Doing is better than saying. 会说不如会做 延安市宝塔区第四中学2016——2017学年高一年级第一学期英语学案 主编人 李小溪 审核人 张学莉 审批人 李国鹏 课 题 A Lesson in a Lab ---- Grammar Degrees of comparison （比较级） 学习目标 1. To learn several special uses of Degrees of comparison and learn to use the three different expressions of multiples correctly. （学会比较级几种特殊用法和学会使用三种倍数的表达方式) 2. To learn to use the degrees of comparison to describe things through class activities. (通过课堂活动学会使用比较级描述事物) 3. To develop the habit of cooperation by discussion in groups.（培养小组合作探究习惯） 学习重点 1. To learn the use of Degrees of comparison. 2. To learn the three different expressions of multiples. 学习难点 To learn to use the degrees of comparison to describe things through class activities. 学法指导 1参考新新学案和英语报预习完成自主学习部分观察所给句子，发现比较级几种特殊结构以及倍数的表达的规律予以并总结，并适当练习。 2课堂上在老师的指导下主动参与课堂活动小组合作探究和讨论，通过听说读写等方式来实践自己课前自主学习到的语法规律。 3 课后完成老师布置相关习题来巩固比较级和倍数的用法。 学 习 过 程 一.形容词和副词比较等级的用法 1. 原级比较： 我观察：a . Dick is as tall as his brother. b. Tom speaks as quickly as his cousin. c. I have never seen a person as/so clever as he is. d. I have as many books as Tom. e. She is as good an actress as she is a teacher. 我发现：表示两者程度 . (1)用“___+形容词/副词+___” 结构表示________ (2)否定形式为：not ___/__+形容词/副词+___。表示“和……不一样；不如” (3)as many /much +名词+as 表示“和……一样多” as ++a/an +单数名词 +as表示“和……一样多” 2. 比较级： 我观察:a. Our classroom is brighter than yours. b. Dogs run faster than rabbits. 自 c. I don’t think math is more important than physics. 我发现：1) 表示A超过B时, 用形容词和副词的__________级+______表示。 我观察：a. Rabbits ran less fast than dogs. b. Jenny is less clever than her sister. 主 c. It rains less often here in autumn than in spring. 我发现：2) 表示A不如B时，用“_________+形容词/副词的_____级”+_____表示。 学 二. 形容词和副词比较级的常见句型： 1.我观察: a. You are growing taller and taller. 你越长越高了。b. English is becoming more and more important.英语习 越来越重要了。c. The rent of our flat is getting more and more expensive. 我的楼房租赁费越来越贵了。 我发现: ______+ and + ______表示“________________” 2.我观察 a. The harder you push, the more quickly that cart will move. 你越使劲推，车就跑的越快。 b. The more careful you are, the better you will do in the exam. 你考试越仔细，就会考得越好。 c. The more you practice, the more fluently you will speak. 你练得越多，讲得就越流利。 我发现:the + _______+ 句子其他成分，the + ________+ 句子其他成分：表示“________________”。 3.我观察 a. Jack is the taller of the two brothers.杰克是兄弟俩中较高的一个。 b. This is the bigger of the two rooms. 这个房间是两个中较大的一个。 我发现: the +________ + of the two…：表示“两个……中比较……的一个”。 4. 我观察: a. I couldn’t agree with you more. B. I haven’t a better teacher c. It couldn’t be better. 我发现:否定词+比较级表示______________ 三.形容词和副词比较级的倍数表达法 用英语表达“A是B的N倍长（宽、高）”，“A 比 B 长（宽、高）N倍”可用下列几种句型。 1.我观察: a. This tree is three times as tall as that one.这棵树是那棵树的三倍高。 我发现: b. His father is twice as old as he. 他父亲的年纪有他两倍大。 (1) “A + be + 倍数 + ______________________________+ B”。 2.我观察: a. The Yangtze River is almost twice longer than the Pearl River. 长江差不多比珠江的长一倍。 b. The dictionary is exactly five times more expensive than that one. 这本字典比那本恰好贵四倍。 我发现:(2) “A + be + 倍数+ ______________________+ B ” 3. 我观察 :The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 我发现:(3) “A + be + 倍数 +________________________ of + B ” Practice: Do the exercises in activity2 on page 43 and activity2 on page 47 1. Make sentences about the comparative sizes（比较大小）of the pairs. Use the words in the brackets(括号中). 2. Use the words below to write sentences as in the example. Activity1 Translation 1. 期末考试总是比较难。_______________________________________________ 2. 阅读比烹饪有趣。_______________________________________________ 3. 外语跟计算机科学一样实用。______________________________________ 4. 你学得越多，你越是想学。_________________________________________ 合 5. 多多益善。________________________________________________ 6. 亨利的书没有我的那么多。__________________________________ Activity2 Group Competition 作 You have already been separated into(分成) 9 groups. The leader of each group should choose two numbers of the pictures first. 探 1.Compete with other groups and make up sentences or dialogues by using the degrees of comparison(比较级) and the three different expressions of multiples（倍数表达）. 究 2. Groups that make the most sentences win. （造的比较级句子最多，参与人数最多的小组获胜） 3. The winners will get prizes. Prepare your sentences here: ———————————————————————————————————— ———————————————————————————————————— ———————————————————————————————————— ———————————————————————————————————— Complete the passage with the correct from of the words. 自 For many people, life is a lot _______ (easy) today. Medicine and diet are improving _________ (quickly), and people are getting ________ (healthy) and living _______ (long). But the area of life that is 我 changing ______________ (quickly) of all is communication. Fifty years ago, computers were much _______ (big) and less ________ (powerful) than they are now. Today, we use the Internet, so we can 检 communicate _________ (easily) with friends all over the world. Not all the changes are ______ (good) ones. More people drive cars instead of riding bikes, so they aren’t as ______ (fit) as they were. Traffic doesn’t just make the roads __________ (crowded), it also 测 makes pollution _______ (bad) .We must all think ___________ (carefully) about how we can use _______(little) energy. We must all work ______ (hard) to reduce pollution. 知我的收获 识梳我的疑惑 理 本文来源：https://www.wddqw.com/doc/f4b973df85254b35eefdc8d376eeaeaad1f31694.html