关系副词when主要用于修饰表示地点的名词，同时它在定语从句中用作时间状语。如：
This is the village where he was born. 这就是他出生的村子。
That's the hotel where we were staying last summer. 这就是我们去年夏天住的旅馆。
Barbary was working in Aubury, where she went daily in a bus. 巴巴拉在奥伯里工作，每天得坐公共汽车去上班。
与前面when的情况一样，注意不要一见到先行词为地点名词，就以为一定要用关系副词where来引导定语从句，同时还要看它在定语从句中充当什么成分——如果在定语从句中用作地点状语，就用where;如果在定语从句中不是用作时间状语，而是用作主语或宾语，那就不能用where，而要用that, which等。如：
He works in a factory that [which] makes TV sets. 他在一家电视机厂工作。
关系代词that / which在定语从句中用作主语。
另外注意，where有时还可用于抽象名词后引导定语从句。如：
We have reached a point where a change is needed. 我们到了必须改一改的地步。
There are cases where the word “mighty” is used as an adverb. 在一些情况下，mighty一词可用作副词。
He got into a situation where it is hard to decide what is right and wrong. 他陷入一种难以分辨是非的局面。
I don't want a job where I'm chained to a desk all day. 我不想找一份整天坐办公桌前的工作。
