Is it
It is possible that several rules be matched by visiting a node
Or
It is possible that several rules are matched by visiting a node
In Persian, after "its possible that" a subjunctive form is used, I want to know if it is the case of English too or not?
Best Answer
As Robusto says, this is grammatical, but slightly more formal. It's not a common construction, and I would recommend against using it in an academic paper, but it can be used for fun to say something ordinary in a different way.
As a side note: The subjunctive can be used if you want to sound like a pirate:
Why "pirate talk" sounds like that