Formal:
* अंग्रेजी न बोलें (angrezi na bolen): This is the most direct and formal way to say it. It literally translates to "Don't speak English."
* कृपया अंग्रेजी न बोलें (kripya angrezi na bolen): This adds the word "please" making it more polite. It translates to "Please don't speak English."
Informal:
* अंग्रेजी मत बोलो (angrezi mat bolo): This is a more informal way to say it. It translates to "Don't speak English" and is more suitable for close friends or family.
* हिंदी में बोलो (hindi mein bolo): This means "Speak in Hindi." While not a direct translation, it conveys the same message and can be used in a more informal setting.
Remember: When speaking Hindi, tone and context are important. Using the appropriate level of formality and politeness is crucial for effective communication.