Aimes-tu le thé ?
English: Do you like tea?
French does not use a direct equivalent of 'do' as a helper for negatives and questions. Instead, negatives use ne ... pas, and questions use inversion or est-ce que.
Use ne ... pas for negatives, and est-ce que or inversion for basic questions.
Aimes-tu le thé ?
English: Do you like tea?
Elle ne travaille pas ici.
English: She does not work here.
Ils ne jouent pas aujourd'hui.
English: They do not play today.
Parle-t-il anglais ?
English: Does he speak English?