2、行词是时间名词时(e.g.theday)时引导词使用when,而关系副词why的先行词通常都是thereason,表示原因。二、教学设计(包括教学目标和教学过程)1.LearningObjectives:Help Ss to understand what Attributive Clause is and its function.especiallytherelativeadverbs. Help Ss to use “ when, where,why” in Attributive Clause properly.