ChaseDream

标题: GWD-1-Q32 题外话 [打印本页]
作者: niaoniao36    时间: 2009-7-4 14:31
标题: GWD-1-Q32 题外话

To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility. 

  1. have to know a great deal more than now about the social and economic
                
  2. have to know a great deal more than they do now about the social and economical
                
  3. would have to know a great deal more than they do now about the social and economical
                
  4. would have to know a great deal more than they do now about the social and economic
                
  5. would have to know a great deal more than now about the social and economical

D is the correct answer

答案本身没问题，只是题外话想问一下，如果E改成 would have to know a great deal more than now about the social and economic，E是不是也正确。在下对于比较的省略这块语法点还不是很扎实，望NN指点。
作者: annajulira    时间: 2009-7-20 15:09

un-NN

又看了下前人的解答,说得很清楚.

主要看比较的两个动作,一个是将来时,一个是现在,时态不一样,所以不能省的.

所以E错的不光是这个economic


[此贴子已经被作者于2009/7/20 15:14:06编辑过]
作者: zuozuox    时间: 2009-9-7 22:29
有一个疑问，将来时为什么用would？不应该用will吗？
作者: lijiahui0422    时间: 2009-9-7 22:36
这题讨论的帖子老多了，真是一言难尽...楼主搜搜去吧，里面有说关于省略的问题



欢迎光临 ChaseDream (https://forum.chasedream.com/) Powered by Discuz! X3.3