Yes. Language acquisition follows a standard sequence with specific milestones universal to all languages. For example, the period around 6-12 months is critica

Yes. Language acquisition follows a standard sequence with specific milestones universal to all languages. For example, the period around 6-12 months is critical for phonetic learning. Before 6 months, infants are able to discriminate between phonetic units present in any language, but after 12 months they are better at making distinctions that occur in their native language and worse at making distinctions that don't occur in their environment. For example, Japanese infants are just as good as American infants at distinguishing between r and l at birth, but lose some of this ability between 8-10 months. (Chapter "Language", Principles of Neural Science, 5th ed.)