Answer:
In Spanish, there are three verbal moods: the indicative, the subjunctive and the imperative.
The Imperative is used by the speaker to give orders, requests, and advice to one or more people directly. It is also used to exhort, incite or send another person to do something.
The forms of imperative in Spanish exist for all the personal pronouns except the 1st person in singular Yo (I).
In addition, note that for its conjugation the imperative is written without the personal pronoun and in present tense.
Knowing this, let’s write the following phrases in imperative:
1. Tú eres simpático (You are nice)
Imperative:
Sé simpático
Be nice
Note in the first sentence the verb ser (to be) is conjugated in present (indicative) with the 2nd person in singular tú (you), as eres (you are); while in the second sentence we have the same the 2nd person in singular in present, but in imperative as sé.
2. Me lo das (Give it to me)
Imperative:
Da
Give it to me
Note in the first sentence the verb dar (to give) is conjugated in present (indicative) with the 2nd person in singular tú (you), as das (you give); while in the second sentence we have the same the 2nd person in singular in present, but in imperative as da.
3. Uds. se despiertan (You wake up)
Imperative:
Despierten
Wake up
Note in the first sentence the verb despertar (to wake up) is conjugated in present (indicative) with the 2nd person in plural ustedes (you), as despiertan (you wake up); while in the second sentence we have the same the 2nd person in plural in present, but in imperative as despierten.