Negativas com don't e doesn't

En inglés, en simple present, no puedes simplemente poner not delante del verbo como hacemos con "no" en español. Necesitas el auxiliar do/does + not:

• I/you/we/they → do not = don't
• he/she/it → does not = doesn't

Afirmación	Negativa
I live here.	I don't live here.
She speaks Spanish.	She doesn't speak Spanish.
We have time.	We don't have time.

Como en las preguntas: con doesn't, el verbo principal pierde la -s: She doesn't speak (no speaks).

Excepción: el verbo to be. Sin don't/doesn't — basta con not después del to be:

• I am not tired. (o I'm not tired.)
• Marina is not at home. (o Marina isn't at home.)

Ejercicio