calentar Negative Imperative Conjugation
calentar — to heat up
Negative commands use the present subjunctive forms: no calientes, no caliente, no calentemos...
calentar Negative Imperative Forms
When to Use the Negative Imperative
Use this to tell someone NOT to heat something up, like 'Don't heat the milk too much.'
Notes on calentar in the Negative Imperative
It follows the exact same stem-changing rules as the present subjunctive (e to ie, but not in nosotros/vosotros).
Example Sentences
No calientes el plástico en el horno.
Don't heat plastic in the oven.
tú
No calentéis el agua todavía.
Don't heat the water yet.
vosotros
Common Mistakes
Mistake: No calienta la comida.
Correct: No caliente la comida.
Why: Negative commands must use the subjunctive, not the indicative 'a' ending.
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Related Tenses
Present
yo: caliento
Calentar has a stem change (e to ie) in all forms except nosotros and vosotros: caliento, calientas, calienta, calientan.
Preterite
yo: calenté
Calentar is completely regular in the preterite: calenté, calentaste, calentó, calentamos, calentasteis, calentaron.
Imperfect
yo: calentaba
Calentar is regular in the imperfect, using the standard -aba endings: calentaba, calentabas, calentaba...
Future
yo: calentaré
The future of calentar is regular: add the endings -é, -ás, -á, -emos, -éis, -án to the full infinitive.
Conditional
yo: calentaría
The conditional of calentar is regular: calentar +ía, -ías, -ía, -íamos, -íais, -ían.
Present Subjunctive
yo: caliente
The present subjunctive follows the 'ie' stem change: caliente, calientes, caliente, calentemos, calentéis, calienten.
Imperfect Subjunctive
yo: calentara
The imperfect subjunctive is regular based on the preterite: calentara, calentaras, calentara, calentáramos...
Affirmative Imperative
yo: calienta
The commands use the 'ie' stem change except for vosotros: calienta (tú), caliente (usted), calentad (vosotros).