og12sc04

yangreat

4. 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

OG上，C、D选项的解释如下
C It is none that is more … is wordy; also, in this
context, it must refer to something (unlike in
phrases such as “it is clear that …”), yet it
does not plausibly refer to anything.
D As in C, it is none that was more … is wordy;
it must refer to something,

想请问是不是这两个选项that之后接了 is/ was 所以it才有指代问题呢？还是因为none本身的问题？谢谢！

stellapass

客气客气~

yangreat

受教了，谢谢！

stellapass

我觉得it的指代问题与is was none，都没有关系。就像OG所解释的一样，it必须有具体指代，指代前面任何名词都不合逻辑。

yangreat

补充问题：我觉得it is none 是主系表结构，是不是从这里来看，it应该有所指代呢？