1、where引导定语从句时,where是关系副词,在从句中作地点状语,其前面有表示地点的先行词,where引导的从句修饰先行词。
例:The shop where I bought this shirt is not far from here.
我买这件衬衫的商店离这里不远。
2、where引导状语从句时,where是从属连词,where引导的从句修饰主句的谓语动词,where前面没有表示地点的先行词。
例:Make a mark where you have any doubts or questions.
在你有疑问的地方做记号。
We should go where we are needed.
我们应该到需要我们的地方去。
Wuhan lies where the Changjiang River and the Han Jiang River meet.
武汉位于长江与汉江交汇处。
Where there is a will, there is a way.
有志者,事竟成。
This is the house where/in which I lived two years ago.
这是我两年前住过的房子。