Third conditional : If past perfect , Would have + past participle(과거분사) 1. 과거의 상황이 어떻게 달라졌을 지에 대해 말할 때 사용한다. for hypothetical(가상의)/ imaginary situations. Compare : Yesterday I got up late and missed my train. (=the real situation) If i hadn't got up late yesterday, I wouldn't have missed my train. (= the hypothetical or imaginary past situation) 2. If + past perfect(had + p.p), would(could, mig..