PREP08-173 请求牛人前辈帮助讨论下谢谢 TT

GM2011 · 发表于 2011-10-25 17:42:01

173-The widely accepted big-bang theory holds that the universe began in an explosive instant 10 to 20 billion years ago and has been expanding ever since.

A.that the universe began in an explosive instant 10 to 20 billion years ago and has been expanding

B.that the universe had begun in an explosive instant 10 to 20 billion years ago and had been expanding

C.that the beginning of the universe was an explosive instant 10 to 20 billion years ago that has expanded

D.the beginning of the universe to have been an explosive instant 10 to 20 billion years ago that is expanding(A)

E.the universe to have begun in an explosive instant 10 to 20 billion years ago and has been expanding

为什么A对？ and has been与holds不并列平行呀？嘻嘻嘻谢谢谢谢谢谢前辈们的帮助

specta · 发表于 2011-10-25 19:11:39

and has been 跟 holds之间没有时态制约的关系。

holds that "the universe began.... and has been expanding..."

has been 和began才有关系-- 同主语。但是，同一个句子中，2个verb可以时态不一致：refer to OG page 712 problem 56

GM2011 · 发表于 2011-10-25 20:34:09

嘻嘻嘻谢谢啦谢谢啦好人前辈嘻嘻嘻

GM2011 · 发表于 2011-10-25 20:39:07

嘻嘻嘻好人前辈那and的作用不是起并列做用了吗？还是有一点点的迷糊中，，， TT 。。。能否在进步解释下谢谢啦谢谢啦

PREP08-173 请求牛人前辈帮助讨论下谢谢 TT

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