What is SLVC in grammar?

"SLVC" is not a standard abbreviation in grammar. It's possible you're thinking of a term that's used in a particular educational context or specific grammar system.

To help me understand what you mean, could you please provide more context? For example:

* Where did you encounter the term "SLVC"? (e.g., a textbook, a teacher's notes, an online resource)

* What was the context? (e.g., a lesson on sentence structure, verb types)

* Do you remember any other related terms or information?

With more information, I can help you figure out what "SLVC" refers to and its meaning in grammar.