You still do.
( You ( still ( do . ) ) )
(ROOT (S (NP (PRP You)) (ADVP (RB still)) (VP (VBP do)) (. .)))
You still haven't stopped.
( You ( still ( ( ( have n't ) stopped ) . ) ) )
(ROOT (S (NP (PRP You)) (ADVP (RB still)) (VP (VBP have) (RB n't) (VP (VBN stopped))) (. .)))