My wife and I were disagreeing about this today:
- Did you know Fred was a doctor?
- Did you know Fred is a doctor?
I was arguing for (1) based on what seemed to "sound right." My wife claimed that, since Fred is currently alive and still practicing medicine, present tense should be used. However, we agreed that the negation of these sentences uses was:
I didn't know Fred was a doctor.
Here I think everyone would agree that is would sound wrong!
So which is correct between (1) and (2)? And why? Is this some kind of subjunctive?