GMAT备考 | SC常见最优选的同位语结构你掌握了吗?

题目练习
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Since the 1930s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly that the air passing over them would not become turbulent.
A. wings, shaped so smoothly and perfectly
B. wings, wings so smooth and so perfectly shaped
C. wings that are shaped so smooth and perfect
D. wings, shaped in such a smooth and perfect manner
E. wings, wings having been shaped smoothly and perfectly so
解题要点
1. 对前面的名词做同位解释说明:
2. 对前面的句子做同位解释说明:
题目解析
题目:
Since the 1930s aircraft manufacturers have tried to build airplanes with frictionless wings, shaped so smoothly and perfectly that the air passing over them would not become turbulent.
A. wings, shaped so smoothly and perfectly
B. wings, wings so smooth and so perfectly shaped
C. wings that are shaped so smooth and perfect
D. wings, shaped in such a smooth and perfect manner
E. wings, wings having been shaped smoothly and perfectly so
解析:
语义:自上世纪30年代以来,飞机制造商一直试图制造出机翼无摩擦的飞机,机翼如此光滑、形状如此完美,以至于通过机翼的空气不会产生湍流。
原句主干:Since the 1930s(时间状语) aircraft manufacturers have tried to build airplanes with frictionless wings(主句), shaped so smoothly and perfectly that the air passing over them would not become turbulent.
A选项,shaped so smoothly修饰不当,塑形的十分顺滑,逻辑语义不合理,smooth就是wings本身的质感顺滑,跟shape什么形状没有关系。
B选项正确,副词perfectly修饰过去分词shaped,形容词smooth修饰wings,(wings so smooth and so perfectly shaped)这部分整体是前面wings的同位语,有同学会有疑问说为什么要把wings再写一遍,这个其实不需要有疑问,一方面这是同位语表达的结构之一,另一方面这种结构也是最优表达,因为修饰最清晰,绝对不会有歧义。
C选项,shape在这里做动词,应该用副词修饰。
D选项,smooth manner修饰不当,顺滑的方式逻辑语义不合理。
E选项,having been shaped语法错误,having done/ having been done不能紧跟在名词后面做后置定语。
方法总结
了解了同位语之后,你会发现这个知识点其实不难,之后在练习题目的时候注意识别并根据语义判断即可。
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