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标题: 大全140,还不明 [打印本页]

作者: jeremy2000 时间: 2004-5-8 17:09
标题: 大全140,还不明

140. It may be another fifteen years before spacecraft from Earth again venture to Mars, a planet now known to be cold, dry, and probably lifeless.

(A) again venture to Mars, a planet now known to be

(B) venture to Mars again, a planet now known for being

(D) venture again to Mars, a planet that is known now to be（A）

(E) will again venture to Mars, a planet known now as being

请问为什么不用将来时?

作者: redjean 时间: 2004-5-8 18:04
我觉得从逗号后面的部分已经能够比较出来A最好了。时态我就不懂了，请教。

作者: philikittist 时间: 2004-5-8 19:32
在从句里表达将来的意思，一般都用现在时吧。

作者: jeremy2000 时间: 2004-5-10 08:43
venture为什么加s，spacecraft 为复数吗？

作者: echochen 时间: 2004-9-6 15:42

1) spacecrafe单复数同形.在本题应理解为复数

2)时间状语从句和条件状语从句一般不能用将来时态,用现在时表示将来

3) be known as 和 be known to 两者含义不同

be known as :表被称为 eg. Mozart is known as famous musician.

be known to d表被知道某个信息

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