Unit 4 What's the best movie theater? Section A 1a-2d课件(共21张PPT)

(共21张PPT)
Unit 4
What’s the best movie theater
Section A 1a-2d
形容词最高级的构成
tall
taller
tallest
He is the tallest in our class.
形容词比较级和最高级的构成
一、1.规则变化
一般情况下，单音节或双音节的形容词比较级直接加-er, 最高级直接加-est。如：
clever—cleverer—cleverest
cheap—cheaper—cheapest
few—fewer—fewest
small—smaller—smallest
young—younger—youngest
late
later
Mark slept yesterday.
Sam slept yesterday.
latest
late
later
Tom slept the yesterday.
latest
2. 以-e 结尾的形容词，比较级+ -r,最高级+ -st。
如large—larger—largest nice—nicer—nicest
cute—cuter—cutest
This apple is the biggest of all.
big
bigger
biggest
3. 以重读闭音节结尾，末尾只有一个辅音字母结
尾的词，双写最后一个辅音字母，再加 er变成比较级 ；+ est变成最高级。 如：
big—bigger—biggest thin—thinner—thinnest
fat—fatter—fattest hot—hotter—hottest
Lichen
ChenHe
Lichen is funny.
funny
funnier
Chenhe is funnier
Zhao Benshan
Zhao benshan is the funniest of the three.
funniest
4. 以辅音字母+y结尾的形容词，变y为i +er或+est。
busy—busier—busiest
heavy—heavier—heaviest
easy—easier—easiest
happy—happier—happiest
dirty—dirtier—dirtiest
10 yuan
20 yuan
50 yuan
This pen is the most expensive of the three.
expensive
more expensive
5. 多音节和部分双音节形容词，需在原级前+more
构成比较级，+ most 构成最高级。如：
important—more important—most important
beautiful—more beautiful– most beautiful
difficult—more difficult—most difficult
This car is the best of the three.
good
better
形容词比较级和最高级的构成
不规则变化：
best
二. 不规则变化：
原级 比较级 最高级
good /well better best
bad /ill worse worst
little less least
many /much more most
far farther /further farthest /furthest
old older /elder oldest /eldest
1.表示三者或三者以上比较,可用”Which/Who …
+最高级,…,…or … ”表示.
2. 最高级+of/among (同类比较) in… (范围比较)
4.one of +
形容词最高级
+名词复数表示“最… 之一”
3. 序数词修饰最高级
形容词和副词的最高级的用法
Who is the tallest, Tom , Mike , or Jack
Tom is the tallest of the three.
Mike is the second tallest student in our class.
Jack is one of the tallest students in our class.
Tom runs (the) fastest in our class.
3. Lin Tao is __________________________ in the class because he never gets to school on time. （最懒的学生之一）
one of the laziest students
The Yangtze River is__________________ river in the world. (第三长河）
the third longest
2. The Atlantic is __________________
ocean in the world. ( 第二大洋）
the second biggest
Exercise:
一、翻译句子：
4. She works ________________ (careful) in her school.
5. Who goes to bed _________ (late) Jim, Tom or Jack
6. I think turkey is ________________ (delicious) of all.
the most carefully
latest
the most delicious
形容词比较级和最高级的构成
一、规则变化
1. 一般情况下，单音节或双音节的形容词比较级直接加-er,最高级直接加-est。
2. 以-e 结尾的形容词，比较级+ -r,最高级+ -st。
3 . 以重读闭音节结尾，末尾只有一个辅音字母结 尾的词，双写最后一个辅音字母，再加 er变成比较级 ；+ est变成最高级。
4. 以辅音字母+y结尾的形容词，变y为i +er或+est。
5. 多音节和部分双音节形容词,需在原级前+more构成比较级，+ most 构成最高级。
二. 不规则变化：
原级 比较级 最高级
good /well better best
bad /ill worse worst
little less least
many /much more most
far farther /further farthest /furthest
old older /elder oldest /eldest
1.Hainan is a very large Island .It is the
second _________ island in china. (large)
2.He is ______________ among us. (careful)
3.I think Yao Ming is one of ____________
basketball players in NBA. (hot)
the most careful
largest
the hottest
Homework、完成句子
1Dick sings_______，she sings _______than John，but Mary sings _______ in her class.(well)2He is _______ at learning math.He is much _______ at Chinese and he is the _______ at English.(bad)3Annie says Sally is the _______ (kind) person in the world.4The white flower is _______．The yellow flower is _______ than the white flower.The red flower is _______ of the three.(beautiful)5．He is _______(clever) than any other boy in the class.
Thank You!