人教版八上Uuit 3 I'm more outgoing than my sister.-Section A Grammar focus3a—3c-ppt课件-省级优课-(配套教案编号：e204a).pptx

1、HelloHello！ Welcome Welcome to our English class!to our English class! 双实联盟 廖凤琴 A B bigger smaller heavier thinner shorter taller 形容词原级形容词原级 形容词比较级形容词比较级 形容词最高级形容词最高级 1) 1) 一般情况加一般情况加 er fast faster high higher clever cleverer 规则变化规则变化 单音节词单音节词和和少数双音节词少数双音节词 2) 2) 以字母以字母 e 结尾去掉结尾去掉e加加 er fine finer

2、late later nice nicer 3) 3) 重读闭音节重读闭音节、末尾只有一个辅音末尾只有一个辅音 字母字母时时双写双写加加 er fat fatter big bigger thin thinner 4) 4) 以辅音字母加以辅音字母加 y 结尾变结尾变 y 为为 i 加加 er early earlier easy easier lucky luckier 三音节，多三音节，多音节比较级音节比较级用用MOREMORE delicious interesting beautiful more delicious more interesting more beautiful 二、

3、二、形容词比较级形容词比较级的不规则变化的不规则变化 原级原级 good well bad ill many much little far old 比较级比较级 说明说明 巧记：巧记： 特殊形式比较级特殊形式比较级 共有三对二合一共有三对二合一 坏病两多坏病两多并并两好两好 little意思不是小意思不是小 一分为二有两个一分为二有两个 一是一是老老来二是来二是远远 better worse less more farther further older elder Exercises： good - _ bad/ill - _ little - _ many/much -_ far -_

4、-_ old - _ -_ better worse less more farther further older elder clean-_ nice -_ easy-_ fat -_ beautiful-_ cleaner easier fatter more beautiful nicer 用于两者（人或物）之间用于两者（人或物）之间，表示，表示 “一个比另一更一个比另一更” 结构：结构：A +谓语+比较级 than B。 “Which who is+ 比较级，or?” Tom Jerry Jerry is shorter than Tom. big small A B Ball A

5、is _ _ Ball B. Ball B is _ _ Ball A. bigger than smaller than U.S.A Australia USA is bigger than Australia. . than . than 后面接代词时，一般要用后面接代词时，一般要用 主格主格 ，但在口语中也可以换成但在口语中也可以换成宾宾 格格。 egeg: He is : He is better better at math at math than than I (me).I (me). 他比我更擅长数学。他比我更擅长数学。 形容词形容词比比较级前可加数词较级前可加数词，表示，表示

6、 “大（小）“大（小）多少”“长多少”“长 （短）（短）多少”多少” eg:Heeg:He is is five years youngerfive years younger than me.than me. 他比我小五岁。他比我小五岁。 表示表示倍数时用倍数时用:“times:“times（倍，（倍， 倍数）倍数）+ +比较级比较级+than+than” eg:My room is three times bigger than yours. 我的房间比你的大三 倍。 vegetables pancake Which is more delicious , vegetables or pa

7、ncake? 表示两者之间的选择， “Which who is+ 比较级，or?” （2 2）“比较级“比较级+and+and+比较级”表示比较级”表示 “越来越“越来越” egeg: : The life is The life is betterbetter and and betterbetter. . She is She is happier happier andand happierhappier. . （3）“The +The +比较级比较级，the +the +比比 较级”表示“越较级”表示“越，就越，就越” eg：The busier he is ,the happier

8、he feels. 他越忙就越高兴。 (4 4) )、用比较级形式表示最高用比较级形式表示最高 级的意思级的意思: : 比较级比较级+than any other+than any other+单单 数数 eg: Yao ming is taller than any other boy in the group. as+形容词原形+as Xiao xin is as tall as Kelan. 小新和柯楠一样高。 否定 not as+形容词原形+as “和 不一样” not so+形容词原形+as 不及不如 Xiao xin is not as thin as Kenan . Kenan

9、is not as fat as Xiao xin . What do you study today? 等等 级级 用法用法 句型句型 例句例句 比比 较较 级级 “Which/who is+ 比较比较 级，级，or?” Which is longer, this one or that? Our school is larger than theirs. The days are getting longer and longer. 1.表示两者 之间的比较 比较级+ than 2.表 “越来 越”，表 示本身程度的 改变 比较级+and +比较级 等等 级级 用法用法 句型句型 例句例句

10、 比比 较较 级级 The smaller the house is, the less it will cost us the heat. He is taller than any other boy in his class. 3.表 “越 越 The+比较 级，the+ 比较级 4.用比较级 形式表示 最高级的 意思 比较级 +than any other+单数 等等 级级 用法用法 句型句型 例句例句 原原 级级 1. 表示双方 在程度、性 质、特征等 方面相等时 2.表示双方 不相等时 as+原级形容 词/副词+as not so/as+ 原级形容词 +as Tom is thre

11、e times as old as Mike There are as many students in our school as yours. Jim is not so/as tall asTom. Exercise Exercise TimeTime Follow ups(随堂练习) 1、The Changjiang River is _ than any other river in China. A. shorter B. longer C. shortest D. longest 2、Bob never does his homework _ Mary. He makes lot

12、s of mistakes.(错误) A. so careful（仔细） B. as carefully as B B Follow ups(随堂练习) 3、_ she is, _ she feels. A. The more busy, the more happy B. The busy, the happy C. Busier, happier D.The busier, the happier 4、The weather is getting c_ a_ c _ .(越来越冷) D D older nd older 6. In our city its in July ,but it

13、is even _in August . A. hotter; hottest B. hot; hot C. hotter; hot D. hot; hotter D 5. The bread is _ than these cakes A. very delicious B. much delicious C. more delicious D. as delicious C 7. An elephant is than a tiger. A. Heavy B. very heavy C. the heaviest D. heavier 8. Which subject is _ , physics(物理) or chemistry（化学） ? A. interesting B. most interesting C. more interesting D. the most interesting C D Good , better , best, Never let it rest . Till good is better, And better , best . 好上加好，直到最好；好上加好，直到最好； 精益求精，永无止境。精益求精，永无止境。