The imperative is the command form in Spanish, we use it to give instructions, orders and to tell people what to do or not to do.

The “yo” form does not exist in the imperative.
Most commonly used forms are the “tú” informal and “Usted” formal.

The formal commands are formed the same way as the present subjunctive:
Start with the yo form of the present indicative.
Then drop the -o ending.
Add the appropriate ending:

  -AR -ER -IR
Tú -a -e -e
Él/Ella/Usted -e -a -an
Nosotr@s -emos -amos -amos
Vosotr@s -ad -ed -id
Ell@s/Ustedes -en -an -an

Remember, if the first person singular (yo) form is irregular, it will also be irregular in the formal command, just like the present subjunctive. This will also apply to stem changing verbs.
E.g. Escribid – you (plural, informal) write.
Tome – you (polite, singular – Usted) take.

In the informal tú commands there are some irregular conjugations, you can use an acronym to help you remember it:
Vin Diesel has ten weapons: VEN DI SAL HAZ TEN VE PON SÉ.

Ven = venir
Di = decir
Sal = salir
Haz = hacer
Ten = tener
Ve = ver
Pon = poner
Sé = Ser

When you use the Usted form, you can also use the pronoun to add another level of respect or formality to the command.

For the negative form of the imperative you will use the present subjunctive forms for all the conjugations.
No + subjunctive
E.g. no hables – don’t speak (tú form)
No coman – don’t eat (Ustedes form)