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 the Tigris and Euphrates.
a) that flourished at the same time as the civilizations
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
关于e选项，我有两个疑问。请教一下
第一个，the same ... as地用法
为什么不要后面的were,是不是因为at the same time as这种情况不要
如果我说 I have the same XXX as you (have),这个时候后面的have还要不要
第二个，those 地用法，这里与those对应的前面的civilization是单数，但是those的那个位置应该是civilizations,是复数，og的解释是说those不能指代前面的civilization单数，那碰到这种问题，those是不是不能用了呢
关于助动词等在比较中的补足问题比较复杂,建议你多看看贴,才能总结出自己的结论.
简单的说,were在这里是不正确的,因为前面出现的动词为flourished,补足应该补did.形式对应.
I have the same XXX as you (have),这里have最好要,因为前面的XXX为宾语,倘若不补足动词的话可能造成平行的歧异,比如把you和XXX相比.
这一点你要多看些帖子.
those在这里应该指代civilizations,每一个代词都要有明确的指代,并且在数上要一致.如果前面是单数,但是后面出现了those,则OG认为没有恰当的复数名词出现用于指代所以是错误的.这种情况要么换单数指代要么就换一个名词,比如A一样直接用the civilizations,就没有歧异了.
一点小体会,希望有帮助.
同意楼上的。those和前面的civilization连单复数都不相同，肯定是指代不清楚了。这在逻辑上等于跨越了一步，civilization--->指代--->复数指代。
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