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题库 / Prep2007E2-SC-111
Astronomers have uncovered evidence that a star that was as bright as the full moon exploding into view 340,000 years ago, emitting dazzling radiation that could have disrupted Earth's protective ozone layer and sunburned our Stone Age ancestors.
that a star that was as bright as the full moon exploding into view 340,000 years ago, emitting
that a star as bright as the full moon exploded into view 340,000 years ago, emitting
of a star that was as bright as the full moon exploding into view 340,000 years ago and that it emitted
of a star as bright as the full moon, exploding into view 340,000 years ago and emitting
of a star as bright as the full moon that exploded into view 340,000 years ago and that emitted
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句子结构：Astronomers have uncovered evidence that…为句子主结构(第一层次)。 That引导从句解释evidence的内容，为第二层次。从句内部主结构为: a star exploded into… emitting 现在分词位于句尾，用逗号(;)与前句隔开，作为伴随状语修饰前句，逻辑主语与前句主语相同， 为star。伴随状语部分that引起限定性定语从句(第三层次)修饰radiation，该定语从句内部两个动词 要求平行：could have disrupted and sunburned….
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