"就从不救主"原则是指在名词性从句中，当主句中差宾语同时宾语从句中差主语，在选择whoever, whomever或who, whom 时，必须首先满足从句中的主语，故称之为"救从不救主". 25. reason 后面有几种从句?如何判断?【适合于高二, 高三】 定语从句： 由for which, why引导，引导词必须代替先行词在其从句中充当成 分.如：What is your reason why (for which) you were late? 同位语从句：由that引导，引导词在从句中不充当句子成分.如：The reason that he didn come her this morning is not clear. 表语从句： 由that引导，在从句中不充当句子成分.如：The reason is that he doesn like being laughed at in public. 更多精彩内容 全国新东方英语课程搜索
（责任编辑：何莹莹）
