Sprachandragogik; Volkshochschule; Adult language teaching ; ELE; Español como segunda lengua; ELSE ; English as a second language; ESL; TESOL ; Frequency (synt.) ; Transfer (second language acquisition) ; Transfer (Zweitspracherwerb) ; Cross-linguistic influence (second language acquisition) ; Interference (second language acquisition) ; Kausativa; Antikausativa; Anticausative verbs; Causative verbs ; Unaccusativity; Unergativity; Labile verb; Ergative