must have p.p. 설명 "…했던 게 틀림없다." 과거의 사실에 대한 강한 추측을 나타낼 때 사용하는 표현입니다. 예문 I must have done something to my wrist. It really hurts. (내 손목을 뭔가를 한 게 틀림없어. 몹시 아픈데) He must have forgotten that he was supposed to pick me up at lunchtime. (점심식사에 나를 데리고 가기로 했던 것을 잊은 게 틀림없어.) You must have made a lot of money. (돈을 많이 버셨겠네요?) Something must have happened to him. (그에게 무슨 일이 생긴 것이 틀림없어요.) He must have been sca..