1．关系代词有：that,which,who,whom,whose,在定语从句中作主语、宾语中表语，whose
作定语。代人的有：who,whom,whose,that；代物的有：that,which,whose.
The man who helped you is Mr White.(who代人，在定语从句中作主语)
That is the person(whom/who/that) you want to see. (whom,who,that指代人，在定语从句中作宾语，可省略)
I´m not the fool(that) you thought me to be.(that代人，在定从中作表语)
