先行词是地点时可以将先行词还原到从句中去,看它做什么成分。 eg. This is the school______ I lived10 years ago. 可还原为This is the school.和I lived in the school10 years ago. 先行词school 放回从句里前面加了介词,在从句中作地点状语,所以关系词要用where或in which. eg. This is the school ______ I visited yesterday. 可还原为This is the school.和I visited the school yesterday. 先行词school可直接放回从句中,作visit的宾语,故用that/which. 还原是一种很好的方法,可以看清句子成分,也可简言之:先行词是地点时看后面从句中的谓语动词是及物还是不及物。如:live为不及物动词,往往要说live in 加地点。visit为及物动词 ,可说visit 加地点。