Se utiliza Do / Does para hacer preguntas en PRESENTE
Para las preguntas en PASADO se utiliza Did
Do + I / you / we / they + VERBO +..... - Do you speak English?
- Do you study with La Mansin del Ingls? Does + he / she / it + VERBO +..... - Does she speak English?
- Does he study with La Mansin del Ingls?
He studies with La Mansin del Ingls. Does he study(NO studies) with La Mansin del Ingls?.
Para contestar: Yes, he does / No, he doesn't(NOYes, he study)
Did se utiliza para el pasado.
- Did you speak (NOspoke) English?
- Did she speak (NOspeaks ni spokes) English?