Representation (of time) ; Time (notion of) ; Syntactic development; Morphological development; Morphologie (Spracherwerb) ; Syntax (Spracherwerb) ; Grammatical development ; Spracherwerb und neurologische Entwicklung; Language acquisition and neurological development; Sprache und Denken (Ontogenese) ; Language and thought (ontogenesis) ; Cognitive development; Language acquisition and cognitive development ; Aspect (morph.) ; Tense (morph.) ; Passé composé; Passato prossimo; Present perfect ; Japanese