Austria DLC (dominant language constellation) ELT (English language teaching) English as a Foreign Language English as a lingua franca English as an additional language English language instruction English learners FREPA LX English language teaching LX language learning New Zealand teacher education Norwegian teacher education code-switching comparative education cross-linguistic awareness home language initial teacher education language awareness language beliefs language education language repertoires language teacher cognition language teaching metalinguistic awareness minority language mother tongues multi-/plurilingual education multi-/plurilingualism multilingual learners