OG12-85 对Ron大神解释理解无能 求高人指教

Jagabee

过来炒一下OG  SC85这道题的剩饭

Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of an ancient civilization that flourished at the same time as the civilizations in the Nile delta and the river valleys of Tigris and Euphrates.

a. same
b. that had flourished at the same time as had the civilizations
c. that flourished at the same time those had
d. flourishing at the same time as those did
e. flourishing at the same time as those were



正确选项A, 我选了D

看了Ron大神的答复,感觉有些部分在冲突：http://www.manhattanprep.com/gmat/forums/salt-deposits-and-moisture-t5617.html

如果说Ｄ选项中的did不可以取代flourished, 所以选择省略flourished的A我能接受. 但我看到Ron大神说, 如果要用did，要将did置于主语前, 这样就可以

“by the way, if you WERE going to include "did", preferred usage conventions actually place it BEFORE its subject: "...as did the civilizations in the nile delta..."one would never speak this way, but it's the best way to write these sorts of constructions in formal usage.”

我以为这不仅是动词选择, 还是位置的问题. 但接下来我又看到他举了四个comparison的正确例子：

“either of those constructions is fine:

francis ran faster than xavier.
francis ran faster than xavier ran.
francis ran faster than did xavier.
francis ran faster than xavier did.

all parallel.  the repetition in the second one would likely be considered fairly awkward, though; that's the point of replacing "ran" with the helping verb "did" in the third and fourth examples.”

我又困惑起来．　如果说第三个和第四个例子都是正确的，那么OG12-85的D选项为什么不对呢.

求高人指教.


　

Jagabee

重新看回这道题

还是不是很清楚用do来替代前句动词的具体依据

但是选项D的错误 貌似是因为flourishing 和 did 不构成平行关系

Jagabee

如果选项D 是 that flourished at the same time as the civilizations did

可能是正确的......