一道prep的比较题！请求高人指点！

cynthia627 · 发表于 2009-12-4 20:16:20

187. (32525-!-item-!-188;#058&007080) (GWD-1-Q32)

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

A. have to know a great deal more than now about the social and economic

B. have to know a great deal more than they do now about the social and economical

C. would have to know a great deal more than they do now about the social and economical

D. would have to know a great deal more than they do now about the social and economic

E. would have to know a great deal more than now about the social and economic

OMA：D

这道题我做对肯定没有问题。但是，今天从新看的时候，发现一个问题，than后面的do对应的是哪个词？would？ have to？还是know呢？请教高人！！！

cynthia627 · 发表于 2009-12-5 22:49:54

其实我也觉得是那样的。只是不很肯定~ 看来应该没错了！谢谢众位~~~

TheAssembly · 发表于 2009-12-5 22:42:54

支持2楼
另外我觉得根据句意，比较的前面部分是虚拟语气，后面的是陈述语气

cynthia627 · 发表于 2009-12-5 22:01:06

顶一小下~ 各位，帮帮忙啊！

cynthia627 · 发表于 2009-12-5 15:34:48

没辙，还是得顶……各位高人们，帮我回答下吧！万分感激！！

九天仙女 · 发表于 2009-12-5 08:26:40

我是用排除法做的，首先than 后面肯定不能加now嘛，now和前面的不能成对比啊。其次，最后一个词不能用economical（节约的），不合理。所以就选出来了

cynthia627 · 发表于 2009-12-5 05:11:04

自己顶一小下！

cynthia627 · 发表于 2009-12-4 20:52:45

不知道我想的是不是对的，more than这种比较结构，无论前面的动词时什么时态than后面的动词总是用do来代表。我觉得这里的do 指代的应该是would have to know不知道我想的对不对？

-- by 会员 saiko13 (2009/12/4 20:31:22)

这个我觉得好像不对哦……哪位高人指点一下捏？

xfyyds · 发表于 2009-12-4 20:38:54

我觉得指代 know more than now they know 把know 变成do了

saiko13 · 发表于 2009-12-4 20:31:22

不知道我想的是不是对的，more than这种比较结构，无论前面的动词时什么时态than后面的动词总是用do来代表。我觉得这里的do 指代的应该是would have to know不知道我想的对不对？

一道prep的比较题！请求高人指点！

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