Must have p.p is used to express certainty about the past. *과거를 단정적으로 추측할 때 must have pp를 사용합니다. (분명 ~였겠다. ~였음에 틀림없다.)ex)The killer must have driven her to Lauriston Gdns. 살인범은 분명 그녀를 Lauriston Gdns으로 몰고 갔어. We went to Paris last week. That must have been nice. (좋았겠당) must have pp 의 부정은 can't have pp를 씁니다. (~했을리가 없다.)ex)Do you know where Kate put my key? She can't have thrown it away. 케이트가 내..
