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幸运E枪兵 · 发表于 2012-3-18 15:20:35

Of all the vast tides of migration that have swept
through history, maybe none is more concentrated as
the wave that brought 12 million immigrants onto
American shores in little more than three decades.

(A) maybe none is more concentrated as

(B) it may be that none is more concentrated as

(C) perhaps it is none that is more concentrated than

(D) maybe it is none that was more concentrated
than

(E) perhaps none was more concentrated than

The correct answer is E.

请问为什么划线部分的时态要用过去式呢？求指教

clairexuan9 · 发表于 2012-3-18 15:52:03

Brought 表明要用过去式

幸运E枪兵 · 发表于 2012-3-18 15:59:24

那是不是被比较的两个句子时态都应该相同？

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