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
(C) will venture to Mars again, a planet now known as being
(D) venture again to Mars, a planet that is known now to be
(E) will again venture to Mars, a planet known now as being
我觉得A和D都可以.D错在哪里呢?答案是A
1,A,强调再次venture to Mars;现在被认为。意思合理。 D,强调再次to Mars,和A的意思有所不同;被认为现在是。意思有变化,而且不合理。
2,known to be + n不可以,要用known as +n。但本题的known to be + adj是可以的,所以A没有问题。
请指正。
dashasha mm:看不懂你的问题。
dashasha mm:看不懂你的问题。
before后面可以/应该是个什麽结构, 应该可以是句子或名词。
如果是句子,那是不是应该before aircraft again ventures to mars. (dashasha mm:is this your question?, I have the same concern)
如果是(E) will again venture to Mars, a planet now known to be, 是不是比(A) again venture(s) to Mars, a planet now known to be 好? I mean in here why do not use 将来时?
1,sheep和spacecraft都是单复数同形。
2,before,when的从句中可以用将来时吗?哪儿有这种例外?
spacecraft原来有这个特点,谢谢TIANWAN。
中学英语中:条件状语从句,其主句是一般时或将来时,从句则用一般时,不用将来时。
我也没有见过 主句是一般现在,从句是将来时的例子。
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