中小学教育资源及组卷应用平台
Unit
7
What’s
the
highest
mountain
in
the
world?
SectionA
Grammar
focus-4c导学案
【学习目标】
1.学习并掌握词汇：Ocean,
the
Pacific
Ocean,
the
Yangtze
River等。
2.学习目标语言：
1)-What's
the
highest
mountain
in
the
world?
–Qomolangma.
-How
high
is
Qomolangma?
-It's
8,844.43
meters
high.
It's
higher
than
any
other
mountain.
3)-Which
is
the
deepest
salt
lake
in
the
world?
–The
Caspian
Sea
is
the
deepest
of
all
the
salt
lakes.
4)—Did
you
know
that
China
is
one
of
the
oldest
countries
in
the
world?
–
Yes,
I
did.
It's
much
older
than
the
US.
3.巩固学习比较级和最高级。
4.较大数字的表达。
【教学重难点】
1)
复习巩固Section
A
部分所学的生词和词组，达到熟练运用的目标。
2)
熟练掌握较大数字的表达,灵活运用比较级和最高级。
【自主预习】
复习回顾：形容词和副词的最高级的构成方法
1)
单音节词和部分双音节词：
①
一般在原级词尾加
_______
或
_______构成。
②
以e结尾只加_______或
_______构成。
③以重读闭音节结尾，且末尾只有一个辅音字母，先_______写这个辅音字母再加_______
或_______构成。
④以“辅音字母+y”结尾的双音节词,变y为_______再加_______或_______构成。
2)多音节词、以ed、ing结尾的形容词或形容词加ly，在原级前加_________或
_________构成。
注意：在形容词前加less和least
则表示"较不"和"最不"
important重要
less
important较不重要least
important最不重要
3)
不规则形容词的比较级最高级
good
/
well
_____
______
many
/
much
______
_______
little
______
______
ill
/
bad
/
badly
_________
________
far
_______
/
________
_________
/
_________
old
______
/
_______
_______
/
_________
【合作探究】
1.
小组成员大声朗读Grammar
Focus。
2.
独立完成4a,并且核对答案，然后大声朗读这部分的句子。
3.
小组合作完成4b，4c的练习。
4.
语法点：我们已经学习过形容词和副词的比较级和最高级的构成及基本用法。下面我们进一步学习与其相关的其他知识点。
◆形容词和副词比较级的修饰语
1.
比较级前可加much,
a
lot,
a
bit,
a
little,
any,
no,
some,
even,
still等词修饰。如：
You
must
work
much
faster.
You
look
a
lot
happier
than
you
did
yesterday.
He
was
too
tired
to
walk
any
further.
This
book
is
even
more
useful
than
that
one.
2.
比较级前还可加其他表示数量的词。如：
My
sister
is
ten
years
younger
than
me.
We
reached
here
two
days
earlier
than
the
others.
◆形容词和副词最高级的其他用法
1.
形容词最高级可被second,
third等序数词修饰。如：
The
building
is
the
second
tallest
in
this
city.
2.
形容词最高级常用于句型“one
of
+the+形容词最高级
+
可数名词的复数形式”，意为“最……之一”。如：
Liu
Li
is
one
of
the
most
popular
girls
in
our
class.
3.
形容词和副词的比较级和最高级可以互相转换。如：
Jane
is
taller
than
the
other
girls
/
any
other
girl
in
the
club.
=
Jane
is
the
tallest
girl
in
the
club.
This
car
runs
faster
than
the
other
ones
/
any
other
one
in
the
garage.
=
This
car
runs
the
fastest
of
all
the
cars
in
the
garage.
比较级考点
①
比较级修饰问题
a
little,
a
bit,
even,
still,
much,
a
lot,
far
等可修饰比较级。
e.g.
Tom
is
a
little
taller
than
Jim.
This
book
is
much
more
interesting
than
that
one.
②
the
+
比较级
e.g.
Lucy
is
the
fatter
of
the
two
girls.
③“a/an
+
比较级”?表示“又一，再一”
e.g.
Lily
has
a
doll,
but
she
wants?a
bigger
one.
④隐性比较（没有than的情况）
e.g.
Who
runs
faster,
Lucy
or
Lily?
You’d
better
come
earlier
next
time.
He
worked
hard
last
term,
but
he
works
even
harder
this
term.
⑤越来越......
比较级
+
and
+
比较级
b.
the
+
比较级
+
句子，the
+
比较级
+
句子
e.g.
It’s
getting
colder
and
colder.
The
more
you
exercise,
the
better
you
are.
2.
最高级考点
说明：形容词的最高级前必须加the;
副词的最高级前省略the。
①
范围问题
e.g.
Tom
is
the
tallest
student
in
the
class.
Spring
is
the
best
season
of
the
year.
②
“......之一”问题
e.g.
Beijing
is
one
of
the
biggest
cities
in
the
world.
③
“the
+
序数词
+
最高级”
e.g.
I
think
he
is
the
second
tallest
boy
in
his
class.
3.
比较级和最高级的转换
e.g.
Tom
is
the
tallest
student
in
the
class.
?
?=
Tom
is
taller
than
any
other
student
in
the
class.
?
?=
Tom
is
taller
than
all
the
other
students
in
the
class.
?
?=
No
other
students
are
taller
than
Tom.
同级比较
①
as
+
adj./adv.
+
as
e.g.
She
is
as
thin
as
Lily.
He
writes
as
carefully
as
Linda.
②
not
+
as/so
+
adj./adv.
+
as
e.g.
Tony
didn't
run
so
fast
as
Carter
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八年级下
Section
A
Grammar
Focus-4c公开课
Unit
7
What’s
the
highest
mountain
in
the
world?
Warming-up
the
highest
mountain
in
the
world.
No
mountain
is
as
high
as
Qomolangma.
higher
than
any
other
mountain.
8,844.43m
How
high?
one
of
the
most
dangerous
mountains
for
climbers.
much
Revision
The
Nile
is
the
longest
river
in
the
world.
No
river
is
as
long
as
the
Nile.
The
Nile
is
longer
than
any
other
river
.
6,671km
How
long?
much
the
deepest
salt
lake
in
the
world.
No
river
is
as
deep
as
the
Caspian
sea.
much
deeper
than
any
other
salt
lake
in
the
world.
1,025m
How
deep?
is
the
biggest
desert
in
the
world.
No
desert
is
as
big
as
the
Sahara.
is
much
bigger
than
any
other
desert
in
the
world
9,600,000k㎡
How
big/large?
million
thousand
square
kilometers
Tell
your
partner
what
you
know
about
them.
8844.43m
the
highest
much
higher
than...
as...as
one
of
the...
6671km
the
longest
longer
than
...
as...as
one
of
the...
1025m
the
deepest
deeper
than
...
as...as
one
of
the...
9,600,000k㎡
the
biggest
bigger
than
...
as...as
one
of
the...
根据课本内容,完成下列句子。
1.
世界上哪座山最高？
What’s
the
_______
mountain
in
the
world?
2.
珠穆朗玛峰最高。
Qomolangma.
3.
珠穆朗玛峰多高？
____________
is
Qomolangma?
4.
它高8,844.43米。它比任何一座山都高。
It’s
8,844.43
meters
_____.
It’s
_______
than
____________mountain.
highest
How
high
high
higher
any
other
5.
世界上哪一个咸水湖最深？
Which
is
the
_________
salt
lake
in
the
world?
6.
在所有的咸水湖中里海最深
The
Caspian
Sea
is
the
________
______
_______the
salt
lakes.
7.
你知道中国是世界上最古老的国家之一吗?
Did
you
know
that
China
is
one
of
the________
_________
in
the
world.
8.
是的。它比美国历史悠久的多。
Yes,
I
did.
It’s
_______
________
than
the
US.
deepest
deepest
of
all
oldest
countries
much
older
Grammar
Focus
What’s
the
highest
mountain
in
the
world?
Qomolangma.
How
high
is
Qomolangma?
It’s
8,844.43
meters
high.
It’s
higher
than
any
other
mountain.
Which
is
the
deepest
salt
lake
in
the
world?
The
Caspian
Sea
is
the
deepest
of
all
the
salt
lakes.
Did
you
know
that
China
is
one
of
the
oldest
countries
in
the
world?
Yes,
I
did.
It’s
much
older
than
the
US.
Find
the
comparatives
and
superlatives.
此句型用比较级表达最高级含义
一、形容词、副词的比较级和最高级
概述：英语中的形容词和副词常用三种形式来表达事物的等级差别，即原级、比较级和最高级。
原级（Positive
form）：没有比较含义，“……”；
比较级（Comparative
form）：两者间比较，“更……”；
最高级（Superlative
form）：三者及三者以上比较，“最……”。
注意：某些形容词和副词只用原级，如：perfect，excellent，dead等。
最高级用于三者或三者以上的人或物之间的比较，表示“最……”形容词最高级前一般要加定冠词the，副词最高级前的the可以省略。
规则变化
①直接加
-er
或
-est
tall—_____—______
long—______—______
②以不发音的字母e结尾的单词直接加
-r
或
-st
③以“辅音字母+y”
结尾,把y变为i,再加
-er
或-
est
nice—______—______
heavy—________—________
taller
tallest
longer
longest
nicer
nicest
heavier
heaviest
④重读闭音节（末尾只有一个辅音字母）
双写辅音字母再加
-er或
-est
⑤部分双音节词和多音节词
分别在原级前加more构成比较级和most构成最高级
big—_______—_______
slowly—___________—___________
beautiful—______________—______________
bigger
biggest
more
slowly
most
slowly
more
beautiful
most
beautiful
原级
比较级
最高级
good
/
well
better
best
bad
worse
worst
many/much
more
most
little
less
least
old
older/elder
oldest
/
eldest
far
Farther
(更远)/
Further
(进一步的)
farthest
/
furthest
不规则变化
原级比较
句型
例句
1.as+形容词/副词原形+as
Lucy
is
as
tall
as
Lily.
露西和莉莉一样高。
2.not
+as/so+形容词/副词的原形+as
Lucy
is
not
as/so
tall
as
Lily.
露西不如莉莉高。
3.倍数+as+形容词/副词原形+as
Our
school
is
three
times
as
big
as
theirs.
我们的学校是他们的三倍大。
原形
比较级的用法：
比较
级
句型
例句
1.双方比较，表示一方超过另一方时，用“比较级+than”结构
China
is
larger
than
Italy.
中国比意大利大。
This
book
is
more
interesting
than
that
one.
这本书比那本书有趣。
2.用于“less+原级+than”（注意此结构不用于单音节词）
The
book
is
less
interesting
than
that
one.
这本书不如那本书有趣。
3.“倍数+比较级+than”
The
box
is
three
times
bigger
than
that
one.
这个箱子是那个的三倍大。
much,
a
lot,
a
bit,
a
little，a
little
bit，even可修饰比较级
最高级
句型
例句
1.the+形容词/副词最高级+名词+范围
Spring
is
the
best
season
of
the
year.
春天是一年中最好的季节。
(2)“one
of
the+最高级+名词复数”，表示“最……之一”
Kobe
is
one
of
the
best
basketball
players
in
NBA.
科比是NBA最好的篮球运动员之一。
复数
范围
注意：
1.“比较级+than
any
other+可数名词单数”
=“比较级+than
the
other+可数名词复数”
表示“比其他任何……都……”,
表示最高级含义，
可与表示最高级的句子进行转换。
My
father
is
the
tallest
one
in
my
family.
=My
father
is
taller
than
any
other
member
in
my
family.
=My
father
is
taller
than
the
other
members
in
my
family.
2.
序数词通常只修饰最高级。
例如：Africa
is
the
second
largest
continent.
非洲是第二大洲。
最高级的意义有时可以用比较级表示出来。
例如：
This
car
runs
(the)
fastest
of
all
the
cars.
=
This
car
runs
faster
than
the
other
cars.
=
This
car
runs
faster
than
any
other
car.
其他所有车
其他任何一辆车
二、大数字的表达和读法
大于1000的基数词的表达法：
①从数字的右端向左数，每三位数加一个逗点；
②第一个逗点前的数为thousand（千），
第二个逗点前的数为million（百万），
第三个逗点前的数为billion（十亿）。
③读的时候通常在hundred后加and，如果百位数为0，则在thousand后加and。
④英语没有“万”这个单位，要表示“万”须借用
thousand，如“一万”用“十个千（ten
thousand）”
表示，“十万”用“百个千（one
hundred
thousand）”表示。
2674
2,
674
thousand
and
two
thousand
six
hundred
and
seventy-four
hundred
1.
从数字右端向左数，每三位数加一个逗点；
2.
第一个逗点前的数为thousand（千）；
3.
读的时候通常在hundred后加and。
18357089
18,357,089
million
and
eighteen
million,
three
hundred
and
fifty-seven
thousand,
and
eighty-nine
thousand
1.
从数字右端向左数，每三位数加一个逗点；
2.
第一个逗点前的数为thousand（千）；第二个逗点前的数为million（百万）；
3.
读的时候通常在hundred后加and，如果百位数为0，则在thousand后加and。
8,844.43
30,000
7,000
eight
thousand
eight
hundred
and
forty-four
point
four
three
thirty
thousand
Can
you
read
these
large
numbers?
seven
thousand
61,021
sixty-one
thousand
and
twenty-one
Reversal
Game
Reversal
Game
1,430,672
2,760,431
one
million,
four
hundred
and
thirty
thousand,
six
hundred
and
seventy-two
two
million,
seven
hundred
and
sixty
thousand,
four
hundred
and
thirty-one
1,000
30,000
9,600,000
1,025
6,671
1,000,6
8,
888
6,000
800
5465
65
13
Read
the
missing
number
quickly.
What
is
the
largest/smallest
number
in
the
game?
Game
1.
The
Amazon
River
is
one
of
the
_________
rivers
in
the
world.
It’s
a
little
________
than
the
Yangtze
River.
2.
Qomolangma
is
8,844.43
meters
_______.
It’s
one
of
the
most
__________
places
for
serious
mountain
climbers.
3.
No
ocean
in
the
world
is
as
________
as
the
Pacific
Ocean.
4.
Although
Japan
is
_______
than
Canada,
it
is
________
smaller.
Fill
in
the
blanks
with
the
correct
forms
of
the
words
in
the
box.
4a
big
much
popular
long
old
high
longest
longer
high
popular
big
older
much
太平洋
n.
大海，海洋
Make
comparisons
according
to
the
table.
the
Nile
River
the
Amazon
River
the
Yangtze
River
the
Yellow
River
6,671
km
6,480
km
6,300
km
5,464
km
The
Nile
River
is
the
longest
river
in
the
world.
No
river
in
the
world
is
as
long
as
the
Nile
River.
The
Amazon
River
is
one
of
the
longest
rivers
in
the
world.
The
Amazon
River
is
a
little
longer
than
the
Yangtze
River.
The
Nile
River
is
much
longer
than
the
Yellow
River.
Write
two
comparisons
about
two
topics.
Write
true
facts.
4b
e.g.
Two
rivers:
the
Yangtze
River
and
the
Amazon
River
The
Yangtze
River
is
almost
as
long
as
the
Amazon
River.
The
Amazon
is
longer
than
the
Yangtze,
but
the
Yangtze
is
the
longest
river
in
China.
Two
cities:
________________
and
_______________
________________________________________________
________________________________________________
________________________________________________
Two
animals:
________________
and
_______________
________________________________________________
________________________________________________
________________________________________________
Singapore
Kuala
Lumpur
Kuala
Lumpur
is
as
modern
as
Singapore.
Singapore
is
bigger
than
Kuala
Lumpur
and
has
a
larger
population
than
Kuala
Lumper.
Rabbit
Snail
A
rabbit
is
bigger
than
a
snail.
A
snail
is
a
lot
smaller
than
a
rabbit,
and
it
runs
much
slower
than
a
rabbit.
Write
five
questions
using
comparisons.
Then
ask
your
partner
your
questions.
4c
1.
________________________________________________________
2.
________________________________________________________
3.
________________________________________________________
4.
________________________________________________________
5.
________________________________________________________
What
is
the
highest
building
in
our
city?
What
is
the
busiest
subway
station
in
our
city?
What
is
the
largest
shopping
mall
in
our
city?
Which
is
the
biggest
park
in
our
city?
Which
is
the
longest
road
in
our
city?
Which
place
is
the
best
for
our
school
trip?
Our
school
is
going
on
a
school
trip
in
the
city.
Which
is
the
best
place
to
go
to?
Can
you
give
some
advice
and
why?
Work
in
groups
of
5
and
report
to
the
class.
Remember
to
use
comparisons.
Example:
We
think
______
is
the
best
place
for
us
to
go
on
a
school
trip.
Of
all
the
places,
it
is
the
________.
And
we
can
also
______
.
So
we
all
think
it
is
a
good
idea
to
visit________________.
谢谢
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