Dentistry has been a part of my life for as long as I can remember.
( Dentistry ( ( has ( ( been ( ( a part ) ( of ( ( my life ) ( for ( as long ) ) ) ) ) ) ( as ( I ( can remember ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Dentistry)) (VP (VBZ has) (VP (VBN been) (NP (NP (DT a) (NN part)) (PP (IN of) (NP (NP (PRP$ my) (NN life)) (PP (IN for) (NP (QP (RB as) (JJ long))))))) (SBAR (IN as) (S (NP (PRP I)) (VP (MD can) (VP (VB remember))))))) (. .)))
Last year was when I was introduced to dentistry.
( ( Last year ) ( ( was ( when ( I ( was ( introduced ( to dentistry ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Last) (NN year)) (VP (VBD was) (SBAR (WHADVP (WRB when)) (S (NP (PRP I)) (VP (VBD was) (VP (VBN introduced) (PP (TO to) (NP (NN dentistry)))))))) (. .)))