which 用于代替"表示事物意义"的先行词，在从句中作主语、宾语。

例如：Views which are entirely new or foreign may also be hard to accept .那些全新的或是来自国外的观点或许也很难被接受。

I've got a novel which you may like to read .我弄到一本你或许想看的小说。

That was a fault which could not be forgiven . 那是不能饶恕的错误。

that 既用于代替"表示人的意义"的先行词，也用于代替"表示事物意义"的先行词;在从句中既可以作主语，也可以作谓语动词的宾语，但是不能作介词的宾语。在一定范围内，that = who / whom / which 。

例如：Views that (which ) are entirely new or foreign may also be hard to accept .那些全新的或是来自国外的观点或许也很难被接受。

Salaried people that ( who) earn more than a few thousand dollars must pay a certain percentage of their salaries to the federal government .工薪在几千美元以上的人必须将工资中的一定百分比交付给联邦政府。

Who is the girl to that you talked just now ? (错误)

要点提示：定语从句中作宾语的关系代词可以省略;如果关系代词在定语从句中作宾语可以省略。

例如：This is the book ( which ) you were looking for yesterday . 这就是你昨天找的那本书。

【高中英语语法详解：定语从句中关系词的选择】相关文章：

★ 初中英语语法：现在完成时练习题

★ 小学英语语法：助动词

★ 高考英语语法：不定式、现在分词和过去分词作宾补的区别

★ 英语语法：一般疑问句

★ 初中英语动词不定式作定语的用法

★ 初中英语语法必备：关系代词who与whom的用法区别

★ 语法复习六：状语从句

★ 英语语法：不定代词

★ 初中英语语法：词性转换

★ 英语语法：特殊疑问句