'I saw him get aboard myself.
( ' ( I ( ( saw ( him ( get ( aboard myself ) ) ) ) . ) ) )
(ROOT (S ('' ') (NP (PRP I)) (VP (VBD saw) (SBAR (S (NP (PRP him)) (VP (VBP get) (PP (IN aboard) (NP (PRP myself))))))) (. .)))
I never saw him get on.
( I ( never ( ( saw ( him ( get on ) ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB never)) (VP (VBD saw) (SBAR (S (NP (PRP him)) (VP (VBP get) (PRT (RP on)))))) (. .)))