關係副詞 (Relative Adverb)
關係副詞 when, where, why 可以用來連接子句。它通常取代介系詞 (in, at, on, for) 和關係代名詞 which 。由關係副詞所形成的關係子句，當形容詞使用，修飾前面的名詞。
This is the restaurant in which we met last week.
This is the restaurant where we met last week.
Please contact the park at which you want to volunteer.
Please contact the park where you want to volunteer.
Sunday is the day on which we usually clean our house.
Sunday is the day when we usually clean our house.
Tell me the reason for which you came home late.
Tell me (the reason) why you came home late.
This is the shop in which I bought my backpack.
→ This is the shop _______ I bought my backpack.
(A) where (B) why (C) when
- This is the reason when I never call her.
- This is the reason why I never call her.
I remember the day _______ we first met.
(A) when (B) where (C) why
Here's the reason _______ I did it.
(A) where (B) when (C) why