英语定语从句最常用的关联词是关系代词that,which和who等,但如先行词表示时间或地点,可分别用关系副词when或where作关联词。例如: 1.Such a pulse is felt in the latest stages of peritonitis,and not in the earlier stages when diagnosis is so important. 这种脉搏在腹膜炎的最晚期,而不是在做出诊断是特别重要的早期才能摸到。 when引出的定语从句的先行词是 The most commonly used related terms in English attributive clause are the relative pronoun that, which and who, etc., but if the antecedent indicates the time or the place, they can be used as the related adverb when or where. For example: 1.Such a pulse is felt in the latest stages of peritonitis, and not in the earlier stages when the diagnosis is so important. This pulse is at the very latest stage of peritonitis, rather than earlier being able to touch To when the leading clause of the attributive clause is derived