Some informal commands in Spanish are irregular in the affirmative. These occur with the pronoun tú. These commands are: poner – pon, decir – di, hacer – haz, salir – sal, tener – ten, venir – ven, ser – sé, ir – ve. Below are some example sentences using each of these eight verbs.
Pon la mesa. (Set the table.)
Di la verdad. (Tell the truth.)
Haz la cama. (Make the bed.)
Sal de aquí. (Get out of here.)
Ten cuidado. (Be careful.)
Ven aquí. (Come here.)
Sé valiente. (Be brave.)
Ve a la casa. (Go to the house.)
I have created some review and practice materials using these commands for Teachers Pay Teachers. Spanish Irregular Informal Tú Commands is a 45 page booklet of worksheets and handouts. Spanish Affirmative Irregular Tú Commands Challenge Digital Boom Cards is an Internet activity that is available at both Teachers Pay Teachers and Boom Learning.