Language teaching ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; English as a second language; ESL; TESOL ; Kulturvergleich; Language and culture ; Stereotype ; Type of discourse; Text types ; Einführung (Textsorte) ; Introduction (text type) ; Arbeitsbuch (Textsorte) ; Course book (text type) ; Workbook (text type) ; Übungsbuch (Textsorte) ; Textbook (text type) ; English