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题库 / Prep2012-SC-30
A recent poll of elected officials suggests that candidates, when in the midst of a tough campaign, often make statements about an opponent that they may not think is true.
is
are
to be
of as
it is
题目分析：
想正确得到本题的答案，需要对嵌入式关系分句概念十分熟悉。
选项分析：
A选项：如果在划线部分填入is，则根据就近修饰原则，定语从句that they may not think is true必然修饰一个最近的单数名词。按照嵌入式关系分句的概念，该句可以还原为：
they may not think (that) an opponent is true.
在逻辑上，它们可能不认为对的，应该是“言论”，而不是“对手”。
B选项：Correct. 本选项在语法和逻辑上均是正确的。
C选项：填入的to be后，该定语从句不再是嵌入式关系分句，就算该从句可以跳跃修饰名词statements，代入先行词则有：
they may not think statements to be true.
复合宾语statements to be true需改为宾语从句。这点考查了不定式和从句的区别。由于think是看法类动词且属于主动语态，所以约束力较弱，应该用宾语从句。
D选项：of和as均为介词，放在一起导致了语法错误。
E选项：若填入it is，则整个句子变为：
they may not think (that) it is true.
该定语从句中什么成分也不缺少，导致了先行词无法在定语从句中充当任何成分。
嵌入式关系分句：有一种关系分句(即定语从句)，它既是先行词的后置修饰语(即定语)，同时又是另外一个分句结构的宾语(即宾语从句)
In his breastpocket he had a patch of scarlet, which I suppose was the paper cap serving as a handkerchief.
还原进定语从句并补全省略部分，则有：
I suppose (that) patch of scarlet was the paper cap serving as a handkerchief.
注意理清语义，本题的宾语应是statements about an opponent 而不是opponent！
即：A recent poll of elected officials suggests that candidates, when in the midst of a tough campaign, often make statements about an opponent that they may not think are true.
最近一项对当选官员的民意调查显示，在激烈的竞选中，候选人往往会发表自己可能认为不真实的关于对手的言论。
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