Could you have been more careful Why ,what wrong__I__?A.did do B.will do C.have done D.had done 请选择,并加以解释.
问题描述:
Could you have been more careful Why ,what wrong__I__?
A.did do B.will do C.have done D.had done
请选择,并加以解释.
答
答案应该是Ccould have done 是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做 应该用现在完成时,表示过去发生的事情对现在的影响.不选D的理由是,本句中并没有一个过去的过去的概念,没有一个过去的时...