面向21世纪,基础教育课程教材改革的重要任务是优化教材,并使之多样化,而我国目前的教材多样化建设正处于起步阶段,从国外教材中吸取先进经验,依然必不可少。作业系统作为中学语文教材的重要组成部分,长期以来却受到研究者的忽视,它的结构和编排往往得不到教材编写者的重视。本文通过对澳大利亚麦克米兰公司萨得勒·黑拉·鲍威尔编写的2005版《中学英语》这套教科书中作业系统特点作一个评价,以期对我国的教科书作业系统改革有所裨益。 Facing the 21st century, the important task of the textbook reform of basic education curriculum is to optimize and diversify teaching materials. At present, the diversification of teaching materials in our country is in its infancy. It is still necessary to draw on advanced experience from foreign textbooks. As an important part of high school language teaching material, operating system has long been neglected by researchers, and its structure and arrangement often can not get the attention of textbook writers. This essay evaluates the characteristics of the operating system in the textbook “Secondary English 2005” written by Sadelleh Alla Powell, a Macquarie company in Australia, in the hope of benefiting the textbook system reform in our country.