英语中关系代词的用法
主要的关系代词有 that, who, whom, whose, which, as 等。其中who, whom 只用于指人，which, as 只用于指事物，whose, that 既可于指人也可用于指物。关系代词在定语从句主要用于主语、宾语(可以省略)、表语或定语：
He is the man who [that] lives next door. 他就是就是住在隔壁的那个人。
How do you like the photo that [which] I took? 你觉得我拍的这张照片怎么样？
This is the same watch as I lost. 这块表跟我丢失的那块一样。
I want to find someone with whom I could discuss music. 我想找个能和我谈音乐的人。
She received an invitation from her boss, which came as a surprise. 她收到了老板的邀请，这是她意想不到的。