where作关系代词,在从句中代替的是介词短语 eg:I live in the house where my parents live .(代替in the house) which作关系代词,在从句中代替主语或者宾语的成分 eg:I live in the house which my parents live in.(代替house)
定语从句中,指物时,which和that一般没什么区别。 有些情况下,只宜用that,而不宜用which i. 先行词是最高级形容词或者它前面有最高级形容词的时候 This is the best that has been used against pollution. English is the most difficult subject that you ...