一、关系副词的用法
关系副词在引导定语从句时，其功能相当于介词短语，在句中作状语。when，where，why在定语从句中分别作时间状语、地点状语和原因状语。
1．when指时间，在定语从句中作时间状语。
I still remember the day when I first went to the Great Wall.
我还记得我第一次去长城的那一天。
The day when we get together will come soon.
我们重聚的日子很快就会来的。
[名师点津] 若时间名词后面的定语从句的引导词在从句中作主语或宾语，则改用which或that引导。
Do you remember the days(which/that)we spent together?
你还记得我们一起度过的那些日子吗？(关系词在从句中作spent的宾语)
2．where指地点，在定语从句中作地点状语。
The house where I lived ten years ago has been pulled down.
我10年前居住的那所房子已经被拆了。
He is now working in the factory where his father worked.
现在他正在他父亲工作过的那家工厂工作。
[名师点津] 若地点名词后面的定语从句的引导词在从句中作主语或宾语，则改用which或that。
The school(which/that)we visited yesterday is newly built.
我们昨天参观的那所学校是新建的。
(关系代词which/that在从句中作宾语)
3．why指原因，在定语从句中作原因状语。
The reason why he succeeded in the exam is that he studied very hard.
他考试成功的原因是他学习很认真。
[名师点津] reason后的定语从句的引导词若在从句中作主语或宾语，则改用which或that。
This is the reason(which/that)our teacher gave us for doing it.
这就是我们老师给我们的做此事的理由。(关系代词在从句中作宾语)
He gave me a reason that/which was reasonable.
他给了我一个合情合理的理由。(关系代词在从句中作主语)
[即时演练1] 用适当的关系词填空
①He arrived in Beijing on the day when I left.
②The factory where his father works is in the east of the city.
③This is the reason which/that he offered at the meeting.
