请大家帮忙分析一下新Prep1-175

Brandon16

Experts estimate that ten times as much petroleum exists in sources like tar sands, heavy oil, and perhaps even in shale than in conventional reservoirs.

A. sources like tar sands, heavy oil, and perhaps even in shale than

B. sources like tar sands, heavy oil, and perhaps even in shale than are

C. such sources as tar sands, heavy oil, and perhaps even in shale as are
        其实大的框架就是as much in as in 不用再加are这里不会产生歧义 perhaps in不应该加in

D. such sources as tar sands, heavy oil, and perhaps even shale as正确

E. such sources as tar sands, heavy oil, and perhaps even shale than

我的问题是C选项如果加了are z怎么变成歧义了，是在看不出来，那位朋友NN可以帮忙讲解和翻译一下。谢谢了。

jy03161061

我認爲解釋說的是這裡不用補全,因爲這裡如果省略是不會有歧義的

Brandon16

可以告诉一下如果加上了是怎么个歧义法吗？谢谢

benny9200

比较结构的省略原则为所有的动词都应该有之前对应的部分 be动词对应be动词 所以如果补出动词首先就认为应该是主语之间的比较 而且主语的谓语动词时be动词 但是之前从句中唯一的动词就是exist 如果是补出的话也应该是补出do或者did也不应该是be 所以首先are就没有对应对象直接排出 另外这里的比较对象应该是资源间的比较 也就是介词修饰语的比较 从句中没有宾语名词 不会引起歧义 所以肯定是不补出的

建议LS看看比较结构的总结贴

Brandon16

谢谢上面的同学，受益了。