定语从句是高中新教材里重要的语法内容,它贯穿了整个高中新教材,从高中一年级的限制性定语从句中,关系代词 that,which,who,whom 的基本用法及关系副词 when,where,why 的基本用法,到高中二年级的非限制性定语从句,以及介词+关系词的用法,到高三年级的分隔式定语从句的考查贯穿整个新教材,它是 The attributive clause is an important grammar content in the new high school textbooks. It runs through the entire high school and new teaching materials. It uses the basic usages of the relative pronouns that, which, who, and hom, and the related adverbs when, where, from the restricted attributive clause in the first grade of high school. The basic usage of why, the use of non-restrictive attributive clauses in the second grade of high school, and the use of preposition + relational words, and the separation of the third grade graded attributive clause throughout the new textbook, it is