PREP-176

176. The Nobel Prize in chemistry was awarded to three scientists for their discovery that plastic can be made electrically conductive—an advance that has led to improvements in film, television screens, and windows.

A. that plastic can be made electrically conductive—an advance that has led

B. that plastic can be made electrically conductive—this advance leading

C. that plastic can be made to be electrically conductive, and this advance led

D. of plastic's ability to be made electrically conductive, with this advance leading

E. of plastic being able to be made electrically conductive—an advance that has led

A: correct, discovery后直接跟that从句,排除D,E; 用that从句修饰an advance是同位语的首选

B: 同上

C: be made to be错

D: 应为that从句

E: 应为that从句

这道题A和B两个选项中A的that修饰advance是更好一些, 但我不明白的是为什么要用has led呢?

"discovery"虽是过去某一时刻发生的,但对现在存在持续的影响,故用现在完成时.

我想請教一下

B用this advance..這個this可以指代前面的的發現嗎?

(ETS好像不偏好用this這個指示代名詞..)

请问这里的同位语an advance  是修饰 discovery的么？还是指代前面discovery+that?

同位语可以用一个词来总结前面一句话的内容么？

还是有点晕，同位语可以分为修饰名词的名词性同位语，以及概括一个句子的概括性同位语么？

还有，我记得同位语修饰的成分必须对等，否则要改为状语修饰。这条只是针对名词性同位语的么？

可以的。

概括性同位结构：用一个概括性的名次去概括前面的解释现象:短语/句子, a program/imformation/ an effort/ a practice that

特别注意:概括性同位结构必须能"概括"，逻辑意思要符合生活事理和科技常识.