Vietnamese · Question Words

tại sao

Why

Beginneradverb

Definition

Used to ask about reasons.

Example

Tại sao bạn đến muộn?

Why were you late?

Etymology

'Tại sao' translates to 'why,' where 'tại' means 'because of' and 'sao' means 'what.' Its evolution reflects questioning of causation in the Vietnamese language.

How & Where It’s Used

'Tại sao' is frequently employed in spoken and written Vietnamese, particularly in interpretations, discussions, and casual conversation. It enjoys widespread usage across Vietnam.

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