Command forms in Spanish may be challenging because they differ depending on five possible intervening factors:

	·whether the command is given informally (with "tú") or formally (with "usted")
	·whether the command is negative or positive
	·whether the command is given to one person or many people
	·whether the verb is reflexive
	·whether there are direct or indirect object pronouns

Each of these five factors can be mixed together to create a wide variety of possibilities.

To form postive formal commands, start with the form of the verb that goes with the pronoun "yo" (e.g., abro, muevo, vengo, etc.). Then take the "-o" off of that verb ending. If the verb is an AR verb, replace the "-o" with "-e" If the verb is an ER or IR verb, replace the "-o" with "-a" If the command is given to more than one person, the endings are "-en" and "-an" respectively. If the verb is reflexive, put the reflexive pronoun "se" after the verb form. If there are object pronouns (it, them) put them after the verb too. The following examples help to clarify.

Examples:

	INFINITIVE	"YO" FORM	SINGULAR	PLURAL
	acostarse "to lie down"	me acuesto	acuéstese	acuéstense
	calmarse "to be calm"	me calmo	cálmese	cálmense
	escribir "to write'	escribo	escriba	escriban
	explicar "to explain'	explico	explique	expliquen
	sentarse "to sit down'	me siento	siéntese	siéntense

Note: There are some irregular forms as well because the "yo" form does not end in an "-o" as follows:

	dar "to give"	doy	dé	dén
	estar "to be"	estoy	esté	estén
	irse "to go away"	voy	váyase	váyanse
	saber "to know"	sé	sepa	sepan
	ser "to be"	soy	sea	sean

The negative formal commands are similar to the positive ones. The difference is that the word "no" goes before the verb and reflexive pronouns and object pronouns also go before the verbs.

	No escriba.
	No se calme.
	No se vaya.

Given the difficulty and the variety of direct command forms, one solution is to use indirect command forms. These are easier to form and do not involve as many choices. There are three phrases that are helpful in giving indirect commands: "hay que..." (one must), "favor de..." (please do the favor of...) and "usted tiene que...." (you have to...). Each of these phrases is followed by a verb in the infinitive. As such, it is not necessary to know the verb conjugation. Be aware, however, sometimes the regular command form sounds much better.

Examples:

	Hay que escucharme primero.	You must listen to me first.
	Hay que explicar todo.	You must explain everything.
	Hay que levantar el pie.	You must raise your foot.
	Favor de mostrarme los papeles.	Do the favor of showing me the papers.
	Favor de ayudarme con esto.	Do the favor of helping with this.
	Usted tiene que sacar las manos.	You have to take your hands out.
	Usted tiene que dejarlo aquí.	You have to leave it here.
	Usted tiene que salirse ya.	You have to go away now.