以下是引用就醉一生在2007/3/5 20:09:00的发言：关于one that: Astronomers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science. (A) that they believe is (B) that they believe it to be (C) they believe that it is of (D) they believe that is (E) they believe to be of Choice E is best. The pronoun that in A and B should be deleted, since the pronoun one is sufficient to introduce the modifier and the sentence is more fluid without that.
The proposed urban development zones do not represent a new principle; it was employed in “Operation Bootstrap” in Puerto Rico. (A) do not represent a new principle; it (B) represent not a new principle, but one that (C) are not a new principle; the same one (D) are not a new principle, but one that (E) are not new in principle; it
the key is B
两处的that作用不同，上题作为代词和one 一起出现错误，下题作为引导词在one后表达正确。
不太明白，为什么第一题A中的that就是代词？依我之见，they believe作为插入语， that引导修饰one的定语从句。 请多指教！ | 
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发表于 2008-8-13 22:43:00
