Der er meget glat?!

[MarkovV09]

Would a Dane say "Der er meget glat på vejene." instead of "Vejene er meget glat." or "Det er meget glat..."?

[arielkangaroo]

You could say all three but Vejene er meget glatte is most common.

[MarkovV09]

What difference is there between "Der er meget glat." and "Det er meget glat."?

[arielkangaroo]

Der er meget glat → More general. For example if I were sitting in my house talking to someone about the slippery roads outside, I'd say this.

Det er meget glat → Specific. For example, if I just washed the floors I would say this. Or if I'm referring to a specific road.