[讨论]白勇-一道关于比较结构中省略的题

白勇语法PDF版，第十章逻辑表达第二题

According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation's four-year colleges and universities.

(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

正确选项E，解释说省略了重复的比较对象people（作为are enrolled in...的主语）

但是我查了一下这本书第七章比较结构中对于省略的详细描述，有如下规则：

1. 比较从句谓语与主句谓语相同，可用do，did或does代替。
2. 比较从句连系动词be与主句连系动词be相同，可以省略be，也可以不省略。
3. 主句谓语动词短语使用“助动词（如have，has，had，will）或情态动词（can，could，may，should）+verb”形式时，比较从句往往省略verb，保留助动词或情态动词。
4. 比较从句的主语和谓语与主句的主语和谓语相同时，可以全部省去，常常保留作状语的介词短语或状语从句。
5. 比较从句的主语和主句主语相同，可以省略。

不是nn，和你讨论，我觉得不能看比较的是从句还是主句，看比较的是哪个部分，这里比较的就是宾语for nearly eight million people，比较的从来都是成分，不是只有句子，不知道你的权威解释是不是应该还有补充部分。

这是OG132

OG says: the comparison in E is logical because people is understood as the subject of are enrolled.

According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, (who are) as many as are enrolled in the nation's four-year colleges and universities.

划线部分修饰people, who are省略，仅供参考