"si...." and subj. in present tense
There was a post posted about not using subj. in the present tense. However What about this sentence which "cogumela" corrected for me" and turned aprendas into aprendes
Si dibujas mucho aprendes a ver las cosas de una forma distinta
Confused a bit.
the last post was refering to whether or not you use subj. here
Creo que lo hago - creo que lo haga
2 Answers
There are two kind of "si", if you want to call them that. One of them is the equivalent of "whether", and it does not inform of what happens if the answer is yes or not, as in "No sé si vendrá" (I won't know whether he'll come). This one actually accepts the present subjunctive, but it is so comparatively unusual, that even educated native speakers see the present subjunctive as a grammatical mistake here. My advice is that you avoid it, but be aware that its use is not impossible.
The other "si" is more common, and you are expected to say what will happen if the condition becomes true, as in "Si vienes, te invito". Here, the condition is conceived as a perfectly objective and real possibility, to the point that it is declared with several tenses in indicative. If the condition is seen as impossible to be declared, because it never happened or it is not likely to happen (or it is not conceived as such), you use past subjunctive tenses (i.e. imperfect and pluperfect subjunctive).
Summing up: if the condition can happen, use indicative. If the condition is unreal or hypothetical, use past subjunctive tenses. There are rare cases where present subjunctive can be used afer "si", but leave them until you are fluent. Many natives have never seen them before.
Si dibujas mucho aprendes... = I you/one draws a lot, you/one lear(s)... (General statement)
Si dibujas mucho aprenderás... = I you draws a lot, you will lear... (Prediction)
In case you think that you have been hoodwinked:
Reminders/tips
- The present subjunctive is NOT used after si (if)!
When cogumela turned aprendas into aprendes she was changing from present subjunctive to present indicative.
[dibujas is present indicative; it is not violating the present subjunctive rule after if]