could the action of the villian's raise on the flop have been based on sklansky's idea of semi-bluff raising? I have just started reading "theory of poker", and this seems to me, as a noob, to be a likely candidate?

villain calls hero's pre-flop raise w/suited connectors, 2 club paint, something like that? villain hits club draw on flop, hero bets top pair, villain raises on semi-bluff and hits club draw on turn. villain then checks his nuts, which seems to be a standard play to make hero bet top pair harder?

in this situation, I would also likely check, and consider laying down top pair to a river bet. right? wrong? please explain.