He seemed a trifle embarrassed.
( He ( ( seemed ( ( a trifle ) embarrassed ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD seemed) (ADJP (NP (DT a) (RB trifle)) (JJ embarrassed))) (. .)))
He seemed a little bit embarrassed.
( He ( ( seemed ( ( a ( little bit ) ) embarrassed ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD seemed) (S (NP (DT a) (JJ little) (NN bit)) (ADJP (JJ embarrassed)))) (. .)))