英文關係副詞-when(Relative adverbs-when in English)

關係副詞when用來表示「時間｣。
when=at/in/on…+which，至於是at、in或是on則視原本的時間介係詞(Prepositions of time)而定喔。
Do you know the time at which guests come? (你知道客人來的時間嗎?)
=Do you know the time when guests come?

參見(See also)
關係子句(Relative clause)
關係代名詞(Relative Pronoun)
複合關係代名詞(Compound relative pronoun)
關係副詞(Relative adverbs)
　關係副詞-when(Relative adverbs-when)
　關係副詞-where(Relative adverbs-where)
　關係副詞-why(Relative adverbs-why)
　關係副詞-how(Relative adverbs-how)
分裂句(Cleft sentence)