同位语从句中的that不是不可省略吗？？！！

yunstories · 发表于 2011-12-23 02:29:11

之前看到有总结说同位语从句中的that是不可省略的，但是发现prep2007中有一题与之矛盾，如下

98. A decade after initiating the nation's most comprehensive and aggressive antismoking program, per
apita 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.

正确选项
(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

解释：D正确, California作为initiating的逻辑主语,符合逻辑; a drop…结构符合同位语构成; that代替a
drop使得比较双方对等

疑惑：如果a drop...是一个同位语从句，那么它是省略了that吗？？
如果a drop...不是同位语从句，仅仅是作为一个同位语，那不是更加不合理了吗？名词性同位语是用一个名词解释前文中的一个名词，但是这前面没有名词可以用drop来解释呀~~
纠结中，求解~~

2g6d · 发表于 2011-12-23 22:27:46

more than不能作同位语，但能作定语/状语。

以prep1－98为例：正确答案D为：

A decade after initiating the nation's most comprehensive and aggressive antismoking program, 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 in the nation as a whole.

如果D省去a drop，more than短语可以在句末作状语修饰主句动词seen，逻辑不对。more than也可看作省略了which is的非限制性定语修饰前面的名词60，同样逻辑不通。

为了清楚地跳跃修饰60前面的名词decline，我们必须将定语改为同位语结构：a drop more than。drop非常有针对性地指代decline这个过程而不会产生修饰60的歧义，既符合语法规则又符合逻辑。

同位语从句中的that不是不可省略吗？？！！

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