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Old 2007 November 18th, 03:12 PM   #1 (permalink)
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To develop more accurate population forecasts

Can you pl explain the answer for this question

To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
  • have to know a great deal more than now about the social and economic
  • have to know a great deal more than they do now about the social and economical
  • would have to know a great deal more than they do now about the social and economical
  • would have to know a great deal more than they do now about the social and economic
  • would have to know a great deal more than now about the social and economical
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Old 2007 November 18th, 05:12 PM   #2 (permalink)
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Should be D. What is the OA?
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Old 2007 November 18th, 05:36 PM   #3 (permalink)
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i go with D..
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Old 2007 November 18th, 05:41 PM   #4 (permalink)
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To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
  • have to know a great deal more than now about the social and economic
  • have to know a great deal more than they do now about the social and economical
  • would have to know a great deal more than they do now about the social and economical
  • would have to know a great deal more than they do now about the social and economic
  • would have to know a great deal more than now about the social and economical
There are three errors in the incorrect sentences:
1. The sentence should use future perfect tense since the two events are occuring in sequence in future. Sentence should use "would have" and not "have". Options A, B are ruled out; options C, D, E satisfy.
2. Word economic and economical are not same although both of them are adjectives. This is altered intent case. Options B, C, E are ruled out; options A, D satisfy.
3. Faulty comparison of time and knowledge. "to know" is compared to "now", while it should have been "they know now" to "what they would know". Options A, E are ruled out; options B, C, D satisfy.

So only option D satify.
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Old 2007 November 18th, 06:42 PM   #5 (permalink)
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I don't think " would have" should be preferred over "have" in this sentence. Normally "would have" should be used to refer future prospect of any past event. I think present tense is enough to retain the meaning of the sentence.
Only A & D use word "economic", making them viable options while others using word "economical" that changes meaning of the sentence.
A compares knowledge to time (now) therefore faulty.
Only option left is D.
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Old 2007 November 18th, 07:33 PM   #6 (permalink)
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Quote:
Originally Posted by ontheway View Post
I don't think " would have" should be preferred over "have" in this sentence. Normally "would have" should be used to refer future prospect of any past event. I think present tense is enough to retain the meaning of the sentence.
I think you are right. I drop my argument 1.
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Old 2007 November 18th, 07:37 PM   #7 (permalink)
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I pick D too
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Old 2007 November 18th, 11:09 PM   #8 (permalink)
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D for me as well....
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Old 2008 August 30th, 11:06 PM   #9 (permalink)
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IMO A

As would is used to describe future event of past event and here both the events are in future.
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Old 2008 August 30th, 11:13 PM   #10 (permalink)
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i think usage of would is warranted as it is a conditional statement.
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