have forgotten everything he ever knew about generating suspense 
(ROOT (S (VP (VBP have) (VP (VBN forgotten) (NP (NP (NP (NN everything)) (SBAR (S (NP (PRP he)) (ADVP (RB ever)) (VP (VBD knew))))) (PP (IN about) (S (VP (VBG generating) (NP (NN suspense))))))))))
(ROOT (S (VP (VBP ) (VP (VBN ) (NP (NP (NP (NN )) (SBAR (S (NP (PRP )) (ADVP (RB )) (VP (VBD ))))) (PP (IN ) (S (VP (VBG ) (NP (NN ))))))))))