# SLA Canonical URL: https://shipslides.com/d/languages-second-language-acquisition Raw HTML URL: https://content.shipslides.com/d/languages-second-language-acquisition/raw Category: Languages Slides: 30 Updated: 2026-05-15T22:18:29.272Z Tags: languages, second, language, acquisition ## Summary Most adults who try to learn a second language do not become fluent. The exceptions are interesting; the rule is sobering. Key sections include: Second Language.; Opening Why second-language learning is hard.; Chapter I The Lenneberg hypothesis.; Chapter II The input hypothesis.; Chapter III The natural method.; Chapter IV The classroom.; Chapter V What's different.; Chapter VI The exceptions.; Chapter VII The audio method.; Chapter VIII Spaced repetition.. ## Slide Outline 1. Second Language. 2. Opening Why second-language learning is hard. 3. Chapter I The Lenneberg hypothesis. 4. Chapter II The input hypothesis. 5. Chapter III The natural method. 6. Chapter IV The classroom. 7. Chapter V What's different. 8. Chapter VI The exceptions. 9. Chapter VII The audio method. 10. Chapter VIII Spaced repetition. 11. Chapter IX The mass-market app. 12. Chapter X The 2020s shift. 13. Chapter XI The new frontier. 14. Chapter XII Speaking. 15. Chapter XIII The accent question. 16. Chapter XIV The numbers game. 17. Chapter XV The rich path. 18. Chapter XVI Two skills. 19. Chapter XVII Difficulty. 20. Chapter XVIII The largest variable. 21. Chapter XIX The complicated case. 22. Chapter XX The policy fight. 23. Chapter XXI Revitalisation. 24. Chapter XXII Where it's going. 25. Chapter XXIII Twenty-five works. 26. Chapter XXIV Watch & read. 27. Chapter XXV If you want to learn it. 28. Chapter XXVI Why it matters. 29. Chapter XXVII The next decade. 30. The end of the deck. ## Related Decks - [Origins of Language](https://shipslides.com/d/languages-origins-of-language) - [Computational Linguistics](https://shipslides.com/d/languages-computational-linguistics) - [Dialects & Sociolinguistics](https://shipslides.com/d/languages-dialects-and-sociolinguistics) - [Endangered Languages](https://shipslides.com/d/languages-endangered-languages)