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The professor assumed that Michelle probably

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The professor assumed that Michelle probably [#permalink]

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from the gmatclub ultimate grammar book
test 2

41. The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

i go for A but it is wrong.
why?

thanks,
[Reveal] Spoiler: OA

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Re: The professor assumed that Michelle probably [#permalink]

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New post 23 Apr 2014, 03:46
"have stayed" would be wrong
the correct sentence would have been :The professor assumed that Michelle probably had stayed up late last night
also out of given options C seems oki

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Re: The professor assumed that Michelle probably [#permalink]

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New post 23 Apr 2014, 09:21
41. The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up (We need past tense to match with "assumed". Eliminated)
b) for a fact Michelle was staying up too (We need past tense to match with "assumed". Eliminated)
c) Michelle must have stayed up (Past tense. Hold!)
d) Michelle probably must had stayed up ("must had" sounds awkward)
e) it was possible of Michelle staying up (We need past tense to match with "assumed". Eliminated)

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Re: The professor assumed that Michelle probably [#permalink]

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New post 31 May 2014, 03:46
[quote="gregfromnancy"]from the gmatclub ultimate grammar book
test 2

41. The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

A
have done is not used for past action. there are many uses of have done. look at the grammar books for this point. A is wrong
B, "fact that +clause" . this is grammatical basic error
D , there is no "must had done" in english
E, there is no this pattern in English.
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The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 15 Jan 2017, 06:10
The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

This question is from Gmat Club Grammar Book. Practice Test 2 (41). The OA is C. My confusion is should not it be the had stayed up instead of have stayed up?

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 15 Jan 2017, 06:38
The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

This question is from Gmat Club Grammar Book. Practice Test 2 (41). The OA is C. My confusion is should not it be the had stayed up instead of have stayed up?

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 15 Jan 2017, 07:40
The Past Perfect expresses the idea that something occurred before another action in the past. It can also show that something happened before a specific time in the past.

For detail visit the following Link - http://www.englishpage.com/verbpage/pastperfect.html

Whereas -

Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important. You CANNOT use the Present Perfect with specific time expressions.

For detail visit the following Link - http://www.englishpage.com/verbpage/presentperfect.html

Thus, Have stayed up is good here...

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 15 Jan 2017, 09:45
Sorry, I am still not very much clear on this. Both professor assumed and she fell asleep in class are in past. Michelle must have stayed up last night describes an action which occurred before the past actions professor assumed and she fell asleep in class. So, should not it be past perfect instead of present perfect?

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The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 02:37
saswata4s wrote:
The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

This question is from Gmat Club Grammar Book. Practice Test 2 (41). The OA is C. My confusion is should not it be the had stayed up instead of have stayed up?


This question focuses on the probability of something happened.

"must had done sth" is wrong gramatically. Hence D is out.

Between A and C, the probability in C is higher. Also, the professor has a strong evidence that "Michelle fell asleep in class", so the correct choice is C. In A, professor made a guess but not sure about it.
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Last edited by broall on 17 Jan 2017, 05:02, edited 1 time in total.

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The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 03:08
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C is the most appropriate answer here. However Michelle " probably had stayed up" would have been more appropriate as the sentence talks of 2 events and one is before the other . The use of past perfect tense makes more sense than present perfect tense. I.e Michelle fell asleep (later event) after she had stayed up (earlier event) .
Only answer option D uses past perfect tense. However D is wrong as "probably must had"is redundant. Probably indicates a probability of an event happening while "must" indicates that that event is certain. Usage of both probably and must for the same event is redundant. Also must cannot precede had as it is idiomatically incorrect.
So the next best answer here is C. Another pointer here is since the time frame is not mentioned, present perfect seems a safe option.

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 03:17
Usage of Present Perfect Tense or Past Perfect tense. Two events are specified in the question where one is before the other and hence Past Perfect tense seems appropriate. However there is no answer option with the past perfect tense (without errors) . Also the time frame is not mentioned in the question which makes the use of present perfect tense also appropriate. Kindly advise !!

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 06:35
saswata4s wrote:
The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

This question is from Gmat Club Grammar Book. Practice Test 2 (41). The OA is C. My confusion is should not it be the had stayed up instead of have stayed up?


I agree with you that past perfect would be more appropriate here. However, the only option is D, which is redundant (probably must had...) Between A and C, I choose C, as it is more precise.

Remember: We are searching for the most appropriate answer (although it might sometimes seem awkward as well)!

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 09:15
LarryM wrote:
Usage of Present Perfect Tense or Past Perfect tense. Two events are specified in the question where one is before the other and hence Past Perfect tense seems appropriate. However there is no answer option with the past perfect tense (without errors) . Also the time frame is not mentioned in the question which makes the use of present perfect tense also appropriate. Kindly advise !!


Both your posts are very clear and logical. I agree with your points.

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 09:24
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- must had stayed up-' had' is an incorrect verb after the modal "must'. "must have stayed up" is ok. Or you may drop -must- from choice D and it will be ok

D. The professor assumed that Michelle probably had stayed up late last night since she fell asleep in class.
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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 09:27
LarryM wrote:
C is the most appropriate answer here. However Michelle " probably had stayed up" would have been more appropriate as the sentence talks of 2 events and one is before the other . The use of past perfect tense makes more sense than present perfect tense. I.e Michelle fell asleep (later event) after she had stayed up (earlier event) .
Only answer option D uses past perfect tense. However D is wrong as "probably must had"is redundant. Probably indicates a probability of an event happening while "must" indicates that that event is certain. Usage of both probably and must for the same event is redundant. Also must cannot precede had as it is idiomatically incorrect.
So the next best answer here is C. Another pointer here is since the time frame is not mentioned, present perfect seems a safe option.



Thanks for the clarification.

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 11:52
saswata4s wrote:
LarryM wrote:
C is the most appropriate answer here. However Michelle " probably had stayed up" would have been more appropriate as the sentence talks of 2 events and one is before the other . The use of past perfect tense makes more sense than present perfect tense. I.e Michelle fell asleep (later event) after she had stayed up (earlier event) .
Only answer option D uses past perfect tense. However D is wrong as "probably must had"is redundant. Probably indicates a probability of an event happening while "must" indicates that that event is certain. Usage of both probably and must for the same event is redundant. Also must cannot precede had as it is idiomatically incorrect.
So the next best answer here is C. Another pointer here is since the time frame is not mentioned, present perfect seems a safe option.



Thanks for the clarification.


You are welcome !! :)

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 15:09
sayantanc2k wrote:
LarryM wrote:
Usage of Present Perfect Tense or Past Perfect tense. Two events are specified in the question where one is before the other and hence Past Perfect tense seems appropriate. However there is no answer option with the past perfect tense (without errors) . Also the time frame is not mentioned in the question which makes the use of present perfect tense also appropriate. Kindly advise !!


Both your posts are very clear and logical. I agree with your points.


Hi sayantanc2k,

I rejected the choice C as it changes the meaning of the original sentence. Original choice shows the possibility while choice C shows the certainty. To me, no choice seemed to be correct. so, I end up selecting A; however, I knew that there should be past perfect instead of present perfect in choice A.

Please advise how to select one choice between two when both seems to be incorrect.

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 17 Jan 2017, 15:22
I rejected the choice C as it changes the meaning of the original sentence. Original choice shows the possibility while choice C shows the certainty. To me, no choice seemed to be correct. so, I end up selecting A; however, I knew that there should be past perfect instead of present perfect in choice A.

Please advise how to select one choice between two when both seems to be incorrect.

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 18 Jan 2017, 03:48
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AR15J wrote:
I rejected the choice C as it changes the meaning of the original sentence. Original choice shows the possibility while choice C shows the certainty. To me, no choice seemed to be correct. so, I end up selecting A; however, I knew that there should be past perfect instead of present perfect in choice A.

Please advise how to select one choice between two when both seems to be incorrect.


A is wrong in this case. The sentence "Michelle probably have stayed up" is idiomatically wrong. Meaning wise the subject of the sentence after the word "that" would be Michelle (singular) while the verb (have) is plural. There would be a subject verb disagreement in option A.

Option C is correct as we can use "have" after the modal verb "must". Try thinking of an example to clear this concept ." He must have slept off"is correct while "He probably have slept off" is wrong.
If "probably" is to be used in the sentence we can use "He probably has slept off."

Hope this clears your doubt .

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Re: The professor assumed that Michelle probably have stayed up late last [#permalink]

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New post 18 Jan 2017, 07:43
saswata4s wrote:
The professor assumed that Michelle probably have stayed up late last night since she fell asleep in class.
a) Michelle probably have stayed up
b) for a fact Michelle was staying up too
c) Michelle must have stayed up
d) Michelle probably must had stayed up
e) it was possible of Michelle staying up

This question is from Gmat Club Grammar Book. Practice Test 2 (41). The OA is C. My confusion is should not it be the had stayed up instead of have stayed up?



the only difference btw option a and c is probably (which is a possibility ) and must (certainty) . when in assumption do we use probably or must after" that " ? IMO A as it is an assumption.
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Re: The professor assumed that Michelle probably have stayed up late last   [#permalink] 18 Jan 2017, 07:43

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