说说OG13上我不懂的解释，请牛牛帮帮忙

小皮球PAL

37.Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries.


(A)it is so debilitating that it has become an economic
(B)it is of such debilitation, it has become an economical
(C)so debilitating is it as to become an economic
(D)such is its debilitation, it becomes an economical
(E)there is so much debilitation that it has become
an economical

关于这个问题一小点疑惑，B项OG解释的是debilitation的意思和愿意不同，是不是因为是名词不好的原因。

weh232

37.Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries.


(A)it is so debilitating that it has become an economic
(B)it is of such debilitation, it has become an economical
(C)so debilitating is it as to become an economic
(D)such is its debilitation, it becomes an economical
(E)there is so much debilitation that it has become
an economical

关于这个问题一小点疑惑，B项OG解释的是debilitation的意思和愿意不同，是不是因为是名词不好的原因。

-- by 会员 小皮球PAL (2012/11/21 16:47:59)

我最大的疑惑是后面的从句为什么用完成时，为什么不需要和主句保持一致

lorinlee

D项明显是两个句子，没有连词，直接排除

wangwei1128

倒过来看 it is so as to

enchanter木

请问是否 so 。。。as 。。。。。todo通常用于否定句？

cxroger

求A和C间怎么做选择

-- by 会员 clairloo (2013/1/7 11:20:46)

so … as to be/do一般用于单一主语，但是不能相隔太远，否则可以视为错误。而且不可以倒桩。
这里应该用强调句型，所以第一个it是形式主语，而后边那个it是schistosomiasis

clairloo

求A和C间怎么做选择

enchanter木

先用economic和economical排除，然后是
B选项中, it is........我觉得首先可能是句子有两个谓语动词is，不对，然后是(个人认为)It is of such debilitation是倒装，such后应该加adj，请问lz正确答案是？

lifeforest

(C)so debilitating is it as to become an economic

这个读起来好别扭，而且找不到主语谓语啊。

zzy2885492

C项： so …A…as to  B       做了A，为了达到B。
肯定和愿意不符。