SC for V-ing form!!

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SC for V-ing form!!

by alan7858 » Mon Apr 26, 2010 7:01 pm
When I see the question that have "V-ing", it makes me nerves.
I can Not tell the difference between each V-ing that is use as gerund, present participle (to modify the whole clause) , or present participle ( modify the single N right before the comma). Due to the reason that I am not a native speaker, it is hard for me to tell V-ing form is use as what function.

EX1:
In the past several years, astronomers have detected more than 80 massive planets, most of them as large or larger than Jupiter, which circle other stars.
A)most of them as large or larger than Jupiter, which circle
B)most of them as large or larger than Jupiter and circling
C)most of them at least as large as Jupiter, circling
D)mostly at least as large as Jupiter, which circle
E)mostly as large or larger than Jupiter, circling
OA:C

Here, "circling" I believe is use as modify the N before the comma.

EX2:
In Britain, "pig" refers to any member of the class of domestic swine, but in the United States the term refers only to younger swine not yet ready for market and weighing less than 82 kilograms.

"Weighing" is use as Verb? Or gerund? And how to I know which N it modify?

EX3:
Obtaining an investment-grade rating will keep the county's future borrowing costs low, protect its already-tattered image, and increase its ability to buy bond insurance.

Here, "obtaining", what's the function of this? Isn't it suppose be a main subject that can do this action?

EX4:
Five fledgling sea eagles left their nests in western Scotland this summer, bringing to 34 the number of wild birds successfully raised since transplants from Norway began in 1975.
(A) bringing
(B) and brings
(C) and it brings
(D) and it brought
(E) and brought

Here, I believe "bringing" is referring to the whole main clause.


I know the basic for all different type of function of V-ing form, but I would need some help to find a "pattern" or a grammar rules that under what circumstance is the V-ing use as?

thx
Source: — Sentence Correction |

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by Stacey Koprince » Wed Apr 28, 2010 8:36 am
Received a PM asking me to reply. Some good questions.

First, the -ing form of a word is ONLY being used as a verb if some from of the verb "to be" precedes it. Examples:

I am walking to school.
She is studying hard.

If some form of the verb "to be" is not right before it, then the -ing word is not being used as a verb in that sentence; it's something else. (As you've noted, there are still a lot of things it could be.)

You don't give sources for your first and fourth examples (which are complete GMAT-format problems), so I can't address them directly, but we can discuss similar examples.

Researchers have detected more than 10 black holes, most of them as large as the Earth, (which circle / circling) other stars.

This one is really tricky. The stuff between the two commas is a modifier of the noun "black holes." It's there just to mess you up. Chop it out of the sentence and see what happens:

Researchers have detected more than 10 black holes (which circle / circling) other stars. (Note: the commas disappear - they're only in the original sentence to set off that modifier.)

In this case, we're choosing between "10 black holes which circle..." or "10 black holes circling..." Technically, you could use either one of those. We actually have to use some other reason to decide between these two options. (The former probably wouldn't show up as a correct answer; the real test prefers to have a comma separating a "which" modifier - but the real test also doesn't typically test us on that particular preference.) In either case, the modifier is a noun modifier referring to "black holes."

Ex2 contains parallelism:
the term refers to swine A and B, where A and B are noun modifiers referring to the noun swine:
the term refers to swine not yet ready for market
the term refers to swine weighing less than 82 kg.

Ex3 has two -ing words, both in noun (gerund) form:

Obtaining (something) will keep the costs low. The act/action of obtaining (something) is the subject.
Rating is also an -ing word; this one is perhaps easier to recognize as a noun because it has the article "an" and an adjective before it.

Ex4:
This is a classic example of a "comma -ing" adverbial modifier, which does modifier the entire preceding clause.

The thing that's jumping out at me here is that you may need some practice with breaking sentences down into the core (subjects and verbs, possibly objects, necessary extensions) and its modifiers. If you can "separate" out the modifiers and recognize when parallelism comes into play, then it can be easier to figure out what's going on here. Try using some of the tricks I used above - dropping some modifiers out of the sentence, replacing parallel elements with letters such as A and B, that sort of thing.

This article might help you learn how to do that:
https://www.beatthegmat.com/mba/2009/11/ ... sc-problem
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