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 economic
题目分析:
本题具有比较词more…than…。
选项分析:
A选项:比较对象不正确,我们应该比较的是不同时间的两件事,而不是两个时间(now)。
B选项:economic和economical的意思不同,前者是“经济”的意思,后者是“节约的”意思,在逻辑上,和“社会(social)”产生并列关系的应该是“经济”,而不是“节约的”。
C选项:economic和economical错误同(B)。
D选项:Correct. 本选项在语法和逻辑上均是正确的。
E选项:比较对象不正确错误同(A)。
①OG提到是一个hepothetical situation(知道更多),所以要求一个“conditional”或“contrary-to-fact”结构,所以要用would have to know.
②DE去比较的话...还是补全了than now 要更优一些
本题不需要判断would。 would表示的是委婉而已
通过 social 与 economic 平行。 比较对象平行选出D
平行问题 they would know a great deal more than they do now
than 前后应有相同成分,就这题而言,前面应有时间状语,后面才能直接跟now
know a great deal in the future than now
否则的话就可以理解为比较对象不一致(转)
economical 节约的
economic--social
额 没看见 单词不一样.....
比较对象不正确,我们应该比较的是不同时间的两件事,而不是两个时间(now)。
虚拟语气
操,我选了B。
操,我也选了B。
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A选项:比较对象❌:what demographers need to know 和now对比;
B选项:conditional verb is needed; 'economical'....经济的,偷换key word了;
C选项:'economical'....经济的,偷换key word了;
E选项:比较对象不对等
E选项可不可以视为将 they do 省略了???在曼哈顿上也看到过省略的情况中可以省略句子
BC两项偷换形容词economic和economical,排除
more than前后比较对象需要一致,排除AE
economic和evonomical……忠实原文
economic adj.经济的、经济学的
economical adj.实惠的、节约的
RON的回答:i think this sentence makes sense with either "would have to" or "have to". there's a slight rhetorical difference ("would have to" carries the connotation that these forecasts are just hypothetical and don't actually have to be developed, or that at least it's not important, while "have to" implies that these forecasts are important and have to be made),
but you don't have to make such rhetorical distinctions on the exam.in this case, you don't have to, since both choices involving "have to" (without "would") are wrong for other reasons.
与现在请款明显背反,用虚拟语气。would have to know
would和have to组和而成一个完整的“would have to”,这是一个不可割裂的整体!表示一件应当做但没做的事,表示“现在(注意是“现在”!)应该如何,但事实与之不符(或相反)”。我们可以看到这里有明显的背反:原题中有more than now,答题中有更明确的more than they do now,均已构成明显背反,所以选D无疑。但是要注意,由于have to本身就有“应该”的意思,在上下文中如没有出现明显的背反或明显违背公认的事实及常识的时候,不应使用“would have to”,用“have to”既可。
必须注意,would have to的出现在英语中有些限制,那就是要求本句或紧邻的上下文中如有“目前并非如此”之类的明确表达或与事实及公认常识明显不符,否则宜用have to而不是would have to。还有在强调“必须性”时,比如你说“法律规定,每个儿童都必须受教育”,尽管你知道有很多失学儿童,可这里是强调必须,就还得用have to而不能用would have to。
没有注意economical
would和have to组和而成一个完整的“would have to”,这是一个不可割裂的整体!表示一件应当做但没做的事,表示“现在(注意是“现在”!)应该如何,但事实与之不符(或相反)”。我们可以看到这里有明显的背反:原题中有more than now,答题中有更明确的more than they do now,均已构成明显背反,所以选D无疑。但是要注意,由于have to本身就有“应该”的意思,在上下文中如没有出现明显的背反或明显违背公认的事实及常识的时候,不应使用“would have to”,用“have to”既可。
必须注意,would have to的出现在英语中有些限制,那就是要求本句或紧邻的上下文中如有“目前并非如此”之类的明确表达或与事实及公认常识明显不符,否则宜用have to而不是would have to。还有在强调“必须性”时,比如你说“法律规定,每个儿童都必须受教育”,尽管你知道有很多失学儿童,可这里是强调必须,就还得用have to而不能用would have to。