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Were it not for the adoption of the open policy,things _____

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Were it not for the adoption of the open policy,things ______ they are today.
A would never be B would never have been 为什么不能选A,有today难道不是错综时间虚拟条件句吗?
还有一题,也类似:
35.If we had known that she had planned to arrive today,we ______ her at the bus station.
A might met D might have met
选D,为什么不选A?
Were it not for the adoption of the open policy,things _____
1.Were it not for the adoption of the open policy,things ______ they are today.
A would never be B would never have been
选B
该题为虚拟语气,对过去的虚拟.
另外从句 were it 是if it were的省略.主句需用would/should+ have done
如果当初没有采取开放政策,事情(局面)不会是今天这样(已经发生)
2.If we had known that she had planned to arrive today,we_____her at the bus station.
选D
这是一个虚拟语气的句子,应该用虚拟语气特有的句型,即:
If+主语+had done,.would have done.这是过去虚拟的公式,
再问: 第一题的条件从句是对现在的虚拟吧,因为对过去的虚拟要用had been过去完成时,而第二句又是选对过去的虚拟,感觉好乱啊。还是不明白。。。
再答: 1.发展是一个持续的过程,从过去持续到现在 所以才会有:如果当初没有采取开放政策,事情(局面)不会是今天这样(已经发生) 今天只是发展的一个段落,发展并没有结束 2.如果你早知道她计划今天来,计划是发生在过去的。所以,在理解一下