请教各位NN一个问题：Of all the vast tides of migration that have swept through history, maybe it is none that was more concentrated than the wave that brought 12million immigrants onto American shores in little more than three decades.为什么说“it”没有指代对象呢？
it is none that was more concentrated than the wave that brought 12 million immigrants onto American shores in little more than three decades. 是一个强调句，也就是说句子在同时去掉：it, be动词，和that 三者后，句子仍是完整句子。
it is none that was more concentrated than the wave that brought 12 million immigrants onto American shores in little more than three decades. 是一个强调句，也就是说句子在同时去掉：it, be动词，和that 三者后，句子仍是完整句子。
即 None was more concentrated than....
在强调句中，it只是强调句的组成成分，并不指代任何人、事、物
-- by 会员 superbat28 (2012/8/13 17:15:49)
求问BAT大神，这里OG上说 in this context, it must refer to something. 我理解这里强调句 it is...that 很wordy，但是it 为啥一定要有所指代呢？强调句 还有形式主语 it本身不就没有指代么 为啥OG说他错在 “it本必须指代一个东西，但是它没指”呢？
我觉得这位同学解释的很好 D has many issues: 1. "is" is in present tense, while the sentence demands past tense. 2. "it" is not required in D as the pronoun "it" does not refer to any antecedent. Hence, it more acts like a demonstrative pronoun, which is not required here. 3. When you say "it is none that was", you are stressing on "none", while the sentence construction does not need this stress. 4. Just another thought - "maybe" is an informal use of "perhaps". "perhaps" is formal. But, just this does not clearly make D wrong.
from http://gmatclub.com/forum/of-all-the-vast-tides-of-migration-that-have-swept-through-105900.html
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发表于 2012-8-12 17:20:07
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发表于 2012-8-13 17:15:49
