In Vietnamese, nào is used to express “which”.
Vietnamese is a wh-in-situ language, which means, in Vietnamese, the question words aren’t moved to the beginning of sentences, but rather stay in their original positions.
Structure
When combining with a noun and/or a measure word, place nào after them.
noun + nào
measure word + nào
measure word + noun + nào
Examples
- Anh chọn cái nào?Which one do you choose?
- Con nào nặng nhất?Which one (animal) is the heaviest?
- Chúng ta nên học ngôn ngữ nào?Which language should we learn?