I felt like a rat.
( I ( ( felt ( like ( a rat ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD felt) (PP (IN like) (NP (DT a) (NN rat)))) (. .)))
I was upset with myself and felt bad.
( I ( ( was ( ( ( upset ( with myself ) ) and ) ( felt bad ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD was) (VP (VP (VBN upset) (PP (IN with) (NP (PRP myself)))) (CC and) (VP (VBN felt) (S (ADJP (JJ bad)))))) (. .)))