“介词+关系词”的用法1、关系代词在从句中作介词的宾语时，介词常可以提前，但介词提前时，关系代词只能用which 或 whom。如：The school (that/which) he once studied in is very famous.The school in which he once studied is very famous.Tomorrow I will bring here a magazine (that/which) you asked for.Tomorrow I will bring here a magazine for which you asked.Well go to hear the famous singer (whom/that/who) we have often talked about.Well go to hear the famous singer about whom we have often talked.2、关系副词when, where, why 和介词+which之间的关系。
