This year I have been teaching introductory geology laboratories.
( ( This year ) ( I ( ( have ( been ( teaching ( introductory ( geology laboratories ) ) ) ) ) . ) ) )
(ROOT (S (NP (DT This) (NN year)) (NP (PRP I)) (VP (VBP have) (VP (VBN been) (VP (VBG teaching) (NP (JJ introductory) (NN geology) (NNS laboratories))))) (. .)))
I've been teaching labs for introductory geology this year.
( I ( ( 've ( been ( ( ( teaching labs ) ( for ( introductory geology ) ) ) ( this year ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP 've) (VP (VBN been) (VP (VBG teaching) (NP (NNS labs)) (PP (IN for) (NP (JJ introductory) (NN geology))) (NP (DT this) (NN year))))) (. .)))