OG 22 (10th edition)

22.   The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically sprang to life not in a flash of inspiration but evolved slowly from previous works.

(A) sprang to life not in a flash of inspiration but evolved slowly

(B) sprang to life not in a flash of inspiration but were slowly evolved

(C) √ did not spring to life in a flash of inspiration but evolved slowly

(D) did not spring to life in a flash of inspiration but had slowly evolved（C）

(E) did not spring to life in a flash of inspiration but they were slowly evolved

毫无疑问是选C，

我的问题是：为什么是evolved ， 而不是evolve呢？

我的理解应该是 did not only spring... but also evolve才对呀。还是说我这种理解把原句的“不是而是”变成了“不仅而且”？

可是，“不是而是”不是应该是did not + do ... , rather than did...吗？

请大虾解释。

我搜索不到og 22的相关帖子，看来大家对这道题都没有什么问题。

not ...but(rather), rather than, instead of都可以表示不是而是。

not...but一般要求句子结构平行。

The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically did not spring to life in a flash of inspiration but evolved slowly from previous works.

相当于：

The voluminous personal papers of Thomas Alva Edison reveal that his inventions typically did not spring to life in a flash of inspiration, instead, they(his inventions) evolved slowly from previous works.

时态一致要求evolve得是过去时。