3.【考查点】关系副词与“介词＋关系代词”的转化 when＝at/in/during＋which； where＝in/at＋which； why＝for which
This was a time when (＝during which) there were still slaves in the USA. 那是一个美国还存在奴隶的时代。
Is this the house where(＝in which) he was born? 这就是他出生时的那所房子吗？
I don't know the reason why(＝for which)he said that. 我不明白他说那事的原因。
四、例题精析
【例题1】
Students should involve themselves in community activities _____ they can gain experience for growth. A．who B．when C．which D．where
【答案】D
【解析】本题考查定语从句中关系副词的使用。
句意：学生应该使他们自己参与到团体活动中来，在这些活动中他们可以获得成长经验。
【例题2】
I am looking forward to the day ________ my daughter can read this book and know my feelings for her. A. as B. why C. when D. where
【答案】C
【解析】本题考查定语从句中关系副词的使用。
句意：我一直期待着我的女儿能读懂这本书，能明白我对她的感情的那一天。
