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1、Hello！Welcome to our English class!,Hello！,形容词的比较级,形容词的比较级,A,B,bigger,smaller,ABbiggersmaller,heavier,thinner,heavierthinner,shorter,taller,shortertaller,形容词原级,形容词比较级,形容词最高级,形容词原级形容词比较级形容词最高级,形容词的比较级构成,规则变化,不规则变化,形容词的比较级构成规则变化不规则变化,1) 一般情况加 er fast faster high higher clever cleverer,直,规则变化,单音节词和少数双音
2、节词,1) 一般情况加 er 直规则变化单音节词和少数双音,2) 以字母 e 结尾去掉e加 er fine finer late later nice nicer,去,2) 以字母 e 结尾去掉e加 er 去,3) 重读闭音节、末尾只有一个辅音 字母时双写加 er fat fatter big bigger thin thinner,双,3) 重读闭音节、末尾只有一个辅音双,4) 以辅音字母加 y 结尾变 y 为 i 加 er early earlier easy easier lucky luckier,变,4) 以辅音字母加 y 结尾变 y 变,三音节，多音节比较级用more,delici
3、ousinterestingbeautiful,more delicious more interesting more beautiful,多,三音节，多音节比较级用more more delicious,二、形容词比较级的不规则变化,better,worse,less,more,fartherfurther,older elder,二、形容词比较级的不规则变化原级 比较级说明better,Exercises：,good - _ bad/ill - _little - _ many/much -_far -_ -_old - _ -_,better,worse,less,more,farth
4、er,further,older,elder,clean-_ nice -_ easy-_ fat -_beautiful-_,cleaner,easier,fatter,more beautiful,nicer,Exercises：good - _ bet,用于两者（人或物）之间，表示“一个比另一更”结构：A +谓语+比较级 than B。“Which who is+ 比较级，or?”,一、形容词比较级的常用句型,用于两者（人或物）之间，表示“一个比另一更”一、形容,Tom,Jerry,Jerry is shorter than Tom.,Tom JerryJerry is shorter
5、th,big,small,A,B,Ball A is _ _ Ball B.Ball B is _ _ Ball A.,bigger than,smaller than,big smallABBall A is _ _,U.S.A,Australia,USA is bigger than Australia.,U.S.AAustraliaUSA is bigger th,初中英语人教版八年级上册Unit3-形容词的比较级(共44张PPT),. than 后面接代词时，一般要用主格 ，但在口语中也可以换成宾格。 eg: He is better at math than I (me). 他比我更
6、擅长数学。,初中英语人教版八年级上册Unit3-形容词的比较级(共44张PPT),形容词比较级前可加数词，表示“大（小）多少”“长（短）多少” eg:He is five years younger than me. 他比我小五岁。,形容词比较级前可加数词，表示“大（小）多少”“长（短,表示倍数时用:“times（倍，倍数）+比较级+than” eg:My room is three times bigger than yours. 我的房间比你的大三倍。,表示倍数时用:“times（倍，倍数）+比较级+than,vegetables,pancake,Which is more delicio
7、us , vegetables or pancake?,表示两者之间的选择， “Which who is+ 比较级，or?”,vegetablespancakeWhich is more,（2）“比较级+and+比较级”表示 “越来越” eg: The life is better and better.,（2）“比较级+and+比较级”表示,She is happier and happier.,She is happier and happier.,（3）“The +比较级，the +比较级”表示“越，就越” eg：The busier he is ,the happier he feel
8、s. 他越忙就越高兴。,（3）“The +比较级，the +比较级”表示“越，,(4)、用比较级形式表示最高级的意思:比较级+than any other+单数,(4)、用比较级形式表示最高级的意思:,eg: Yao ming is taller than any other boy in the group.,eg: Yao ming is taller than a,二、形容词原级的常用句型,as+形容词原形+as,Xiao xin is as tall as Kelan.小新和柯楠一样高。,二、形容词原级的常用句型as+形容词原形+asXiao x,否定 not as+形容词原形+as
9、“和 不一样” not so+形容词原形+as 不及不如,否定,Xiao xin is not as thin as Kenan .,Kenan is not as fat as Xiao xin .,Xiao xin is not as thin as K,What do you study today?,What do you study today?,形容词的比较级构成,规则变化,不规则变化,形容词的比较级构成规则变化不规则变化,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,等级用法句型例句“Which/who is+ 比较级
10、，or,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,The smaller the house is, the,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 three times as old as MikeThere are as many students in our school as yours.,Jim is not so/as tall asTom.,等级 用法 句型 例句 1. 表示双方在程度、性
11、质、特征等方,Exercise Time,Exercise Time,Follow ups(随堂练习),1、The Changjiang River is _ than any other river in China. A. shorter B. longer C. shortest D. longest2、Bob never does his homework _ Mary. He makes lots of mistakes.(错误) A. so careful（仔细） B. as carefully as,B,B,Follow ups(随堂练习)1、The Changjia,Follo
12、w 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 happier4、The weather is getting c_ a_ c _ .(越来越冷),D D,older,nd,older,Follow ups(随堂练习)3、_ she is,6. In our city its in July ,but it is even _in August . A. hotter; hottest
13、 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,6. In our city its in,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,7. An elephant is th,初中英语人教版八年级上册Unit3-形容词的比较级(共44张PPT),Good , better , best,Never let it rest .,Till good is better,And better , best .,好上加好，直到最好； 精益求精，永无止境。,Good , better , best,Never l,
