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Archeologists speculated for decades about why the Anasazi

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Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 22 Sep 2017, 06:37
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Archeologists speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been at the peak of its evolution.

a. speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been
b. speculate for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appeared
c. speculate for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared to have been
d. have speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared
e. have speculated for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appears to have been
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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 22 Sep 2017, 07:42
fmik7894 wrote:
Archeologists speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been at the peak of its evolution.

a. speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been
b. speculate for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appeared
c. speculate for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared to have been
d. have speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared
e. have speculated for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appears to have been


"speculated for decades": "for" here prefers perfect tense. Hence eliminate A, B, C/

"had moved" agrees with "by the time". The adverb here is "at the time", so "had moved" is incorrect. "moved" is prefered.

Also, "appear at the peak of" makes the sentence awkward. "appeares to have been" correctly refers to the past. E is the correct answer.
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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 22 Sep 2017, 10:29
broall wrote:
fmik7894 wrote:
Archeologists speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been at the peak of its evolution.

a. speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been
b. speculate for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appeared
c. speculate for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared to have been
d. have speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared
e. have speculated for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appears to have been


"speculated for decades": "for" here prefers perfect tense. Hence eliminate A, B, C/

"had moved" agrees with "by the time". The adverb here is "at the time", so "had moved" is incorrect. "moved" is prefered.

Also, "appear at the peak of" makes the sentence awkward. "appeares to have been" correctly refers to the past. E is the correct answer.



Hey Broall,

I eliminated answer choices with "had moved" because there is no "past of the past" and past event to refer to.
Both the following events:
1. Anasazi moved from CC to somewhere else
2. Their culture was at the peak of evolution

happened at the same time. Hence, we do not need past participle.

However, IMO "have been" must be used only when the effects of the event still persists today. Anasazi culture was at its peak in the past. Hence, simple past would have sufficed here.

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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 22 Sep 2017, 13:09
broall wrote:
fmik7894 wrote:
Archeologists speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been at the peak of its evolution.

a. speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appears to have been
b. speculate for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appeared
c. speculate for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared to have been
d. have speculated for decades about why the Anasazi had moved from Chaco Canyon to an unknown location at the time when their culture appeared
e. have speculated for decades about why the Anasazi moved from Chaco Canyon to an unknown location at the time when their culture appears to have been


"speculated for decades": "for" here prefers perfect tense. Hence eliminate A, B, C/

"had moved" agrees with "by the time". The adverb here is "at the time", so "had moved" is incorrect. "moved" is prefered.

Also, "appear at the peak of" makes the sentence awkward. "appeares to have been" correctly refers to the past. E is the correct answer.


Hi I have doubt regarding the expression appears to have been
.
The sentence is in the past tense but we are using appears to have been .
Please clarify in detail .
Regards ,
Arvind
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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 22 Sep 2017, 21:40
Please clarify the usage of "have been".

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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 26 Sep 2017, 06:30
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fmik7894 arvind910619

I am no expert, but let me add my two cents.

We definitely need have speculated (present perfect) since the archaeologists had speculated in past
and are still speculating. It is not a point of time event (speculated, ie simple past tense) that happened in past.

Also appears (simple present - suggesting a fact) to have been (present perfect) makes sense since the effect is still continuing
as suggested by - have been .

Let me know if these helps!
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Re: Archeologists speculated for decades about why the Anasazi [#permalink]

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New post 28 Sep 2017, 16:07
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adkikani, you're on the right track. The sentence is saying that it currently appears to us that the Anasazi culture was at its peak at the time of the move. So it appears (now) to have been (then) at its peak.
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Re: Archeologists speculated for decades about why the Anasazi   [#permalink] 28 Sep 2017, 16:07
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