How do you say, "I might..." do something?
How do you deal with a possible future such as, "I might be able to come tomorrow night"?
I think that Marianne is on the right track with her answer (and Deanski, too). I will just make one quick addendum to what has already been said.
When you use quizás to mean "perhaps," you have the choice to use either the subjunctive or the indicative (as Marianne has provided you).
It comes down to degree of certainty:
1). Quizás podré venir... - Perhaps I will be able to come [it is likely]
2). Quizás pueda venir... - Perhaps I can come [it is much less certain]
1). Quizás volveré mañana - Perhaps I will come tomorrow [Likely that I will]
2). Quizás vuelva mañana - Perhaps I will come tomorrow [Much less certain]
Besides "Quizás" you could also use "tal vez"
Hi Bob. Welcome to the forum.
I'd say "Quizás puedo venir mañana por la noche."
The above suggestions are good, except that they have to use the subjuntivo, entonces Quizás pueda venir...
podría ser capaz de llegar mañana por la noche
Quizas puedo ven mañana por la noche. -Maybe I can come tomorrow night.
I'm thinking that's how you could phrase it. Anyone feel free to correct or offer other suggestions.