He had never felt better.
( He ( ( ( had never ) ( felt better ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD had) (ADVP (RB never)) (VP (VBN felt) (ADVP (RBR better)))) (. .)))
He felt very sick.
( He ( ( felt ( very sick ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD felt) (ADJP (RB very) (JJ sick))) (. .)))