čuditi

1. (čuditi + acc.) to surprise; to amaze
   Njen uspeh me uopšte ne čudi. — Her success doesn't surprise me at all.
   Čudi me što se još nije javio. — I'm surprised he hasn't called yet.
2. (čuditi se + dat.) to be surprised; to wonder at
   Stalno se čudim koliko su cene porasle. — I keep being amazed at how much prices have gone up.
   Svi su se čudili njegovoj hrabrosti. — Everyone marveled at his courage.

Construction čuditi nekoga: the cause of surprise is the subject and the surprised person takes the accusative (njen uspeh me čudi); the subject is often a clause: čudi me što... Reflexive čuditi se takes the dative (čuditi se nečemu).