Could +have done在肯定陈述句中能表示对过去事情的推测吗

could have done能不能表示对过去事实的猜测用在肯定句中?与must have done may have done might have done Could +have done在肯定陈述句中能表示对过去事情的推测吗 could never have done could not have done Could have done would have done should have done could have been done ,could have could have done可以表示对过去的推测吗?肯定句中 could never have done 造句 how could you have done 情态动词+have done 如 could have done,must have done,should have done 等等在如他么的否定词表示什么意思? would have done,might have done,could have done,should have done分别表示什么意思? should have done ,shouldn't have done.could have done,couldn't have done could have done和need have could have done和would have done的区别 should have done和could have done的区别? 高中英语中might have done 和could have done 英语：should have done与could have done区别? could have done 和 might have done 的区别