Q3:
Were it not for the fusion-powered heat and radiation that rush from its core, instead its own weight would cause a star to collapse.
- instead its own weight would cause a star to collapse
- instead a star would have collapsed under its own weight
- a star would have to be collapsing under its own weight
- a star would collapse under its own weight
- its own weight would have caused a star’s collapse
Answer: d
请问E怎么不对,是不是would have done 时态问题。还有能不能讲讲虚拟语气的时态问题。
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