初中英语定语从句中关系代词只能用that 的几种情况 定语从句的概念： 在复合句中，修饰某一名词或代词的从句叫定语从句。 被修饰的名词或代词叫先行词，定语从句一般放在先行词的后面。而引导定语从句的关系词有关系代词和关系副词。 Mary is a girl who has long hair.先行词 关系词 定语从句关系代词 关系副词which, that, who, whom, whosewhere , when He was the first person that passed the exam. This is the most wonderful time that I have ever had. 1 先行词被序数词或形容词最高级所修饰，或本身是序数词、基数词、形容词最高级时，只能用that Is there anything that I can do for you? Do you have everything that you need? 2 被修饰的先行词为all ， any ， much ， many ， everything ， anything ， none
