用3道prep笔记，想和大家讨论一下平行中的be动词省略问题，请进，谢谢~

socat1

请看prep笔记上的三道题。
都是有平行的，想和大家讨论一下平行中的be动词省略问题。
72.
Broccoli thrives in moderate to cool climates and propagated by seeds, either sown directly in the field or in plant beds designed for producing transplants.
 (A) propagated by seeds, either sown directly in the field or in plant beds designed for producing
 (B) propagated by seeds, sown either directly in the field or sown in plant beds designed so as to produce
 (C) is propagated by seeds either sown directly in the field or in plant beds designed so that they produce
 (D) is propagated by seeds sown either directly in the fieldorin plant beds designed to produce[U1]
 (E) is propagated by seeds, sown either directly in the field or sown in plant beds designed for producing
[U1]To do表目的更有效>so as to


73.
Evolutionary psychology holds that the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving specific problems human ancestors faced millions of years ago.
  (A) the human mind is not a "blank slate," but instead that it comprises specialized mental mechanisms that were developed as a way of solving
(B) the human mind is nota "blank slate" but insteadcomprises specialized mental mechanisms that were developed to solve[U1][U2]
(C) the human mind, instead of a "blank slate," it comprises specialized mental mechanisms that  have been developed to solve
(D) rather than it being a "blank slate," the human mind comprises specialized mental mechanisms  that have been developed as a way of solving
  (E) rather than the human mind's being a "blank slate," that it comprises specialized mental  mechanisms that were developed as a way of solving
[U1]注意，又出现了to do和别的形式的比较，to do表示目的就是比别的有效
[U2]注意，与A即原文最相似，是有仇报仇

74.

Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of

natural selection, favored due to their enhancement of reproduction or survival, but that they are
simply random by-products of other evolutionary developments.
 (A) due to their enhancement of reproduction or survival, but that they are
 (B) due to the reproduction or survival they enhance, but they are
 (C) because they enhance reproduction or survival, but
 (D) because they enhance reproduction or survival, but are
 (E) because of enhancing reproduction or survival, but are

72的CDE选项：
either do in... or do in ...   或
   do either in... or in...    都是正确的，但是混搭不行。
语法笔记：连词前有谓语动词（do），后面也应该含有谓语动词。
补充说明中提到：（我的理解是be动词是谓语动词的特殊情况）
  在某些情况下,平行结构的第二个成分的谓语动词可以省略:两个句子并列,第一个句子含有be动词或

  者become,第二个句子中的be动词或者become必须省略,同时,一些重复的名词或形容词也必须省略.

  例: Once the economic and social usefulness of the motorwasdemonstrated and its superiority to
                   the horse proved, ... (proved 前省略了 was)※


73的B选项：
语法笔记：系表结构(be)可以与动词(to do)结构平行。

74的D选项：
    be not....but (be)...

想问大家的是：
74D和72补充说明中提到的be动词必须省略是否有联系呢？
如果是，那么怎么理解这两者的关系？
希望以上的总结有什么不足之处NN能够及时指正，还有补充，谢！

socat1

一定要来人呢~~困惑呢~

socat1

socat1

没人~顶

socat1

socat1

bitieming

我认为句子没有歧义原则是大于任何原则的，74中若省略be则有跟because they enhance reproduction or survival的歧义，加入be是为了强调其句子的平行结构。而如果将because这一句去掉，并省略be换成：
Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection but simply random by-products of other evolutionary developments.
这个句子仍然是正确的，因为be存在的强调平行意义没有了。

socat1

mongmong

同意LLS