题都来自于og，都是我自己总结的，希望大家有这方面的问题和好的语法解释都往上贴，可以加深对平行对称结构的理解：

　　og-89. A recent national study of the public schools shows that there are now one microcomputer for every thirty-two pupils, four times as many than there were four years ago.

　　(A) there are now one microcomputer for every thirty-two pupils, four times as many than there were

　　(B) there is now one microcomputer for every thirty-two pupils, four times as many than there were

　　(C) there is now one microcomputer for every thirty-two pupils, four times as many as there were

　　(D) every thirty-two pupils now have one microcomputer, four times as many than there were(C)

　　(E) every thirty-two pupils now has one microcomputer, four times as many as

　　这里as后面跟的是句子，从句的宾语就是as many (computers)as中的computer

　　132. 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)

　　(E) as many as are enrolled in

　　这里as后面跟的是句子，从句的主语就是as many (people)as中的people

　　156. Dirt roads may evoke the bucolic simplicity of another century, but financially strained townships point out that dirt roads cost twice as much as maintaining paved roads.

　　(A) dirt roads cost twice as much as maintaining paved roads

　　(B) dirt roads cost twice as much to maintain as paved roads do

　　(C) maintaining dirt roads costs twice as much as paved roads do

　　(D) maintaining dirt roads costs twice as much as it does for paved roads(B)

　　(E) to maintain dirt roads costs twice as much as for paved roads

　　这里as后面跟的是句子，从句的宾语就是as much (money)as中的money

　　187. In one of the bloodiest battles of the Civil War, fought at Sharpsburg, Maryland, on September 17, 1862, four times as many Americans were killed as would later be killed on the beaches of Normandy during D-Day.

　　(A) Americans were killed as

　　(B) Americans were killed than

　　(C) Americans were killed than those who

　　(D) more Americans were killed as there(A)

　　(E) more Americans were killed as those who

　　这是一个比较特别的例子

　　我是这么理解的：句子主谓宾在的在as-as 结构中，强调four times，第一个as引导的句子的主语与第二个as引导的主语比较，第二个省略

　　198. Although Napoleon’s army entered Russia with far more supplies than they had in their previous campaigns, it had provisions for only twenty-four days.

　　(A) they had in their previous campaigns

　　(B) their previous campaigns had had

　　(C) they had for any previous campaign

　　(D) in their previous campaigns(E)

　　(E) for any previous campaign

　　?A is more -----than b

　　a,b 应该是相同的成分

　　这个句子，不理解，than的后面应该也是出现相同的比较成分，如果补全是supllies for any previous campaign，这样不是有点不平行的问题吗?

　　253. Analysts blamed May’s sluggish retail sales on unexciting merchandise as well as the weather, colder and wetter than was usual in some regions, which slowed sales of barbecue grills and lawn furniture.

　　(A) colder and wetter than was usual in some regions, which slowed

　　(B) which was colder and wetter than usual in some regions, slowing

　　(C) since it was colder and wetter than usually in some regions, which slowed

　　(D) being colder and wetter than usually in some regions, slowing(B)

　　(E) having been colder and wetter than was usual in some regions and slowed

　　the weather 和 usual 是两个不对称的，可以进行比较吗?

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