在定语从句中,关系代词或关系副词都代替先行词在从句中充当一定的成分,如果该从句中缺少主语、表语、宾语或定语,就要用关系代词来连接从句;如果从句中缺少状语,就得用关系副词来连接从句。例如: (1)I still remember the days which / that we spent together. (2)I s...