Although the imperative conjugation has a form you’re already familiar with, there are some Italian verbs that have irregular forms for the familiar commands in the tu and voi forms (see the table below).

SECOND- AND THIRD-CONJUGATION

VERB IMPERATIVES
 
INFINITIVE
 TU
 VOI
 
andare (to walk)
 Va’!
 Andate!
 
avere (to have)
 Abbi!
 Abbiate!
 
dare (to give)
 Da’!
 Date!
 
dire (to say, to tell)
 Di’!
 Dite!
 
essere (to be)
 Sii!
 Siate!
 
fare (to make)
 Fa’!
 Fate!
 
sapere (to know)
 Sappi!
 Sappiate!
 
stare (to stay)
 Sta’!
 State!