OG13 SC 42

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

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

求指教啊求指教~~~

通过一些排除最后答案选D，但是我没搞懂的是OG的解释写的是：this sentence explains a hypothetical situation and therefore calls for a conditional-or contrary-to-fact-construction
这里有必要用虚拟语气吗？~~~~

lillianess

贴一个关于含蓄条件句的用法说明
含蓄虚拟条件句的七种表现形式

所谓含蓄虚拟条件句即指将条件从句隐藏在上下文一定的短语中的一类条件句，其主要用法及表现形式可归纳如下：
1. 将条件隐含在不定式短语中
I would write to her, but I don’t know her address. 我会给她写信的，就是不知道她的地址。(=If I knew her address, I would write to her. But…)
To have studied harder, you would have passed the examination. 你学习更用功些，你早就考及格了。(=If you had studied harder, you…)
2. 将条件隐含在分词短语中
Born in better times, he would have been a scholar. 如果出生在好时代，他早就成为学者了。(=If he had been born in better times, he would…)
Failing this time, what would you do？ 假若这次失败，那你怎么办？(=If you failed this time, what would…)
Walking alone in the dark, Mary would be terrified. 要一个人单独在黑暗中行走，玛丽会感到十分害怕。(If Mary walked alone in the dark, she…)
3. 将条件隐含在介词短语中
But for your help we couldn’t have succeeded in the experiment. 如果没有你的帮助，我们的实验是不会成功的。(=If it hadn’t been for your help, we…)
In different circumstances, I would have said yes. 在不同的情况下，我就会同意了。(=If circumstances had been different, I would…)
4. 将条件隐含在名词短语中
Any person who had behaved in that way would have been dismissed. 任何人这样做了都会被开除。(=If any person should behave in that way…, he would…)
A few hours earlier, and you would have seen the famous writer. 要是你早来几个小时，你就见到这位著名的作家了。(If you had come a few hours earlier, you…)
5. 将条件隐含在某些连词中
I didn’t know that he was a cheat, or else I wouldn’t have believed him. 我不知道他是个骗子，不然我也不会相信他了。(or else=if I had known he was a cheat))
I’m really very busy, otherwise I would certainly go there with you. 我真的是太忙了，不然我就会同你一道去了。(other wise=if I were not so busy)
6. 将条件隐含在定语从句中
Anyone who had seen that painting might have taken it for a photo. 凡是看过那画的人，都可能把它看成是照片。(=If anyone had seen that painting…)
7. 将条件隐含在一定的上下文中
You might stay here forever. 你可以永远待在这儿。(=If you wanted to, you might…)
Don’t bother to read all these papers. It would take too long. 不要费事看所有这些文件了，那会花太多时间。(=…If you read all these papers, It would take too long

晓嘉听话

waytous 发表于 2013-1-9 13:29
我觉得呢，如果单单拿出来没有would的句子，说有没有错？我觉得没有错。但是你让我比较有would和没有would ...

我也觉得这句话有没有would 都一样。

我看了各位在这里的回答其实更confuse了啊 啊 啊

这个前半句：为了要做出更精确的人口预测 不应该是后面半句 人口统计学家要知道比现在更多的关于生育的经济和社会的决定因素 的最终目的吗

晓嘉听话

ivyxueyue 发表于 2014-5-18 02:00
实在不好意思，这么久的帖子了。但是我最开始就有一个疑问，翻了相关帖子都没找到 有这方面解答。

这道题 ...

这里的would have 不是完成时的have 而是与have to连用的那个have 就是强调一下必要性吧。

kimiwenjie

wqqcs2008 发表于 2013-3-28 13:10
也就是说they do now是对的，而且是最简的形式了吗？谢谢啦~

请问你看的是哪个帖子啊？我一直以为可以省略they do单单用now，因为manhattan说不造成歧义其实是可以省略句子的不是吗？很不明白。。。。

nicole0926

我觉得这句话的提示点是 more than now， 因为所需要知晓的东西是要比现在的状态多的，所以demographers后面要么接将来时要么接虚拟语气，但绝对不能和now在同一个时态，因为know a great deal more还没有实现。

allheartin

waytous 发表于 2013-1-9 13:29
我觉得呢，如果单单拿出来没有would的句子，说有没有错？我觉得没有错。但是你让我比较有would和没有would ...

我现在超级迷信Ron，感觉他一说我就明白了。

ivyxueyue

ivyxueyue 发表于 2014-5-18 02:00
实在不好意思，这么久的帖子了。但是我最开始就有一个疑问，翻了相关帖子都没找到 有这方面解答。

这道题 ...

不用了，我已经知道自己错哪了。为免浪费后面看帖人时间，但不会删，所以来说一下。这个忽略吧。

ivyxueyue

实在不好意思，这么久的帖子了。但是我最开始就有一个疑问，翻了相关帖子都没找到 有这方面解答。

这道题中的 would have done, 在曼哈顿中对应的是对 in the past 的虚拟，即
if-then construction 中的第5种情况。

（5）Case That Never Happened(in the past)
If Past Perfect, Then Conditional Perfect.
If Sophie HAD EATEN pizza yesterday, Then she WOULD HAVE BECOME ill.

这和第四种
（4）Unlikely Case (in the future)
If Sophie ATE ……，then she WOULD BECOME ill. 是不同的啊我觉得。

简单说就是，这题里面 to develop……我觉得应该是将来的事情（为了……，我们应该更加……），反正应该说的不是过去的事情。所以应该用 would do而不是 would have done啊，为什么这里是 would do呢？
啰嗦很多，都是自己想法，很纠结，望解答。

lillianess

shally莎莎 发表于 2013-8-16 15:19
亲，我仔细分析了你提供的隐含条件句各种情形，好像没有一种和本题相符。 ...

To have studied harder, you would have passed the examination. 你学习更用功些，你早就考及格了。(=If you had studied harder, you…)

shally莎莎

lillianess 发表于 2013-4-6 16:41
本题应当是含蓄条件句的第一种情况。大家一起揣摩揣摩

亲，我仔细分析了你提供的隐含条件句各种情形，好像没有一种和本题相符。