English as a second language; ESL; TESOL ; Feedback (language teaching) ; Rückmeldung (Sprachunterricht) ; Lehrerkommentar; Teacher's comment; Correction (in language teaching) ; Reformulation; Recast (function in discourse) ; Paraphrase (function in discourse) ; Second language acquisition (pragm.) ; Zweitspracherwerb (pragm.) ; Interactionist hypothesis (second language acquisition) ; Conversational analysis (second language acquisition) ; Possessivadjektiv; Possessive adjective; Possessivartikel; Possessive article; Possessive pronoun ; English