[일빵빵94] When did you

When did you here about it? 언제 들었어?
When did you listen to the radio? 언제 라디오 들었어?
When did you graduated from high school?

*When did you last~ 마지막으로 ~ 한게 언제야?
When did you last see him? 그를 언제 마지막으로 봤어?
*When did you first 처음으로 ~ 한게 언제야?
When did you first notice(=recognize) him? 처음으로 그를 언제 알아봤어?