My grandmom was pretty much a chain smoker.
( ( My grandmom ) ( ( ( was ( pretty much ) ) ( a ( chain smoker ) ) ) . ) )
(ROOT (S (NP (PRP$ My) (NN grandmom)) (VP (VBD was) (ADVP (RB pretty) (RB much)) (NP (DT a) (NN chain) (NN smoker))) (. .)))
My grandma never smoked. 
( ( My grandma ) ( never ( smoked . ) ) )
(ROOT (S (NP (PRP$ My) (NN grandma)) (ADVP (RB never)) (VP (VBD smoked)) (. .)))