形容词和副词的比较级和最高级

(共17张PPT)
ENGLISH
形 容 词 与 副 词 的 比 较 等 级
初中英语课件
CHUZHONGYINYUKEJIAN
Show Learning aims(学习目标)
学习并掌握形容词与副词的比较级和最高级的构成。
学会运用形容词与副词的比较等级。
Show Learning aims
big
big
◇Look at the pictures and understand 看图并理解
big
bigger
◇Look at the pictures and understand 看图并理解
◇Look at the pictures and understand 看图并理解
big
bigger
biggest
fast
◇Look at the pictures and understand 看图并理解
fast
faster
◇Look at the pictures and understand 看图并理解
fast
faster
fastest
◇Look at the pictures and understand 看图并理解
The Comparative and Superlative Degrees of Adjectives and Adverbs(形容词和副词的比较级和最高级)
大多数形容词和副词有三个等级：
1、原级，即原形。（没有比较时用原级）
2、比较级，表示“较……”或“更……一些”。（两者比较时用比较级）
3、最高级，表示“最……”的意思。（两者以上用最高级）
一、形容词和副词比较级和最高级的构成
1、规则变化
构 成 方 法 原 级 比 较 级 最 高 级
单音节词和少数多音节词 一般在词尾加-er/ /或-est/ist/ cold colder coldest
fast faster fastest
以字母e结尾的形容词，加-r或-st nice nicer nicest
large larger largest
重读闭音节词只有一个辅音字母时，应先双写辅音字母；再加-es或-est big bigger biggest
hot hotter hottest
以“辅音字母+y”结尾的双音节词，先改“+y”结尾的双音节词，先改“y”为“i”,再加-er或-est easy easier easiest
early earlier earliest
多音节词和部分双音节词
在词前加more或most
tired more tired most tired
easily more easily most easily
原级 比较级 最高级
good / well better best
bad / badly worse worst
many / much more most
little less least
far farther farthest
further furthest
一、形容词和副词比较级和最高级的构成
2、不规则变化
二、形容词和副词的比较级和最高级的用法
1、表示“和……一样……”，用“as+原级+as”结构。
eg: He likes her as much as he likes his sister.
2、表示“不如……”，用“not as/ so+原级+as”结构或“less+原级+than”结构
eg: He does not smoke as/ so heavily as his brother.
He smokes less heavily than his brother.
3、表示“比……更……”，用“比较级+ than”结构。
eg: She sees me more often than she sees her brother.
4、表示“……中最……”,用“最高级+比较范围”结构，比较范围为短语从句。
eg: This is the best picture in the hall.
This is the best picture that he has ever painted.
■ 基本用法
二、形容词和副词的比较级和最高级的用法
5、表示“越来越……”，用“比较级+ and +比较级”结构或“more and more + 原级”结构。
eg: Things are getting better and better every day.
She is becoming more and more beautiful.
6、表示“……是……的几倍”，用“倍数+as+原级+as”结构，或者“倍数+比较级+than”结构。
eg: This classroom is three times as big as that one.
This classroom is twice bigger than that one.
■ 基本用法
二、形容词和副词的比较级和最高级的用法
1、形容词的比较级前面一般不加冠词，但表示“两者中较……”的时候，要用“the+比较级+of ”。
eg: She is better than she was yesterday.
She is the taller of the two girls.
2、形容词的最高级前面一般加定冠词，而副词的最高级前面可加可不加。
eg: This book is the most difficult that I have ever read.
He jumped (the) highest of the three boys.
3、比较级前面可以用even(更加)，much(……得多)，far(……得多)，a littlie(……一点)，a bit(一点)，slightly(些微地)，a great deal(大量)，a good deal(大量)，a lot(大量)，still(还，还要)等词语表示不定程度或数量。
eg: I am even less lucky.
She is far better than me at writing.
■ 特殊用法
Follow ups(随堂练习)
1、---Mr Zhou, all of the students in our group, who lives ____
---I think Li Lei does.
A. fat B. father C. farthest D. farest
2、The Changjiang River is ____ than any other river in China.
A. shorter B. longer C. shortest D. longest
3、Bob never dose his homework ____ Mary. He makes lots of mistakes.
A. so careful B. as carefully as
C. carefully as D. as careful as
4、____ she is, ____ she feels.
A. The more busy, the more happy B. The busy, the happy
C. Busier, happier D.The busier, the happier
5、The weather is getting w____ a__ w____ .(越来越糟糕)
C
B
B
D D
orst nd orst
THE END
再 见