Simplified:

On the HSK 1 vocabulary list, at CEFR level A1.

duì ㄉㄨㄟˋ

    • right correct
    • towards at for
    • concerning regarding
    • to treat (sb a certain way)
    • to face
    • opposite facing matching

      bound form

    • to match together to adjust
    • to fit to suit
    • to check to compare
    • to answer to reply
    • classifier: couple pair
    • to add to pour in (a fluid)

Where 對 is used

Sources