Imaginative play, Vygotsky noted, also functions as a bridge from the concrete thought of the preschool and early school years to mature  adult thought, which can be totally free of real situations. 
( ( Imaginative play ) ( ( , ( Vygotsky ( noted , ) ) ) ( ( also ( ( functions ( as ( ( a bridge ) ( from ( ( the ( concrete thought ) ) ( of ( the ( preschool ( and ( early ( school years ) ) ) ) ) ) ) ) ) ) ) ( to ( mature ( ( ( adult thought ) , ) ( which ( can ( be ( totally ( free ( of ( real situations ) ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (JJ Imaginative) (NN play)) (PRN (, ,) (NP (NNP Vygotsky)) (VP (VBD noted)) (, ,)) (VP (ADVP (RB also)) (VBZ functions) (PP (IN as) (NP (NP (DT a) (NN bridge)) (PP (IN from) (NP (NP (DT the) (JJ concrete) (NN thought)) (PP (IN of) (NP (DT the) (JJ preschool) (CC and) (JJ early) (NN school) (NNS years))))))) (S (VP (TO to) (VP (VB mature) (NP (NP (JJ adult) (NN thought)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD can) (VP (VB be) (ADJP (RB totally) (JJ free) (PP (IN of) (NP (JJ real) (NNS situations))))))))))))) (. .)))
Imaginative play also works as a connector to mature adult thought from childlike concrete thought.
( ( Imaginative play ) ( also ( ( works ( as ( a ( connector ( to ( ( mature ( adult thought ) ) ( from ( childlike ( concrete thought ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (JJ Imaginative) (NN play)) (ADVP (RB also)) (VP (VBZ works) (PP (IN as) (NP (DT a) (NN connector) (S (VP (TO to) (VP (VB mature) (NP (JJ adult) (NN thought)) (PP (IN from) (NP (JJ childlike) (JJ concrete) (NN thought))))))))) (. .)))