Vídeo original desta aula em produção.
Usar don't e doesn't sem duplicar o -s.
1Negativa: I/you/we/they + don't + verbo. He/she/it + doesn't + verbo.
2Com doesn't, o verbo principal volta à forma base: She doesn't work (nunca doesn't works).
3Don't = do not; doesn't = does not.