1、课题：八 年级英语学科Lesson 4导学案（第 4 课时）【学习目标】1.学习 asas结构及其用法2. 能根据所给的图表信息，运用所学语法知识，比较事物【重难点预测】重点： 根据所给的图表信息，运用所学语法知识，比较事物难点：运用（not）asas 结构比较事物【学习流程】、预习检测1. This show is as_ as that talent show American Idol.A. excited B. exciting C. more excited D. more exciting2. This dictionary is _ you think.A. as not use
2、ful as B. as useful not asC. not useful as D. not as useful as 3. With light bulbs, people can do _ in the evenings _ they can in the daytime.A. as many things; as B. mangy things as; asC. things as many; as D. as many as; things来源:学优高考网、自主探究归纳: We use (not) asas with( the base form/the comparative
3、) of adjectives to compare things and people.We use (not) as.as with _ +the plural form of a countable noun or_+an uncountable noun to compare amounts.、合作交流根据括号里所给出的词，完成练习 B1，理解产品说明中 H，W, D分别代表高（Height） 、长（Long）和宽（Depth） 。eg:1 The Hotwave and the Micro-King are not as expensive as (expensive) the Sp
4、eedcook and the Superoven.来源:gkstk.Com括号里给出的词是“expensive” ，可以知道把 the Hotwave + the Micro-King和 the Speedcook + the Superoven进行价格的比较，前面两者加起来没有后面两者加起来那么贵，所以应填的是 not as expensive as（没有和一样贵） ，前面的主语和 not as expensive as 之间少了一个谓语动词，主语是复数，时态的一般现在时，所以谓语动词用are. 用同样的方法可完成剩下的 4道题。来源:gkstk.Com来源:学优高考网 gkstk、课堂检测：完成 B2部分的练习。B2部分是根据图表比较 Brown，White，Black 和 Green家庭一年内扔cans，plastic，paper 和 glass的数量，用（not）as many/much as 完成句子（not）as many/ much.as (没有)和.一样多throw away 扔、师（生）总结反思收获策略与反思纠错与归纳来源:学优高考网 gkstk
