Second language acquisition (psycholing.) ; Third language acquisition ; Transfer (second language acquisition) ; Transfer (Zweitspracherwerb) ; Cross-linguistic influence (second language acquisition) ; Interference (second language acquisition) ; Inhaltswort; Content word; Open class word; Closed class word; Function word/Content word ; Personal pronoun ; Null subject; pro-drop; Subjectless clause ; English ; French ; Italian ; Spanish
