Ordens - Orders
Is it just me or does anyone else have a mental block on this?
Tu come no comas Usted coma no coma Ustedes coman no coman
Why is that so hard to remember? !
4 Answers
El enlace de Kiwi es muy bueno... 
Trata de practicar el orden por escribir las conjugaciones mucas muchas veces, hasta que las sepas perfectamente.
Recuerda que la forma tú es la sola forma que cambia entre positivo y negativo:
Tú positivo = 3rd person indicative ¡Come!
Tú negativo = 2nd person subjunctive ¡No comas!
Las formas Usted y Ustedes no cambian, no importa si tienes la forma positiva ni la forma negativa, siempre se usa el subjuntivo.
Usted pos o neg= 3rd person subjunctive. ¡Cómala! ¡No me lo diga!
Ustedes pos o neg = 3rd person plural subjunctive ¡No digan nada!
This helped me while learning, I learned it by saying that the normal standard for commands uses the subjunctive form, but the Tú positive commands are the only irregular which thake the indicative.
A little confusing if I explained it the way I did, but the order will come with time, I promise.
Perhaps this lesson might help 
Giving commands - The Imperative Mood
I have a mental block about this, too. I have resigned myself to just learning them one my one, individually.
This is great. Thank you. I have got it now.
Todos son en el subunctivo, y el positivo y el negativo por usted / usted no cambian, y la uniqua que no es subunctivo es tu positivo y esa usa la trecera persona indicativ
