GMAT句子改错not only A but also B考法全解.

2017-04-25 10:16

来源：新东方

作者：周谢慧

在GMAT句子改错科目中，not only but also可以说是必考考点。但是很多同学只知道not only A but also B常规考法，即平行结构的考法：A和B必须平行。今天我来带着大家仔细分析分析not only but also的四种考法，从而做到遇到该考点的题不会做错。

　　1. not only A but also B的平行结构

　　我们先来看个例题：

　　At the end of the 1930s, Duke Ellington was looking for a composer to assist him—someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well in order to finish the many pieces he had started but never completed.

　　(A) someone not only who could arrange music for his successful big band, but mirroring his eccentric writing style as well in order to finish

　　(B) someone who could not only arrange music for his successful big band, but also mirror his eccentric writing style in order to finish

　　(C) someone who not only could arrange music for his successful big band, but also to mirror his eccentric writing style in finishing

　　(D) that being someone who could not only arrange music for his successful big band, but mirroring his eccentric writing style for finishing

　　(E) being someone not only who could arrange music for his successful big band, but mirror his eccentric writing style as well, finishing

　　这道题的答案是B选项。not only arrange … but also mirror平行，句子意思也是递进关系(虽然这道题没有靠句子意思选出答案，但是意思在解题过程中非常重要)。

　　2. not only A but (also) B的平行结构

　　这里的also用括号括起来，也就是说also是可以省略的。not only A but B也是正确的平行结构，我们来看一道例题：

　　By pressing a tiny amount of nitrogen between two diamonds to a pressure of 25 million pounds per square inch, scientists not only were able to transform the gas into a solid, but they also created a semiconductor similar to silicon.

　　(A) not only were able to transform the gas into a solid, but they also created

　　(B) not only were able to transform the gas into a solid but also creating

　　(D) were able not only to transform the gas into a solid but also creating

　　(E) were not only able to transform the gas into a solid, but they were also able to create

　　这道题的答案是C选项，印证了also可以省这个结论。