3 Irregular Formal and Plural Commands Attach object and reflexive pronouns to the end of affirmative formal commands. A written accent mark may be required in order to maintain the original stress of the verb.
5 Suggesting what to do: nosotros commands Using a nosotros command allows you to suggest that others do some activity with you and is equivalent to saying “lets (do something)” in English. Form the nosotros command by substituting the -o of the present tense yo form of a verb with emos for most -ar verbs, or -amos for most -er and -ir verbs.
7 Talking about whom and what you know: conocer and saber Both verbs are irregular in the present tense.Use saber to talk about facts that someone may or may not know.Use conocer to discuss whether someone is familiar with (or acquainted with) people places or things.
8 Saber Conocer Sé Sabes Sabe Sabemos Sabéis Saben Conozco Conoces ConocemosConocéisConocen
9 Telling someone what not to do: negative commands The formation of a negative Ud. Or Uds. Command or a negative nosotros/ as command is the same as for an affirmative command, but with no before the verb. The negative nosotros/ as command for ir is one exception.