1. NB: the negative form uses the base form of the verb
   1. Eg: He drinks a lot of water. He doesn't drink a lot of water. (Not 'He doesn't drinks a lot of water)
      1. The verb 'to be' is irregular and uses 'not' instead of does or doesn't
         1. I am hungry. I am not hungry.
2. I / you / we don't
   1. Positive / Positivo
      1. I work / Trabajo
      2. You do / Tú sí
      3. We like / (A nosotros) nos gusta(n)
   2. Negative / Negativo
      1. I don't work / No trabajo
      2. You don't / Tú no
      3. We don't like / (A nosotros) no nos gusta(n)
3. He / she / it doesn't
   1. Positive / Positivo
      1. He has / (Él) tiene
      2. She likes / (A ella) le gusta
      3. It works / Funciona
   2. Negative / Negativo
      1. He doesn't have/ (Él) no tiene
      2. She doesn't like / (A ella) no le gusta(n)
      3. It doesn't work / No funciona