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. In B and C, it and that it are intrusive and ungrammatical: the idiom is "believe x to be y." In the context of this sentence, the infinitive to be is more appropriate than the limited present-tense is in referring to an event that occurred long ago but has been discovered only recently. Finally, A, B, and D lack of and so illogically equate this particular explosion with the whole class of explosions to which it belongs: it is not a type but possibly one of a type.
A -> one （a distant supernova explosion) is a type...，exposion不能是一种type，错 B -> 同上，to be a type 错 C -> belief that ，宾语从句错，这里应该出现的是一个修饰one的东西，而不是宾语从句 D -> 同A E -> 正确，they believe...整句修饰one，of表属性，就是说， A distant supernova explosion is of a type...
我也不太懂这道题, 同位语应该怎么个用法阿? one that中的that 一定可以省略吗还是有别的什么含义呢? 还有, 这个能不能还原成believe one to be ....呢? 如果可以, 那c能还原成believe one that ...吗? 我听XDF上的说c,e都对,只是e比c简洁.
另外,believe 除了believe that和believe sth to be sth有没有可以用believe sth adj.的呢? 恳请大牛们指点一下.
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发表于 2008-3-21 05:16:00
