| Form | tú: -ar verbs end in es, -er and -ir verbs in as | No hables tan alto. | Don't speak so loudly. |
| Form | usted / ustedes: the affirmative form after no | No fume aquí, por favor. | Please don't smoke here. |
| Form | vosotros: -ar verbs end in éis, -er and -ir verbs in áis | No habléis tan alto. | Don't speak so loudly. |
| Irregular verbs | the stem of the yo form: no digas / no hagas / no vengas | No digas eso. | Don't say that. |
| Pronouns | before the verb, after no | No lo toques. | Don't touch it. |
| Use | prohibitions and warnings | No toques el horno: está caliente. | Don't touch the oven: it's hot. |
| Use | advice and reassurance | No te preocupes. | Don't worry. |
| Trap | the negative never takes the affirmative form: ven → no vengas | No vengas tarde. | Don't come late. |
| Trap | the pronoun moves before the verb: siéntate → no te sientes | No te sientes ahí. | Don't sit there. |