Magst du Tee?
English: Do you like tea?
German does not use 'do' as a helper verb for negatives and questions. Instead, word order or 'nicht/kein' is used.
Form questions by moving the verb to the first position. Use 'nicht' or 'kein' for negatives.
Magst du Tee?
English: Do you like tea?
Sie arbeitet nicht hier.
English: She does not work here.
Sie spielen heute nicht.
English: They do not play today.
Spricht er Englisch?
English: Does he speak English?