Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; English as a second language; ESL; TESOL ; Ambiguity (theory of grammar) ; Ambiguität (Grammatiktheorie) ; Principles and parameters theory; Prinzipien- und Parametermodell; Parametrization ; Grammatizität; Grammaticalness ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; English
