The world in which we live is made up of matter在这个句子中which是关系副词,因为定语从句中we是主语,live是谓语,in which是介词短语代替关系副词作的是地点状语。转变:将in放在后面The world which we live in is made up of matter.问:在转换后的句子中,which就变成关系代词了,这是问什么? 难道是which在定语从句中变成宾语的成分了?它怎么就变成宾语了呢?