has really found his groove these days 
(ROOT (S (VP (VBZ has) (ADVP (RB really)) (VP (VBN found) (NP (PRP$ his) (NN groove)) (NP (DT these) (NNS days))))))
(ROOT (S (VP (VBZ ) (ADVP (RB )) (VP (VBN ) (NP (PRP$ ) (NN )) (NP (DT ) (NNS ))))))