Asking questions is essential for communication. Here are the basic question words you need to know:

• Cái gì? - What?
• Ở đâu? - Where?
• Ai? - Who?
• Khi nào? - When?
• Tại sao? - Why?
• Như thế nào? - How?

Simply place these words at the end of a statement to turn it into a question. Example: 'Bạn đi đâu?' (You go where?) - Where are you going?