I just learend the conditional and past subjunctive. Here is an example:
If I had a million dollars, I would buy a big house.
Si tuviera un millón dolares, compraría una casa grande.
So I'm just wondering how I would say it in present tense. A friend told me this:
If I have a million dollars, I will buy a big house.
Si tengo un millón dolares, compraré una casa grande.
If she is correct, why is it
tengo instead of
tenga? Aren't we expressing uncertainty/doubt here?