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hecomelate,givehimthemessage.A.ShouldB.Would答案:Atoday,hewouldgettherebyFriday.A.WerehetoleaveB.Wouldheleave答案:A为什么两道题不用would?

题目详情
_____he come late,give him the message.A.Should B.Would答案:A_______today,he would get there by Friday.A.Were he to leave B.Would he leave答案:A为什么两道题不用would?
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答案和解析
第一句,是虚拟语气的一种,是对将来的一种虚拟,还原后,If he should come late,give him the message.第二局,是虚拟语气的一种,是用be 动词对现在情况的虚拟,还原为 if he were to leave,he would get there by friday.