Is Grammar Important to Learn Spanish? Would they learn those conjugations and grammatical rules in an inductive way like children with thousands of hours of exposure to the language? Probably so. Does a student of Spanish have thousands of hours to learn Spanish in an inductive way like a child? Probably not. Would it be more effective for an upper intermediate student of Spanish to study the conjugation and other basic grammar rules to master them? Probably so. When you start learning a foreign language as Benny Lewis says it is probably more effective to devote your efforts to speak and learn a few basic grammar rules. However, later when you have already achieved an upper intermediate level that strategy doesn´t work so well. Advanced level For those who think that it is possible to master the Spanish language without touching the grammar, I would say that it is possible, but it takes longer