1. Language Translation Activity: Have John translate select passages from the novel into a language of his choice to enhance his vocabulary and understanding of different linguistic structures.
  2. Foreign Language Book Club: Initiate a book club session where John can discuss the novel with other language enthusiasts, encouraging bilingual discussions and language practice.
  3. Foreign Language Adaptation: Encourage John to explore translated versions of '20,000 Leagues Under the Sea' in various languages to appreciate cultural nuances and language variations.
  4. Language Learning Through Sea Creatures: Create a vocabulary list focusing on sea creatures mentioned in the novel, prompting John to learn their names in different languages.
  5. Multilingual Sea Exploration Journal: Ask John to keep a journal in multiple languages detailing his thoughts on the underwater world depicted in the novel, enhancing his language proficiency.
  6. Foreign Language Audio Tour: Develop an audio tour in different languages based on key locations in the novel, allowing John to immerse himself in language learning while exploring the story.
  7. Language Exchange Program: Pair John with a native speaker of a foreign language to discuss '20,000 Leagues Under the Sea,' offering an interactive learning experience and cultural exchange.
  8. Language Comparison Project: Encourage John to compare different translations of the novel, analyzing linguistic choices and cultural interpretations across languages.
  9. Foreign Language Presentation: Challenge John to prepare a presentation on the novel in a foreign language, showcasing his language skills and understanding of the story.
  10. Language Learning Through Nautical Terms: Introduce John to nautical vocabulary used in the novel, prompting him to learn sailing terms in foreign languages for a specialized language focus.