( Gases ( ( have ( no ( definite ( ( volume or ) shape ) ) ) ) . ) )
(ROOT (S (NP (NNS Gases)) (VP (VBP have) (NP (DT no) (JJ definite) (NN volume) (CC or) (NN shape))) (. .)))
Gases have                    no definite volume or shape.
(ROOT (S (NP (NNP Gas)) (VP (VBZ has) (NP (NP (DT no) (JJ definite) (NN volume)) (CC and) (NP (DT no) (JJ definite) (NN shape)))) (. .)))
Gas has no definite volume and no definite shape.