大家来讨论一下 GWD6-Q41

sachiel87

The greatest road system built in the Americas prior to the arrival of Christopher Columbus was the Incan highway, which, over 2,500 miles long and extending from northern Ecuador
through Peru to Southern Chile.

1. Columbus was the Incan highway, which, over 2,500 miles long and extending
   

Columbus was the Incan highway, over 2,500 miles in length, and extended

Columbus, the Incan highway, which was over 2,500 miles in length and extended

Columbus, the Incan highway, being over 2,500 miles in length, was extended

Columbus, the Incan highway was over 2,500 miles long, extending
答案居然给的是E。由于the Incan highway was over 2,500 miles long部分是插入语，那么整句话的主语就是road system，后面加个extending，明显没谓语嘛～

sachiel87

The greatest road system built in the Americas prior to the arrival of Christopher Columbus was the Incan highway, which, over 2,500 miles long and extending from northern Ecuador through Peru to Southern Chile.


A.Columbus was the Incan highway, which, over 2,500 miles long and extending
B.Columbus was the Incan highway, over 2,500 miles in length, and extended
C.Columbus, the Incan highway, which was over 2,500 miles in length and extended
D.Columbus, the Incan highway, being over 2,500 miles in length, was extended
E.Columbus, the Incan highway was over 2,500 miles long, extending
答案居然给的是E。由于the Incan highway was over 2,500 miles long部分是插入语，那么整句话的主语就是road system，后面加个extending，明显没谓语嘛～

jiaxizou

有谓语的，楼主粗心了。
The greatest road system是主语，built in the Americas prior to the arrival of Christopher Columbus 作定语修饰修饰The greatest road system。
the Incan highway 是The greatest road system的同位语，在the Incan highway的后边不是跟了个was 么？was就是谓语了。

sachiel87

哎，我把两个逗号间的整句（包括was）全都当成插入语来修辞前一个名词了

没想到它是同位语从句

话说这种同位语和插入语太难区分了

sachiel87

刚才白痴了

从句里已经有was证明只能是同位语从句了，哎

419195959

请问B哪错了呢

daisy57

B的 , and extended 是不是没主语啊？

daisy57

？B 选项中 ,over 2,500 miles in length,修饰的是谁

jasonyu0704

A. Columbus was the Incan highway, which, over 2,500 miles long and extending
-though the modifier which correctly describes highway, the "sentence" is actually a sentence fragment, as the which needs to be followed by a verb (preferably "was")

B. Columbus was the Incan highway, over 2,500 miles in length, and extended
-the use of extended in the absence of which was is incorrect; the proper construction should be extending (as extended gives the impression that the road was intentionally lengthened rather than simply existing between two points).

C. Columbus, the Incan highway, which was over 2,500 miles in length and
extended
-since the phrase the Incan highway is set off by commas, the entire introductory modifier is describing the Incan highway. As a result, the which is unnecessary since it creates a sentence fragment.

D. Columbus, the Incan highway, being over 2,500 miles in length, was extended
-BEING IS BAD!!!!

E. Columbus, the Incan highway was over 2,500 miles long, extending
-The introductory phrase The greatest road system built in the Americas prior to the arrival of Christopher
Columbus properly describes the Incan highway. Furthermore, the subordinate phrase extending from
northern Ecuador through Peru to Southern Chile provides additional information about the length of the highway in a manner that is grammatically correct.

Though tricky, the correct answer is E.

wangyue1982

"The greatest road system built in the Americas prior to the arrival of Christopher Columbus,"
这句同位主语，所以e对