专升本英语复习：定语从句that与which的用法区分

    引导定语从句的关系词有关系代词：that, which, who (宾格whom, 所有格whose) 和关系副词where, when, why。关系词放在先行词和定语从句之间，起连接作用，同时还做定语从句的一个成分。
    1． 关系代词引导的定语从句
    引导定语从句的关系代词主要有that、which、who、whom、whose，其中whom引导的是宾格，whose引导的是所有格。
定语从句that与which的用法区分
    2．that与which的用法区分
    1）只能用that，不能用which作为定语从句关系代词的情况
    a）当先行词由不定代词anything, nothing, the one, all, much, few, any, little等代替时，关系代词只能用that而不能用which 。例如：There is nothing that I can do
    b）先行词有the only, the very, the same, the last修饰时
    例如：The last place that I visited was the hospital.
    c）先行词为序数词、数词、形容词最高级。
    例如：This is the first composition that he has written in English.
    d）先行词既有人，又有物时
    例如：He talked about the teachers and schools that he had visited.
    2）只用which不用that的情况
    a）引导非限定性定语从句时
    例如：The tree, which is four hundred years old, is very famous here.
    b）介词后用which
    例如：We depend on the land from which we get our food.