Tú Commands
Affirmative tú commands have the same form as the usted form of present indicative
Negative tú commands have the same form as the tú in the present subjunctive
affirmative-
ar- a, er- e, ir- e
negative -
ar- es, er- as, ir- as
irregular
decir- di, hacer- haz, ir- ve, poner- pon,
salir- sal, ser- sé, tener- ten, venir- ven
pronoun placement
affirmative: attached to the end of the verb: dímelo todo.
negative: between no and verb: no me lo digas.