If I had seen him yesterday,I would have told him the news.这是一道选择题,选主句成份,最后选would have told .答案给出的分析是:“条件从句用过去完成时,主句用would have done.”难道用should/could/might+have told 不可以?此题不是与过去相反的虚拟语气么?

问题描述:

If I had seen him yesterday,I would have told him the news.
这是一道选择题,选主句成份,最后选would have told .答案给出的分析是:“条件从句用过去完成时,主句用would have done.”
难道用should/could/might+have told 不可以?此题不是与过去相反的虚拟语气么?