GWD-1-Q32 题外话

niaoniao36

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。

annajulira

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]

zuozuox

有一个疑问，将来时为什么用would？不应该用will吗？

lijiahui0422

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