Unit 7 The Sea 教案
a. when 相當于at/in/on/during等+which.
the date on which he joined the party was july 1，1984.
翻譯：
b. where相當于at/in/on/等+which。
the house in which he lived is a library now.
翻譯：
c. why 相當于for+which.
is that the reason for which he was absent from class?
翻譯：
2.介詞+which/whom, 關系代詞作介詞的賓語，這是我們學習定語從句的重點，也是高考的常考點。which指物，whom指人。在這種結構中，介詞的選擇非常關鍵, 可根據定語從句所修飾的名詞或代詞來選擇介詞。也可根據從句的相關動詞來選用。
this is the professor from whom i have learnt a lot.
翻譯：
have you see the pen with which i write my homework.
翻譯：
in the dark street, there wasn’t a single person to whom she could turn for help.
翻譯：
【注意】在日常英語中通常把介詞放在從句的句末，省略關系詞which/whom。
this is the professor (whom/that) i have learned a lot from.
this is the camera (which/that) he often takes photos with.
【小試身手】
i單項選擇（c級）