A question about dance?

I dance a lot of different dances and I can always learn movements easily and I can move my body pretty good, but recently I noticed I'm not very good at dancing with the beat. Even if I sometimes do the movements better than the people I'm dancing with, I'm way off beat :S It's weird because I can find rhythm when I'm clapping and stuff like that, but I can't move to the beat? How do I get better at that?