Lesson 30: Negative imperative. "Don't do that!", signs and prohibitions

Vocabulary: prohibitions, warnings, safety, signs on signposts

How to work with this lesson

  1. Read — understand the rule (5 minutes, no more!)
  2. Say it out loud — slowly, consciously, drilling the "ending flip"
  3. Speed up — repeat the "do / don't do" pairs until the switch is automatic

In Lesson 29 you learned how to give orders: ¡habla!, ¡come!, ¡ven!. Easy. But the moment you need to say "don't speak", "don't eat", "don't come" — Spanish swaps the form on you. And it swaps it for the form called the subjunctive (subjuntivo). Think of this lesson as smuggling: the subjunctive is sneaking into your speech right now, through negative commands, so that in Lesson 31 it won't feel like a stranger.


Part 1: The frame for English speakers

In English, going from a command to a negative command is dead simple. You take "Eat!" and slap "don't" in front of it: "Don't eat!". Same verb form, just a "don't". One verb shape covers both directions.

Spanish doesn't work that way. The affirmative command and the negative command are two different verb forms for the same person.

EnglishSpanish affirmativeSpanish negative
Speak! / Don't speak!¡Habla!No hables.
Eat! / Don't eat!¡Come!No comas.
Live here! / Don't live here!¡Vive aquí!No vivas aquí.
Tell me! / Don't tell me!¡Dime!No me digas.
Get up! / Don't get up!¡Levántate!No te levantes.

Two things flip:

  1. The ending changes. -ar verbs that ended in -a now end in -es. -er/-ir verbs that ended in -e now end in -as. The vowels swap.
  2. Pronouns move. They were stuck to the back of the verb (dímelo, levántate). Now they pop out and stand in front of the verb (no me lo digas, no te levantes).

For English speakers, "no me lo digas" reads backwards: "not to-me it tell." Three little words in front of the verb, in a fixed order, and the verb shape is one you've never seen before. That's the part that needs drilling.


Part 2: The main rule

All negative commands — for every person (, usted, nosotros, vosotros, ustedes) — use the present subjunctive. Affirmative command = one form. Negative command = a completely different form.

Compare:

AffirmativeNegative
¡Habla! — Speak!No hables. — Don't speak.
¡Come! — Eat!No comas. — Don't eat.
¡Vive aquí! — Live here!No vivas aquí. — Don't live here.
¡Ven! — Come!No vengas. — Don't come.
¡Sal! — Get out!No salgas. — Don't go out.
¡Haz! — Do it!No hagas. — Don't do it.
¡Di! — Say!No digas. — Don't say.
¡Da! — Give!No des. — Don't give.
¡Ve! — Go!No vayas. — Don't go.
¡Sé bueno! — Be good!No seas malo. — Don't be bad.

Key insight: in the affirmative, the command looks like the 3rd-person singular of the present tense (habla, come, vive). In the negative, the endings swap vowels: -ar verbs take endings with e, -er/-ir verbs take endings with a. That's the subjunctive.


Part 3: How to build the form — the "yo-form → opposite vowel" recipe

The algorithm works for any verb, with only a handful of exceptions.

Step 1. Take the verb in the 1st person of the present (the yo-form). Step 2. Drop the -o ending. Step 3. Add the ending with the opposite vowel: – -ar verbs → endings with -e-er / -ir verbs → endings with -a

-AR verbs (endings in -e)

Personhablar (yo hablo → habl-)
no hables
ustedno hable
nosotrosno hablemos
vosotrosno habléis
ustedesno hablen

-ER / -IR verbs (endings in -a)

Personcomer (yo como → com-)vivir (yo vivo → viv-)
no comasno vivas
ustedno comano viva
nosotrosno comamosno vivamos
vosotrosno comáisno viváis
ustedesno comanno vivan

The yo-form recipe also works for irregular verbs — because the irregularity of the yo-form carries over into the command.

Irregular verbs — the yo-form decides everything

Verbyo-formno … (tú)no … (ustedes)
tener (to have)tengono tengasno tengan
venir (to come)vengono vengasno vengan
salir (to leave)salgono salgasno salgan
hacer (to do)hagono hagasno hagan
decir (to say)digono digasno digan
poner (to put)pongono pongasno pongan
traer (to bring)traigono traigasno traigan
oír (to hear)oigono oigasno oigan
conocer (to know)conozcono conozcasno conozcan

Five "real" exceptions — memorize as a list

These don't come from the yo-form. Their subjunctive has to be learned cold:

Verbno … (tú)no … (usted)no … (nosotros)no … (vosotros)no … (ustedes)
dar (to give)no desno no demosno deisno den
estar (to be / to be located)no estésno esténo estemosno estéisno estén
ir (to go)no vayasno vayano vayamosno vayáisno vayan
saber (to know)no sepasno sepano sepamosno sepáisno sepan
ser (to be)no seasno seano seamosno seáisno sean

Trap: ir in the affirmative is ¡vé!, but in the negative no vayas. Total stem change. Same with ser: ¡sé bueno!no seas malo. The affirmative and negative don't even share a root.


Part 4: Pronouns "move" — the headline difference from the affirmative command

In Lesson 29 you nailed this: in an affirmative command, the pronouns stick to the back of the verb: ¡dímelo!, ¡levántate!, ¡dénselo!.

In the negative command, everything flips: the pronouns jump to the front, standing as separate words before the verb.

Affirmative (after, attached)Negative (before, separate)
¡Dímelo! — Tell me it!No me lo digas. — Don't tell me it.
¡Levántate! — Get up!No te levantes. — Don't get up.
¡Cómpralo! — Buy it!No lo compres. — Don't buy it.
¡Dáselo! — Give it to him!No se lo des. — Don't give it to him.
¡Vete! — Go away!No te vayas. — Don't go away.
¡Siéntense! — Sit down!No se sienten. — Don't sit down.
¡Háganlo! — Do it!No lo hagan. — Don't do it.

Memorize the schema: Affirmative: VERB + pronoun (one word, often with a written accent) → cómpralo Negative: no + pronoun + VERB (separate words, no accent) → no lo compres

English-speaker note: in English, "Don't tell me!" keeps "me" in roughly the same slot — after the verb. Spanish moves the pronoun across the verb when you flip the polarity. The phrase no me lo digas literally reads "not to-me it tell" — three little words stacked in front of the verb, in a fixed order. Drill this exact phrase. It's the canonical example.

Pronoun order — same as everywhere else

If there are two pronouns, the order is the usual one: se → te/me → lo/la/los/las.

  • No me lo digas. — Don't tell me it.
  • No te lo comas. — Don't eat it (up).
  • No se lo des. — Don't give it to him.
  • No nos lo pidan. — Don't ask us for it.

Reflexive verbs

  • levantarse → no te levantes / no se levante / no nos levantemos / no os levantéis / no se levanten
  • preocuparse → no te preocupes / no se preocupe — Don't worry / Don't worry (formal).
  • irse → no te vayas / no se vaya — Don't leave / Don't leave.
  • quedarse → no te quedes — Don't stay.
  • acostarse → no te acuestes — Don't go to bed.

Next up: Lesson 31 — the present subjunctive (subjuntivo) in its full glory. You already know the forms — we smuggled them in through negative commands. What's left is learning to use them in subordinate clauses: Quiero que vengas ("I want you to come"), Espero que sea verdad ("I hope it's true"), No creo que tenga razón ("I don't think he's right"). The "WEIRDO" mood begins.

Lesson 30: Negative imperative. "Don't do that!", signs and prohibitions · Español · Glottos Matrix