I wanted to ask the difference between "muss gut gewesen sein" and "musste gut sein". To put it in context, I was told
Das Konzert muss wirklich gut gewesen sein
So, I've three questions:
- How is this case of sentence called? "gewesen sein" sounds like passive but I didn't find any similar Passive examples, so I'm wrong on that.
- Is that equivalent to "The concert must have been good"?
- If I say "Das Konzert musste wirklich gut sein", Doesn't that mean that the concert had to be good? (Präteritum?) . Is this like asking the difference between "It had to be good" and "It must have been good"? I wouldn't know the answer to that one.