Use the present to describe what someone does, to ask questions, and to give instructions in written form (recipes, manuals often use the present: "se añade sal" — add salt).

Signal words: ¿tú hablas?él hablainstructions in manualspresente históricotodos los días
Pronoun Present
yo suspendo
suspendes
él/ella/Ud. suspende
nosotros suspendemos
vosotros suspendéis
ellos/ellas/Uds. suspenden

Use the imperative for direct commands and requests. Affirmative tú commands use the third-person present singular. Negative tú commands use the present subjunctive.

Signal words: ¡habla!¡no hables!instructions to a personpor favor¡ven aquí!
Pronoun Imperative
yo -
suspende
él/ella/Ud. suspenda
nosotros suspendamos
vosotros suspended
ellos/ellas/Uds. suspendan
Key contrast

"Hablas demasiado rápido" (present — you speak too fast, observation) vs "¡Habla más despacio!" (imperative — speak more slowly, command). The imperative tú form of regular -ar verbs equals the third-person present.

Present vs Imperative: common questions

How do I form affirmative tú commands in Spanish?

For most verbs, the affirmative tú imperative is identical to the third-person present singular: habla, come, escribe. There are 8 irregular forms: di, haz, ve, pon, sal, sé, ten, ven.

Why does the negative command use a different form?

Negative tú commands use the present subjunctive: "no hables", "no comas", "no escribas". This applies to all verbs including the irregular ones — "no digas", "no hagas", "no vengas".

Can the present tense be used as a command?

Yes — in informal speech, the present tense can soften a command: "¿Me pasas la sal?" (you pass me the salt?) is more polite than "¡Pásame la sal!" It is also common in written instructions.

Practise both tenses with suspender using spaced repetition.