虚拟语气例句对错:The rescue had arrived in time,otherwise they would have been frozen to death.

问题描述:

虚拟语气例句对错:The rescue had arrived in time,otherwise they would have been frozen to death.
原句是:The rescue arrived in time,otherwise they would have been frozen to death.
这表达的是跟过去相反的,那么前面应该是had+done.是不是原句错了呢?

前面The rescue arrived in time,是客观事实,并非虚拟.
otherwise 是隐含条件,= if it had not arrived in time...(虚拟在这里呢)
后面they would have ...是主句.
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