虚拟语气例句对错:Therescuehadarrivedintime,otherwisetheywouldhavebeenfrozentodeath.
原句是:Therescuearrivedintime,otherwisetheywouldhavebeenfrozentodeath.
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?