Can I help you?'
( ( ( ( Can I ) ( help you ) ) ? ) ' )
(ROOT (SQ (MD Can) (NP (PRP I)) (VP (VBP help) (NP (PRP you))) (. ?) ('' ')))
I'm not helping you at all.
( I ( ( ( 'm not ) ( ( helping you ) ( at all ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 'm) (RB not) (VP (VBG helping) (NP (PRP you)) (ADVP (IN at) (DT all)))) (. .)))