just ca n't tear himself away from the characters 
(ROOT (S (ADVP (RB just)) (VP (MD ca) (RB n't) (VP (VB tear) (NP (PRP himself)) (ADVP (RB away) (PP (IN from) (NP (DT the) (NNS characters))))))))
(ROOT (S (ADVP (RB )) (VP (MD ) (RB ) (VP (VB ) (NP (PRP )) (ADVP (RB ) (PP (IN ) (NP (DT ) (NNS ))))))))