yeah i've always threatened to take lessons but i've never gotten around to it
( yeah ( ( ( i ( ( 've always ) ( threatened ( to ( take lessons ) ) ) ) ) but ) ( i ( ( 've never ) ( ( gotten around ) ( to it ) ) ) ) ) )
(ROOT (S (VP (VB yeah) (SBAR (S (S (NP (FW i)) (VP (VBP 've) (ADVP (RB always)) (VP (VBN threatened) (S (VP (TO to) (VP (VB take) (NP (NNS lessons)))))))) (CC but) (S (NP (FW i)) (VP (VBP 've) (ADVP (RB never)) (VP (VBN gotten) (PRT (RP around)) (PP (TO to) (NP (PRP it)))))))))))
I threaten my wife to take lessons on how to cook so that she can't cook anymore. 
( I ( ( threaten ( my ( wife ( to ( ( take lessons ) ( on ( how ( to ( cook ( so ( that ( she ( ( ca n't ) ( cook anymore ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP threaten) (NP (PRP$ my) (NN wife) (S (VP (TO to) (VP (VB take) (NP (NNS lessons)) (PP (IN on) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB cook) (SBAR (RB so) (IN that) (S (NP (PRP she)) (VP (MD ca) (RB n't) (VP (VB cook) (ADVP (RB anymore)))))))))))))))) (. .)))