Vídeo original desta aula em produção.
Usar did/didn't sem repetir a marca de passado no verbo.
1Negativa: didn't + verbo base — I didn't go (nunca didn't went).
2Pergunta: Did + sujeito + verbo base? — Did you see the email?
3Respostas curtas: Yes, I did. / No, I didn't.