Español 2: Formal Commands (Ud. & Uds.)-- Mandatos formales
1) Remember that formal commands always start with the yo form of the present tense.
2)Drop the o, and add opposite endings to the stem of the verb (For "ar" verbs, add "e", and for "er" or "ir" verbs, add "a".
3) For Uds, commands, add an "n" to the ud, command.
4) If the sentence includes direct, indirect, or reflexive pronouns, attach these pronouns to the command if the command is affirmative. If the command is negative, place the appropriate pronouns before the command.