Spanish language Q&A Forum

I understand that no articles are used in negatives 

e.g no hay tienda

Therefore, I am asking whether you would also drop the article in this sense?

e.g hay el de rojo--> no hay de rojo?

I had searched for “Subjunctive” and came across something entitled “It’s complicated explaining the Subjunctive”. It seemed to be what I was looking for, so I clicked on it. However, I was taken to a lesson on facíl/difícil. Can you correct the link? Basically, I’m trying to mover beyond the long list of situations requiring the mood, and understand the underlying principle(s). Somewhere I saw an article making a distinction between the informational and the intentional. Would you have any references covering this question?   Thanks very much.  John Nolan

Many years ago in a Mexican Spanish school I was taught that in a sentence like.  No creo que Susana venga/haya venido hoy only those 2 options are correct. The imperfect and pluperfect subjunctive are only used if the verb in the main clause is in a past tense. There seems to be disagreement on this topic. What does RAE say?  Is there regional variation on this topic?