all it 的指代问题(同时涉及句子成分如何划分)

Research has shown that domestic cats and their feral counterparts are capable of huge impacts to bird populations—one house cat and its offspring were purportedly all it took to push a bird that lived only on Stephens Island in New Zealand into extinction.

这句话中破折号后面的一句,one house cat and its offspring were purportedly all 是什么意思呢?it took to ...在句子做什么成分?谢谢。

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最佳答案 2018-09-14 09:39

Research has shown that domestic cats and their feral counterparts are capable of huge impacts to bird populations—one house cat and its offspring were purportedly all that it took to push a bird that lived only on Stephens Island in New Zealand into extinction

主句主语:research

主句谓语:has shown

主句宾语:that domestic cats and their feral counterparts are capable of huge impacts to bird populations

同位语:one house cat and its offspring were purportedly all省略关系代词that it took to push a bird that lived only on Stephens Island in New Zealand into extinction


it took to ...为定语从句修饰前面先行词"all"

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  • wenwen 提出于 2018-09-13 10:33

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