关于虚拟语气与现在事实相反 主句是should would could might +do 那要是被动语态呢?还有与过去事实相反 主句又变成什么样?
问题描述：
关于虚拟语气
与现在事实相反 主句是should would could might +do 那要是被动语态呢?还有与过去事实相反 主句又变成什么样?
答
被动语态should would could might +be +done
与过去事实相反should would could might+have+done
答
should would could be +done
As Commander-in-Chief of the armed forces,I have directed that all measures ________ for our defence
A.had been taken B.would be taken C.be taken D.to be taken
〔译文〕我作为武装部队的总司令命令采取一切措施进行防御。
〔简析〕direct(相当于order)为表示主观要求、提议、命令的词，其后的宾语从句中用"(should +)原形动词"表示虚拟。故正确答案为C。
答
SHOULD WOULD COULD MIGHT +BE DONE
过：SHOULD WOULD COULD MIGHT +HAVE DONE
它的被动是SHOULD WOULD COULD MIGHT +HAVE BEEN DONE