where引导的定语从句有如下例句：
1、This z00 is not the only place where the animal can be seen.这个动物园并不是唯一能够看到这种动物的地方。
2、She's got herself into a dangerous situation where she's likely to lose her life. 她将自己置于了危险的境地，而且很有可能丢掉性命。
3、We both went into the coffee-room, where he had just finished his breakfast, and where I had ordered mine.我俩进了咖啡屋，在那儿他刚刚用完早餐，我也要了一份。
4、They housed him temporarily, in a furnished upper floor in the house down by the river, where Clara, Herbert's young lady, and her invalid father, lived.他们暂时把他安置下来，安置在河边那所房子.上边有家具的那一层,那里住着珂拉华，赫伯特年轻的太太，还有他病弱的父亲。
5、We both went to his office, where he closed the business of the day.我俩就去了他的办公室，他便把当天的事情停了下来。
定义：where引导定语从句时，其先行词是表示地点的名词，它在定语从句中作地点状语，此
时where相当于at/in/on+which。
where的其他用法：
一、 where引导状语从句
where引导状语从句时，它相当于in/at the place where。如： My father grew up where he was born. 我父亲是在他出生的地方长大的。 Take him where it is safe. 把他带到安全的地方去。
二、 where引导名词性从句
where引导的名词性从句主要有宾语从句、表语从句、主语从句以及同位语从句，此时where相当于the place where。如：
Can you tell me where you found it? 你能告诉我你是在哪儿找到它的吗？
That’s where I was when the accident happened. 那就是事故发生时我所在的地方。