[求助] gwd 31-28

xuedidage

想顶一下.  I think dated at is better than dated to be

titatita

e

ziwingfong

这题最后选什么啦？C OR E？我觉得at 应该指具体某点时间。

stevezhao

记得OG11中有一题和这个类似，也是在to be 和at中选一个，当时的解释是过去一直存在的东西最近被发现，要用to be， 而不用at。我的 OG11是pdf的，没法search。哪位NN再看一下？

stevezhao

找到那到题了，不知OG的解释是否也适用于这个28题：

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.

Jolin_hz

Cambrige dictionary

date    

 to say how long something has existed or when it was made:
e.g.Archaeologists have been unable to date these fossils.
An antique dealer had dated the vase at (= said that it was made in) 1734.

so E

woyuhong

up

dan2007

up

szy733

up

gracezz

South Carolina fire pit dated to be 50,000-year-old

又找到这样一个句子.....

看来也可以说be dated to be....

顶一下