Last visit was: 29 Apr 2026, 14:29 It is currently 29 Apr 2026, 14:29
Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Close
Request Expert Reply
Confirm Cancel
User avatar
nave
Joined: 08 Dec 2012
Last visit: 15 May 2016
Posts: 53
Own Kudos:
1,537
 [36]
Given Kudos: 31
Location: United Kingdom
WE:Engineering (Consulting)
Posts: 53
Kudos: 1,537
 [36]
7
Kudos
Add Kudos
29
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
Zarrolou
Joined: 02 Sep 2012
Last visit: 11 Dec 2013
Posts: 842
Own Kudos:
5,188
 [11]
Given Kudos: 219
Status:Far, far away!
Location: Italy
Concentration: Finance, Entrepreneurship
GPA: 3.8
Posts: 842
Kudos: 5,188
 [11]
9
Kudos
Add Kudos
2
Bookmarks
Bookmark this Post
General Discussion
User avatar
vishnuns39620
Joined: 01 Dec 2012
Last visit: 30 Mar 2021
Posts: 76
Own Kudos:
140
 [3]
Given Kudos: 68
Status:Admitted to U of M Ross
Location: United States (TX)
Concentration: Strategy, Entrepreneurship
GMAT 1: 750 Q50 V42
GPA: 2.9
WE:Consulting (Consulting)
3
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
vs007
Joined: 23 Jan 2012
Last visit: 25 Oct 2015
Posts: 56
Own Kudos:
27
 [1]
Given Kudos: 15
Location: United States
Concentration: Strategy, Marketing
Schools: ISB '15 (A)
GMAT 1: 700 Q47 V39
WE:General Management (Hospitality and Tourism)
Schools: ISB '15 (A)
GMAT 1: 700 Q47 V39
Posts: 56
Kudos: 27
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
I think it's "A". It should be in simple present tense.
User avatar
honchos
Joined: 17 Apr 2013
Last visit: 30 Aug 2021
Posts: 358
Own Kudos:
Given Kudos: 298
Status:Verbal Forum Moderator
Location: India
GMAT 1: 710 Q50 V36
GMAT 2: 750 Q51 V41
GMAT 3: 790 Q51 V49
GPA: 3.3
GMAT 3: 790 Q51 V49
Posts: 358
Kudos: 2,490
Kudos
Add Kudos
Bookmarks
Bookmark this Post
C and D are out because working is not a verb. The correct verb form is work(Plural).

Among A B and C, such as is the best to compare example and is better than 'like' and 'for example'.

Participial Phrase is correctly used with a comma, modifying the preceding clause. A is direct, sleek idiomatically correct and therefore the best answer choice.
avatar
vietmoi999
Joined: 08 Apr 2013
Last visit: 07 Dec 2014
Posts: 96
Own Kudos:
Given Kudos: 27
Posts: 96
Kudos: 71
Kudos
Add Kudos
Bookmarks
Bookmark this Post
what is the difference between "by doing " and "comma doing" when they follow the main clause, pls, explain
User avatar
honchos
Joined: 17 Apr 2013
Last visit: 30 Aug 2021
Posts: 358
Own Kudos:
Given Kudos: 298
Status:Verbal Forum Moderator
Location: India
GMAT 1: 710 Q50 V36
GMAT 2: 750 Q51 V41
GMAT 3: 790 Q51 V49
GPA: 3.3
GMAT 3: 790 Q51 V49
Posts: 358
Kudos: 2,490
Kudos
Add Kudos
Bookmarks
Bookmark this Post
vietmoi999
what is the difference between "by doing " and "comma doing" when they follow the main clause, pls, explain

Verb+ing(example: being, having, using) modifier with comma modifies preceding clause and without comma modifies preceding noun.
avatar
bjh
Joined: 30 Oct 2016
Last visit: 27 Nov 2016
Posts: 9
Own Kudos:
Given Kudos: 107
Posts: 9
Kudos: 1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Zarrolou
Unlike amateur clammers, who usually dig clams by hand during the summer, professional clammers work year-round, using all-weather instruments such as the hydraulic dredge or a 20-foot-long implement known as a bull rake

First split: work VS working. "Work" is a verb, "working" is a modifier. Consider C and D:

C. working year-round and using all-weather instruments such as a hydraulic dredge or a 20-foot-long implement known as a bull rake
This sentence has no verb. Cannot be right
D. working year-round use all-weather instruments like hydraulic dredges or 20-foot-long implements known as a bull rake
This sentence has a structure issue. The overall sentence is not clear : "Unlike amateur clammers, who usually dig during the summer professional clammers use all-weather instruments ". Moreover "like" should be replaced by "such as", as we want to give examples

We are left with A B and E:

A. work year-round, using all-weather instruments such as the hydraulic dredge or a 20-foot-long implement known as a bull rake
B. work year-round by using all-weather instruments like hydraulic dredge or 20-foot-long implements known as a bull rake
E. work year-round using all-weather instruments, for example, a hydraulic dredge or 20-foot-long implements known as a bull rake

All those use work correctly. But they differ in the usage of "using". What is the sentence trying to express?
The structure should be "they work, HOW they work", the construct COMMA + ING expresses this idea correctly.
In E "using" is used without the comma and modifes the preceding noun, does not express how they work.

BTW, there are also other reasons to pick A over B and E (implement VS implements for example or such as VS like)
in
but in E, there is no noun preceed "using( without comma)". what does it modify in this case?
User avatar
mbaapplicant2019
Joined: 25 Jul 2017
Last visit: 14 Mar 2020
Posts: 46
Own Kudos:
Given Kudos: 166
Posts: 46
Kudos: 50
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi all,

I am not clear about the difference between "comma + Ving" and "by Ving". Why, in this case, "comma + Ving" is better than "by Ving". How does "by Ving" distort the meaning of this sentence.

Anyone can help. Thanks.
User avatar
aim730
Joined: 20 Apr 2010
Last visit: 30 Sep 2023
Posts: 166
Own Kudos:
Given Kudos: 66
Concentration: Tuck,Cornell,Duke
WE 1: 4.6 years Exp IT prof
Products:
GMAT 3: 710 Q49 V38
Posts: 166
Kudos: 72
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi thingocanhnguyen

work year-round using all-weather instruments - using without comma modifies the previous noun which is year-round
work year-round, using all-weather instruments - where as (,+ Ving ) modifies the previous clause which is how the work was done it was done using all the weather instruments.
User avatar
mbaapplicant2019
Joined: 25 Jul 2017
Last visit: 14 Mar 2020
Posts: 46
Own Kudos:
Given Kudos: 166
Posts: 46
Kudos: 50
Kudos
Add Kudos
Bookmarks
Bookmark this Post
aim730
Hi thingocanhnguyen

work year-round using all-weather instruments - using without comma modifies the previous noun which is year-round
work year-round, using all-weather instruments - where as (,+ Ving ) modifies the previous clause which is how the work was done it was done using all the weather instruments.

Hi aim730,

Thanks for your explanation. However, my question is: there is any difference in meaning or grammatically structure between "work year-round by using all-weather instruments..." and "working year-round, using all-weather instruments..."

Thanks.
User avatar
egmat
User avatar
e-GMAT Representative
Joined: 02 Nov 2011
Last visit: 27 Apr 2026
Posts: 5,632
Own Kudos:
33,438
 [2]
Given Kudos: 707
GMAT Date: 08-19-2020
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 5,632
Kudos: 33,438
 [2]
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
thingocanhnguyen
Hi all,

I am not clear about the difference between "comma + Ving" and "by Ving". Why, in this case, "comma + Ving" is better than "by Ving". How does "by Ving" distort the meaning of this sentence.

Anyone can help. Thanks.



Hello thingocanhnguyen,

I will be glad to help you out with this one. :-)

The comma + verb-ing modifier placed after a clause modifies the preceding action in the preceding clause. In modifying the preceding action, the comma _ verb-ing modifier performs one of the two functions:

1. It presents the HOW aspect of the modified clause. For example: Paul dug the hole, using a spade.

How did Paul dig the hole? By using a spade.


2. It presents the RESULT of the modified action. For example: Paul invested wisely in the stock market, earning huge profits.

The sentence says that because Paul invested wisely in the stock market, he earned huge profits as a result.


Now let's talk about the official sentence at hand. In this sentence, the context makes it very clear that comma + verb-ing modifier using... presents the HOW aspect of the modified action work.

How do the professional clammers work year-round? They do so by using all-weather instrument.

So yes, we can use both the expressions - comma + using... and by using..., to present the HOW aspect of the action work.

However, option B suffers from other flaws. It is not incorrect for the usage of by using....


To learn more about the correct usage of comma + verb-ing and the verb-ing modifiers (not preceded by a comma), please click on the following link:
https://e-gmat.com/secure/mod/lti/view.php?id=3709

To access the link, you just need to log on to e-gmat.com and register free of cost.



Hope this helps. :-)
Thanks.
Shraddha
avatar
duybachhpvn
Joined: 23 Sep 2014
Last visit: 03 Mar 2022
Posts: 21
Own Kudos:
Given Kudos: 117
Posts: 21
Kudos: 11
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi generis

I would like to ask for option D in this question, if we consider just the part "professional clammers working year-round use all-weather instruments.....". Is this a correct structure?

From my opinion, "working" is modifying clammers and that part can be rewritten as "professional clammers who work year-round use all-weather instruments...". Is this an acceptable grammar?

Thanks
User avatar
generis
User avatar
Senior SC Moderator
Joined: 22 May 2016
Last visit: 18 Jun 2022
Posts: 5,258
Own Kudos:
37,739
 [1]
Given Kudos: 9,464
Expert
Expert reply
Posts: 5,258
Kudos: 37,739
 [1]
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Quote:
A) Unlike amateur clammers, who usually dig clams by hand during the summer, professional clammers work year-round, using all-weather instruments . . .

D) Unlike amateur clammers, who usually dig clams by hand during the summer, professional clammers working year-round use all-weather instruments . . .
duybachhpvn
Hi generis

I would like to ask for option D in this question, if we consider just the part "professional clammers working year-round use all-weather instruments.....". Is this a correct structure?

From my opinion, "working" is modifying clammers and that part can be rewritten as "professional clammers who work year-round use all-weather instruments...". Is this an acceptable grammar?

Thanks
duybachhpvn , as usual, you ask an interesting question.

Yes, if we isolate the part you describe, you are correct that working = who work
Jargon: what you describe is a reduced relative clause.*

I see two issues with (D)'s verb.
(1) AS IS: there is probably a parallelism problem. Unlike X, Y.
What makes X (amateur clammers) and Y (professional clammers) different? Answer A:
Amateurs . . .dig by hand during the summer.
Professionals work year-round.

Compare A to D:
Amateurs . . . dig by hand during the summer
Professionals working year-round use (?)


(2) Meaning problems.
We have these phrases:
. . . professional clammers working year-round use ABC, or
hypothetically. . . professional clammers [who work] year-round use ABC

The description of professional clammers is not as clear as the description of them in (A).
Oddly enough, that haziness comes from the explicit or implied relative pronoun who
that modifies professional clammers.

If option D is inserted, the sentence implies that not all professional clammers work year-round,
but that those professional clammers who do work year-round use certain kinds of tools to do so.

I hope that helps.

*As you note, we can "reduce" professional clammers who work:
-- remove the who
-- change the verb to the present participle (change work to working)
-- and place the participle "working" in front of the modified noun clammers.
We can reverse the process, too; we can change "clammers working" to "clammers who work."
avatar
rnn
Joined: 27 Nov 2015
Last visit: 11 Aug 2025
Posts: 86
Own Kudos:
Given Kudos: 325
Posts: 86
Kudos: 44
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat
thingocanhnguyen
Hi all,

I am not clear about the difference between "comma + Ving" and "by Ving". Why, in this case, "comma + Ving" is better than "by Ving". How does "by Ving" distort the meaning of this sentence.

Anyone can help. Thanks.



Hello thingocanhnguyen,

I will be glad to help you out with this one. :-)

The comma + verb-ing modifier placed after a clause modifies the preceding action in the preceding clause. In modifying the preceding action, the comma _ verb-ing modifier performs one of the two functions:

1. It presents the HOW aspect of the modified clause. For example: Paul dug the hole, using a spade.

How did Paul dig the hole? By using a spade.


2. It presents the RESULT of the modified action. For example: Paul invested wisely in the stock market, earning huge profits.

The sentence says that because Paul invested wisely in the stock market, he earned huge profits as a result.


Now let's talk about the official sentence at hand. In this sentence, the context makes it very clear that comma + verb-ing modifier using... presents the HOW aspect of the modified action work.

How do the professional clammers work year-round? They do so by using all-weather instrument.

So yes, we can use both the expressions - comma + using... and by using..., to present the HOW aspect of the action work.

However, option B suffers from other flaws. It is not incorrect for the usage of by using....


To learn more about the correct usage of comma + verb-ing and the verb-ing modifiers (not preceded by a comma), please click on the following link:
https://e-gmat.com/secure/mod/lti/view.php?id=3709

To access the link, you just need to log on to e-gmat.com and register free of cost.



Hope this helps. :-)
Thanks.
Shraddha

Hi

Why is "by using" in option B incorrect? COuld you kindly share other examples of the same please? Thank you
User avatar
sssanskaar
Joined: 09 Aug 2020
Last visit: 09 Oct 2022
Posts: 209
Own Kudos:
Given Kudos: 163
Location: India
Schools: IIMA PGPX'23
GMAT 1: 710 Q48 V39 (Online)
Schools: IIMA PGPX'23
GMAT 1: 710 Q48 V39 (Online)
Posts: 209
Kudos: 133
Kudos
Add Kudos
Bookmarks
Bookmark this Post
egmat
thingocanhnguyen
Hi all,

I am not clear about the difference between "comma + Ving" and "by Ving". Why, in this case, "comma + Ving" is better than "by Ving". How does "by Ving" distort the meaning of this sentence.

Anyone can help. Thanks.



Hello thingocanhnguyen,

I will be glad to help you out with this one. :-)

The comma + verb-ing modifier placed after a clause modifies the preceding action in the preceding clause. In modifying the preceding action, the comma _ verb-ing modifier performs one of the two functions:

1. It presents the HOW aspect of the modified clause. For example: Paul dug the hole, using a spade.

How did Paul dig the hole? By using a spade.


2. It presents the RESULT of the modified action. For example: Paul invested wisely in the stock market, earning huge profits.

The sentence says that because Paul invested wisely in the stock market, he earned huge profits as a result.


Now let's talk about the official sentence at hand. In this sentence, the context makes it very clear that comma + verb-ing modifier using... presents the HOW aspect of the modified action work.

How do the professional clammers work year-round? They do so by using all-weather instrument.

So yes, we can use both the expressions - comma + using... and by using..., to present the HOW aspect of the action work.

However, option B suffers from other flaws. It is not incorrect for the usage of by using....


To learn more about the correct usage of comma + verb-ing and the verb-ing modifiers (not preceded by a comma), please click on the following link:
https://e-gmat.com/secure/mod/lti/view.php?id=3709

To access the link, you just need to log on to e-gmat.com and register free of cost.



Hope this helps. :-)
Thanks.
Shraddha

Hi egmat Shraddha,

In your example, "Paul dug a hole, using a spade" - what if there were no comma before "using" ?

Paul dug a hole using a spade.

In this case, do we infer that a hole was using a spade? (because -ing verb is before the noun 'hole')

Please clear the confusion.
avatar
ah1028
Joined: 17 Sep 2020
Last visit: 30 Mar 2022
Posts: 7
Own Kudos:
Given Kudos: 23
Location: United States
GMAT 1: 680 Q47 V35
GPA: 3.3
GMAT 1: 680 Q47 V35
Posts: 7
Kudos: 2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Hi my question on this one is on option E. I understand why B, C , and D are all incorrect.

E - [professional clammers] "work year-round using all-weather instruments, for example, a hydraulic dredge or 20-foot-long implements known as bull rakes"

Is option E incorrect because the way "for example" is used in the sentence is grammatically incorrect? "For example" means by way of illustration / for instance and is used to introduce and emphasize something that shows that something is true - meaning you wouldn't use it to introduce a list? So substituting "such as" for "for example" could make E a grammatically correct option?
User avatar
AbhishekDhanraJ72
Joined: 15 Apr 2020
Last visit: 02 Feb 2025
Posts: 166
Own Kudos:
Given Kudos: 2,217
GMAT 1: 620 Q45 V30
Products:
GMAT 1: 620 Q45 V30
Posts: 166
Kudos: 23
Kudos
Add Kudos
Bookmarks
Bookmark this Post
What is wrong with E? How are we supposed to know we can't use bull rakes as singular. Or even implements as singular word.

Posted from my mobile device
User avatar
ExpertsGlobal5
User avatar
Experts' Global Representative
Joined: 10 Jul 2017
Last visit: 29 Apr 2026
Posts: 6,297
Own Kudos:
Given Kudos: 45
Location: India
GMAT Date: 11-01-2019
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 6,297
Kudos: 6,238
Kudos
Add Kudos
Bookmarks
Bookmark this Post
AbhishekDhanraJ72
What is wrong with E? How are we supposed to know we can't use bull rakes as singular. Or even implements as singular word.

Posted from my mobile device

Hello AbhishekDhanraJ72,

We hope this finds you well.

To answer your query, the phrase "the hydraulic dredge or a 20-foot-long implement", used in Option A, is more parallel than "a hydraulic dredge or 20-foot-long implements", used in Option E, as the former has two singular nouns on either side of the conjunction ("or" in this case), while the latter has one singular noun and one plural noun.

We hope this helps.
All the best!
Experts' Global Team
avatar
jim441
Joined: 29 Apr 2022
Last visit: 14 Dec 2023
Posts: 179
Own Kudos:
Given Kudos: 276
Location: India
Concentration: Finance, Marketing
GMAT 1: 690 Q48 V35 (Online)
WE:Engineering (Manufacturing)
GMAT 1: 690 Q48 V35 (Online)
Posts: 179
Kudos: 56
Kudos
Add Kudos
Bookmarks
Bookmark this Post
In option B, what if there was "such as" instead of "like"??
would it be correct?
 1   2   
Moderators:
GMAT Club Verbal Expert
7391 posts
509 posts
363 posts