( ( During ( early childhood ) ) ( , ( ( ( ( ( ( the brain ) ( retains ( ( ( the ability ) ( to relearn ) ) ( sounds ( it ( has discarded ) ) ) ) ) ) , ) so ) ( ( young children ) ( typically ( learn ( ( new languages ) ( ( easily and ) ( without ( an accent ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN During) (NP (JJ early) (NN childhood))) (, ,) (S (NP (DT the) (NN brain)) (VP (VBZ retains) (SBAR (S (NP (NP (DT the) (NN ability)) (PP (TO to) (NP (NN relearn)))) (VP (VBZ sounds) (SBAR (S (NP (PRP it)) (VP (VBZ has) (VP (VBN discarded)))))))))) (, ,) (IN so) (S (NP (JJ young) (NNS children)) (ADVP (RB typically)) (VP (VBP learn) (S (NP (JJ new) (NNS languages)) (UCP (ADVP (RB easily)) (CC and) (PP (IN without) (NP (DT an) (NN accent))))))) (. .)))
During early childhood, the brain retains the ability to relearn sounds it has discarded, so young children typically learn new languages easily and without an accent.
(ROOT (S (NP (NNP Childhood)) (VP (VBZ is) (ADJP (ADJP (RB typically) (JJR easier)) (PP (IN for) (S (VP (VBG learning) (NP (JJ multiple) (NNS languages))))))) (. .)))