( ( ( An object ) ( that ( is opaque ) ) ) ( , ( ( ( will not ) ( ( allow ( ( the rays ) ( of light ) ) ) ( to ( ( pass through ) ( at all ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (DT An) (NN object)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ opaque)))))) (, ,) (VP (MD will) (RB not) (VP (VB allow) (NP (NP (DT the) (NNS rays)) (PP (IN of) (NP (NN light)))) (S (VP (TO to) (VP (VB pass) (PRT (RP through)) (ADVP (IN at) (DT all))))))) (. .)))
An object that is opaque, will not allow the rays of light to pass through at all.
(ROOT (S (NP (NNP Opaque)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NN matter))) (SBAR (WHNP (WDT that)) (S (VP (VBZ does) (RB not) (VP (VB let) (NP (DT any) (JJ light) (NN pass)) (PRT (RP through)))))))) (. .)))