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标题: og12-8 E选项，have begun能不能用？ [打印本页]

作者: liulu007 时间: 2012-1-17 07:08 标题: og12-8 E选项，have begun能不能用？

求助，翻了好多帖子都看不到，OG12第八题:
The widely accepted big bang theory holds that the
universe began in an explosive instant ten to twenty
billion years ago and has been expanding ever since.
(A) that the universe began in an explosive instant ten to
twenty billion years ago and has been expanding
(B) that the universe had begun in an explosive instant
ten to twenty billion years ago and had been expanding
(C) that the beginning of the universe was an explosive
instant ten to twenty billion years ago that has expanded
(D) the beginning of the universe to have been an
explosive instant ten to twenty billion years ago that is
expanding
(E) the universe to have begun in an explosive instant
ten to twenty billion years ago and has been expanding

E选项中OG没有提到，想问have begun能不能使用，begin不是延续性的动作，这里用在完成时是不对的吧？

作者: Isabella1006 时间: 2012-1-18 08:34

began 基本上是不能用完成时的啊……

作者: shell6688 时间: 2012-1-19 09:08

我觉得。。。begin瞬时动作不能用于完成时态吧怎么能一直在begin呢。。

作者: voleroiseau 时间: 2012-1-20 11:01

LS的两位都没有说对
瞬间动词是有完成时的, 但是时间状语不能用时间段.或者干脆没有时间状语,例子可以举出一大把

I have finished my GMAT test.

She has closed the deal now.

本题后面有 ten to twenty billion years ago 所以不能用完成时

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