[求助]prep1-98 比较prep-33

关于more than结构是否能充当同位语？

prep1-98

A decade after initiating the nation's most comprehensive and aggressive antismoking program, per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as in the nation as a whole.

(A) per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as

(B) annual per capita consumption of cigarettes in California declined from over 125 packs to about 60, more than twice as great as that

(C) California's annual per capita consumption of cigarettes declined from over 125 packs per person to about 60, more than twice as great as the drop

(D) California has seen per capita consumption of cigarettes decline from over 125 packs annually to about 60, a drop more than twice as great as that

(E) California has seen annual per capita consumption of cigarettes decline from over 125 packs per person to about 60, more than twice as great as that

答案：D

(B) With 20 percent of the world's fresh water, that is more than all the North American Great Lakes combined, Siberia's Lake
                Baikal has more than 300 rivers that drain into it.

(C) Siberia's Lake
                Baikal, with more than 300 rivers draining into it, it holds more of the world's fresh water than all that of the North American Great Lakes combined, 20 percent.

(D) While more than 300 rivers drain into it, Siberia's Lake
                Baikal holds 20 percent of the world's fresh water, which is more than all the North American Great Lakes combined.

(E) More than all the North American Great Lakes combined, Siberia's Lake
                    Baikal, with more than 300 rivers draining into it, holds 20 percent of the world's fresh water.
            

答案：A

问题：

prep对于这两题的解释明显存在矛盾，98题（prep解释为E的错误在于more than不是合理的同位语结构，所以用a drop概括前面部分的意思，构成独立主格）；33题（prep解释为A的more than结构是很好的同位语结构），按照我的理解，是否应该把答案改成 the quantity more than all the North American Great Lakes combined ？

查询了以前的帖子，同僚有同样疑惑：http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=340678&replyID=&skin=1

请各位NN指教，谢谢！

查询了以前的帖子，同僚有同样疑惑：http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=340678&replyID=&skin=1

请各位NN指教，谢谢！

同问,我33也是选e的

a的morethan是修饰啥的呀?

33. more than 300 rivers在这边我认为就是句子的主词，并没有修饰谁

然后后面的more than all the North American Great Lakes combined就是作同位语修饰20 percent of the world's fresh water

我在这边是疑惑选项(D)

非限制形容词子句which不能修饰名词短语马？

例如他说which不能指20 percent of the world's fresh water 只能指the world's fresh water

那同位语就可以修饰名词短语？

请NN帮忙解惑......

我也有对于E的疑惑，觉得E的解释关于将BAIKAL与5大湖直接进行比较，概念不对等有问题，湖与湖比较应该对等才对啊。

而且，E选项还原之后应该是More than all the North American Great Lakes combined, Siberia's Lake Baikal holds 20 percent of the world's fresh water.我不觉的整句话有问题啊。

且这里我的疑问是combined是作为后置定语还是做谓语啊？如果是谓语的话，比较的两边时态不对等啊？

请指教！

这两题还是有区别的。98 中a drop 概括了 decline from ... to 这个过程，所以要用 a drop 对全句概括；而33题more than ...结构是与20 percent of the world's fresh water， 而不是与holds 20% of ... 同位，所以没有必要a quantity。

关于33题E选项，more than all the North American Great Lakes combined 是不能修饰紧接的的Lake Baikal的: 首先combined是过去分词，受动者是All NA Great Lakes，而不是Lake Baikal; 其次，逻辑上more than all ...是修饰20% of the World's fresh water, 作为同位语放在其后面。

按照ls的观点，将combined作为过去分词，起到后置定语的作用，E选项确实有点问题。

将E还原之后，为

 Siberia's Lake Baikal holds 20 percent of the world's fresh water more than all the North American Great Lakes.

那么如果是lake Baikal与all the North American Great Lakes相比，产生歧义，没有补足助动词。如果将20 percent of the world's fresh water与all the North American Great Lakes相比，比较对象不对等。

是否可以这样理解呢？

请指教！