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Basic grammar question - Present perfect

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Intern
Joined: 10 Jan 2018
Posts: 7
Basic grammar question - Present perfect  [#permalink]

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03 Apr 2018, 09:53
Hello Guys, newbie here.

I came across this question while practicing Manhattan SC.

Correct this sentence
"It is possible that the earthquake may have been casual to the building's collapse."
"it is possible that the earthquake have caused to the building's collapse"

But my question is why this sentence use

"the earthquake have caused"

"the earthquake has caused"
Manager
Joined: 17 May 2015
Posts: 249
Re: Basic grammar question - Present perfect  [#permalink]

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05 Apr 2018, 01:23
AtomChyp wrote:
Hello Guys, newbie here.

I came across this question while practicing Manhattan SC.

Correct this sentence
"It is possible that the earthquake may have been casual to the building's collapse."
"it is possible that the earthquake have caused to the building's collapse"

But my question is why this sentence use

"the earthquake have caused"

"the earthquake has caused"

AtomChyp,

it is possible that the earthquake have caused the building's collapse

Use of 'have' in the above sentence is correct. It is in the subjunctive mood.
Please go through the following article:

https://magoosh.com/gmat/2012/gmat-gram ... ive-tense/

Hope this helps.

Thanks.
Director
Joined: 30 Jan 2016
Posts: 932
Location: United States (MA)
Re: Basic grammar question - Present perfect  [#permalink]

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08 Apr 2018, 08:32
Hi @AtomChip,

Weolcome to GMATclub.

Subjunctive mood - Necessity:

It is necessary that these questions be answered at once.

It is necessary that he answer these questions at once.

You wouln't say:

It is necessary that these question are answered at once.

It is necessary that he answers these questions at once.

6 Forms of the Subjunctive Mood

1. Counterfactual
In this subjunctive construction, the writer expresses a notion contrary to fact, such as “If I were you, I’d return it to the store.”

2. Imperative
In this class of the subjunctive mood, commands and demands are expressed: “I demanded that she walk away.”

3. Necessity
This subjunctive form refers to requirement: “It is necessary that she fill out the form first.”

4. Proposition
This category applies to proposals and suggestions: “We proposed that they reconsider the offer.”

5. Supposition
In this form, the writer expresses a possibility: “If I were to accept the position, I’d have to relocate.”

6. Wish
This type of subjunctive form deals with expressions of desire: “I wish that I were able to go back and do it over again.”

The subjunctive case also survives in such idiomatic phrases as “as it were,” “be that as it may,” “be they [one thing or another],” and “would that it were.”

Hope this helps!
_________________

Non progredi est regredi

Manhattan Prep Instructor
Joined: 04 Dec 2015
Posts: 689
GMAT 1: 790 Q51 V49
GRE 1: Q170 V170
Re: Basic grammar question - Present perfect  [#permalink]

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09 Apr 2018, 07:50
AtomChyp wrote:
Hello Guys, newbie here.

I came across this question while practicing Manhattan SC.

Correct this sentence
"It is possible that the earthquake may have been casual to the building's collapse."
"it is possible that the earthquake have caused to the building's collapse"

But my question is why this sentence use

"the earthquake have caused"

"the earthquake has caused"

I think you either copied the right answer incorrectly, or you have a copy of the book with an error. The right answer should read something like "The earthquake may have caused the building's collapse." Can you post a screenshot or a photo of the exact problem you're doing so I can look into it?

"The earthquake have caused ________" is always incorrect, as you suspected. The problem is with subject/verb agreement.

However, "The earthquake may have caused _______" is correct, because of what the other posters mentioned about the subjunctive.

Also, the phrase "may have caused to the building's collapse" is incorrect - you don't need to use 'to' with that phrase.
_________________

Chelsey Cooley | Manhattan Prep | Seattle and Online

My latest GMAT blog posts | Suggestions for blog articles are always welcome!

Director
Joined: 30 Jan 2016
Posts: 932
Location: United States (MA)
Basic grammar question - Present perfect  [#permalink]

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09 Apr 2018, 08:07
Chapter 2 problem set:

.
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ch2a.png [ 10.37 KiB | Viewed 241 times ]

_________________

Non progredi est regredi

Basic grammar question - Present perfect   [#permalink] 09 Apr 2018, 08:07
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