一、关系代词的用法 1. that和which的用法。 (1)that既可指人又可指物,which指物;它们在从句中作主语、宾语或表语,which和that在从句中作宾语时可省略。 *Please find a room which/that is big enough for all of us to live in. 请找一间足够住下我们所有人的房间。(此处先行词是room,引导词which/that在从句中作主语,不能省略)