(共35张PPT)
Unit 1
Friends
Period 3
Grammar
1.学习目标
3.重点探究
2.自主学习
学习导航
5.当堂检测
6.课堂总结
4.拓展提升
新课导入
A Poem
Good, better, best,
Never let it rest,
And till good is better,
Better is best !
好,更好,最好,
永不停歇,
直到好变为更好,
那么更好就是最好!
1.能熟悉并正确运用本课时的重点单词和短语。
2.能掌握形容词的比较级和最高级的构成和基
本用法。
学习目标
New words
自主学习
worse
worst
height
weight
sec
competition
test
swimmer
adj. (bad的比较级)更差,更糟,更坏
adj. (bad的最高级)最差,最糟,最坏
n. 高,高度
n. 重量
abbr. (=second)秒
n. 竞赛,比赛;竞争
n. 测试,考查
n. 游泳者
重点探究
She is shorter than I am.
My book is more interesting than his.
We use comparatives + than to compare two people or things. We usually add -er to short adjectives and use more with long adjectives to form comparatives.
我们用比较级+than来比较两个人或事物,我们通常在短的形容词后面加上-er,在长的形容词前面加上more用构成形容词的比较级。
He is the tallest boy in our class.
This is the most expensive computer in the shop.
We use the + superlatives to compare three people or things. We usually add -est to short adjectives and use most with long adjectives to form superlatives.
我们用the+最高级来比较三个人或事物,我们通常在短的形容词后面加上-est,在长的形容词前面加上most用构成形容词的最高级。
Look at the words and try to work out the rules the formation of the adjectives' comparatives and superlatives.
great greater greatest
tall taller tallest
small smaller smallest
① 一些词在词尾加er变成比较级,加est变成最高级。
Look at the words and try to work out the rules the formation of the adjectives' comparatives and superlatives.
nice nicer nicest
fine finer finest
large larger largest
② 以字母e结尾的词只加r或st变成比较级或最高级。
Look at the words and try to work out the rules the formation of the adjectives' comparatives and superlatives.
slim slimmer slimmest
big bigger biggest
red redder reddest
③ 以一个辅音字母结尾的重读闭音节词,双写最后一个辅音字母,再加er或est。
Look at the words and try to work out the rules the formation of the adjectives' comparatives and superlatives.
pretty prettier prettiest
easy easier easiest
busy busier busiest
blay (寒冷的) blayer blayest
④ 以辅音字母加y结尾的词先把y变成i再加er或est。
Look at the words and try to work out the rules the formation of the adjectives' comparatives and superlatives.
beautiful more beautiful most beautiful
important more important most important
careful more careful most careful
popular more popular most popular
⑤ 多音节词和某些双音节词应在其前加more变成比较级,加most变成最高级。
不规则变化
more
better
worse
less
原级
比较级
最高级
good / well
ill / bad
many / much
little
best
worst
most
least
1. The sun is __________ (big) than the earth.
2. Which one is ________ (heavy), this box or that one
3. Who is ________ (tall), Pingping or Yangyang
4. Which is (fast), bike, bus or plane
5. He is one of (popular) singers in China.
6. Of all the girls, Lucy is ______________. (slim)
bigger
heavier
taller
the fastest
the most popular
the slimmest
Practice:
A. Daniel is writing about is classmates. Help him complete the following table with the correct adjectives.
Adjective Comparative Superlative
clean cleaner cleanest
short
cute
big
happy
lazy
shorter
shortest
cuter
cutest
bigger
biggest
happier
happiest
lazier
laziest
Adjective Comparative Superlative
thin
sad
difficult
interesting
good
bad
thinner
thinnest
sadder
saddest
more difficult
the most difficult
more interesting
better
best
worse
worst
most interesting
B. Daniel has made a profile of his classmates. Read the profile and complete his notes.
Millie Sandy Amy Peter Kitty Simon
Height (cm) 157 170 160 173 155 171
Weight (kg) 45 50 44 55 40 53
50 m swimming (sec.) 40 38 30 34 36 35
Drawing competition 9/10 10/10 9/10 5/10 6/10 8/10
English test 10/10 8/10 9/10 6/10 8/10 7/10
1 Simon is (tall) Sandy.
2 Peter is (tall ) of the six students.
3 Sandy is (heavy) Millie.
4 Peter is (heavy) of the six students.
5 Among the six students, Millie is (slow) swimmer.
the tallest
heavier than
the heaviest
the slowest
taller than
6 Amy is (fast ) swimmer of the six students.
7 Millie’s drawing is (beautiful) Peter’s.
8 Sandy’s drawing is (beautiful) in her class.
9 Millie’s English is (good) Simon’s. Millie’s
English is (good) in her class.
more beautiful than
the most beautiful
better than
the best
the fastest
Work out the rule!
We put than __________ (before/after) comparatives.
We put the ___________ (before/after) superlatives.
after
before
拓展提升
Language Points
形容词的级别
英语中形容词通常有三种等级 — 原级、比较级和最高级,用来描述人或事物在某个方面的不同程度。其中比较级的构成分为规则变化(分为长词变化规则和短词变化规则两类)以及不规则变化。
形容词的比较级和最高级
1. 当我们将两个对象进行比较时,我们要用形容词的比较级,表示“较……”,“更……一些”,“比……更……”。如:
My cousin is taller than I am. 我的表哥比我高。
2. 当被比较的对象是三个或三个以上时,我们会用形容词的最高级,表示“最……”,最高级前通常要加定冠词the。如:
This is the most interesting story in the book.
这是这本书里最有趣的故事。
注意:被比较的对象可以是人,也可以是事物。
规则 原级 比较级 最高级
单音节词和部分双音节词 大多数词后加er或est great near young greater nearer younger greatest
nearest
youngest
以字母e结尾的词加r或st large late larger later largest
latest
以一个辅音字母结尾的重读闭音节词,双写最后一个辅音字母,再加er或est hot thin hotter thinner hottest
thinnest
形容词比较级和最高级的构成方法如下:
规则 原级 比较级 最高级
单音节词和部分双音节词 以辅音字母+y结尾的词,去掉y,再加ier或iest early busy earlier busier earliest
busiest
多音节词和部分双音节词 在词的前面加more或者most beautiful careful more beautiful more careful most beautiful
most careful
注意:构成形容词比较级和最高级的er和est,自成一个音节,读作[ ]和[ st]。如果原级词末为不发音的字母r,加er和est时,r要发[r]音,如clear、clearer、clearest。如果原级词末的发音为[ ],加er和est时,[ ]音后得加上[ɡ]音,如long、longer、longest。
常见的形容词比较级和最高级的不规则变化如下:
原级 比较级 最高级
good better best
well better best
bad worse worst
ill worse worst
many more most
much more most
little less least
注意:有些形容词有两种比较级和最高级的变化方式。如:
clever—clever/more clever—cleverest/most clever
old—older/elder—oldest/eldest
far—farther/further—farthest/furthest
形容词比较级常见于以下句式:
1. 通常情况下,我们用“比较级+than”来引出比较的第二部分。如:
This picture is more beautiful than that one.
这幅画比那幅画更漂亮。
2. 我们用“Which … + 比较级,…or…”的句型来表示在两者中选择。如:
Which is bigger, the sun or the moon
太阳和月亮,哪个更大?
形容词比较级和最高级的常见句式
3. 我们可在比较级前加上a little、much、even等词来表示程度。如:
China is much larger than Japan.
中国比日本大得多。
4. 我们用“比较级+and+比较级”的结构来表示人或事物本身程度的改变。如:
The boys are stronger and stronger.
男孩子们越来越强壮了。
形容词最高级常见于以下句式:
1. 我们用“形容词性物主代词+最高级”的结构来表示人或事物的“最……”,如:
Peter is his oldest son. 彼得是他的长子。
注意:此时形容词的最高级前不需要定冠词the。
2. 我们用“the+最高级+比较范围”的结构来表示在某一范围内“最……”,介词of和among后面接表示范围的人或物,in后面接表示范围的名词或名词性短语。如:
I am the tallest of/among the three.
我是三个人中最高的。
Russia is the largest country in the world.
俄罗斯是世界上最大的国家。
3. 我们可以用序数词修饰形容词的最高级。如:
In the USA, the third largest city is Los Angeles.
美国的第三大城市是洛杉矶。
拓展:用形容词原级表示比较的用法。
1. as+原级+as “…和…一样”
Tom is as tall as Mike.
汤姆和麦克一样高。
2. not as/so+原级+as “和… 不一样” 或 “不及/不如…”
This shirt is not as/so cheap as that one.
这件衬衫不如那件便宜。
3. “倍数+as+原级+as” 表示“……是……的几倍”
This classroom is three times as big as that one.
这间教室是那间教室的三倍大。
当堂检测
一、写出下列形容词的比较级和最高级。
原级 比较级 最高级
helpful
tidy
wide
hot
clean
little
more helpful
most helpful
tidier
tidiest
wider
widest
hotter
hottest
cleaner
cleanest
less
least
二、用所给单词的适当形式填空。
1. John is _____________ (tall) than Sam.
2. Lin Lin is the ____________ (young) in our class.
3. She looks ______________ (thin) than me.
4. Ann felt very ____________ (happy) at her birthday party.
5. Which is ____________ (far) from us, the sun or the moon
taller
youngest
thinner
happy
farther
课堂总结
Unit 1
Period 3
重点单词:
worse, worst, weight, height, competition, test, swimmer
形容词比较级和最高级的一般构成:
1. 大多数词后加______或______;
2. 以字母e的词后加______或_______;
3. 以一个辅音字母结尾的重读闭音节,双
写最后一个辅音字母再加_____或_____;
4. 以辅音字母+y结尾的词,去掉y,再加
_____或______;
5. 在词的面前加_______或______;
er
est
r
st
er
est
ier
iest
more
most