.

Correct Syntax: IC, Phrase A and Phrase B. The conjuction and joins equal parts, Phrase A and Phrase B.


B: Introduces false parallelism. If phrase B in AC B [to dig trenches] is a part of the parallelism it means installing pumps to dig trenches.......This is wrong.

D: Relative Clause & DC ---> Final Syntax: IC, RC & DC. This creates a run on sentence.

E: Relative Clause & Phrase ----> Final Syntax: IC, RC & Phrase. "and" should join equal parts. Here it joining RC & Phrase [A No No].


A: IC, Phrase & Clause [????]. Is the latter a Clause. It has a noun and a verb. But doesnt have a subject correct? Yes No?? Anyone care to shed some light on this? Why AC "A" is wrong?

Any of the SC gurus please chime in.
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 [#permalink] New post 27 Apr 2005, 19:46
Only C is right by having two gerund phrases being compared to each other to maintain parallellism.

A and B are out because they fail to maintain parallellism as folaa and chunjuwu mentioned. I'll dissect C for you:

To help preserve ancient Egyptian momuments threatened by high water tables(infinitive phrase used as an introductory modifier), a Swedish engineering firm has proposed (1)installing pumps, perhaps solar powered, to lower the underground water level and (2)digging trenches around the bases of the stone walls.

In bold is the IC structure. The two gerund phrases (acting as nouns in the same way that gerunds do) "installing pumps" and "digging trenches" are parallel. Note that "to lower the underground water level" is an infinitive phrase of the second order which modifies the gerund phrase (1)
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 [#permalink] New post 01 May 2005, 13:23
Paul wrote:
Only C is right by having two gerund phrases being compared to each other to maintain parallellism.

A and B are out because they fail to maintain parallellism as folaa and chunjuwu mentioned. I'll dissect C for you:

To help preserve ancient Egyptian momuments threatened by high water tables(infinitive phrase used as an introductory modifier), a Swedish engineering firm has proposed (1)installing pumps, perhaps solar powered, to lower the underground water level and (2)digging trenches around the bases of the stone walls.

In bold is the IC structure. The two gerund phrases (acting as nouns in the same way that gerunds do) "installing pumps" and "digging trenches" are parallel. Note that "to lower the underground water level" is an infinitive phrase of the second order which modifies the gerund phrase (1)



Good explanation. I see why A is wrong. Although i picked "C" [without eliminating A], i wanted to know why A is wrong. It now makes perfect sense.
  [#permalink] 01 May 2005, 13:23
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