请教OG-9

lingxia

9. 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.

对A.B的解释是，that要删除，
请问定语从句的that不是要加出的吗？One that。。。。在语法上是不是对的呢？删除that是不是仅仅从简洁的角度考虑的？
谢谢

m163z

在og上不是说了在这里one已足够引导宾语从句了吗？所以在这里that可以不要的！我认为在这里one就相当于that在宾语从句中的作用，是个先行词！不知我的理解对不对！

lingxia

我明白你的意思了，就是说one在这就相当于which，who等的先行词

那么one that在语法上也是错的了

m163z

我认为是这样的！，在one作为被修饰的名次时，后面的that或which等可以省了!