摘要：情态动词在虚拟语气中的用法 情态动词用于虚拟语气中表示责备的感情色彩.用法如下: (1)should have done表示“本来应该做某事而实际上未做 .而shouldn’t have done则表示“本不应该做某事而实际上做了 .如: You should have told me about it earlier. You shouldn’t have said such words to your parents. (2)ought to have done也表示“本应该-- 而ought not to have done则意为“本不应该-- .如: You ought to have told me about it earlier. You ought not to have said such words to your parents. (3)needn’t have done表示“本无必要做某事而实际上做了 .如: You needn’t have walked so quickly since time was enough. (4)could have done表示“本来有可能--而事实上未做到 .如: I could have come on time, but my car broke on the way.

网址：http://m.1010jiajiao.com/timu3_id_3137379[举报]