Unit
1
The
Changing
World
Topic
2
The
population
in
developing
countries
is
growing
faster.
Section
B
一、教学目标
1.
能根据已学语音、音标及发音规则，正确朗读下列词汇并在实际的对话操练中加以应用：
population,
billion,
increase,
reach,
Russia,
luckily,
policy,
measure
2.
能够进一步掌握形容词比较级的用法，数字的表达。
3.
能够听懂有关人口话题的讨论以及较大数字的表达，并能作出正确匹配。
4.
能够用正确的表达方式讨论人口问题。
5.
增强对人口问题的认识，了解各国的人口现状。
6.
通过对比发达国家和发展中国家的人口增长情况，树立正确的人口观念。
二、教学重点及难点
重点：
1.
能根据已学语音、音标及发音规则，正确朗读下列词汇并在实际的对话操练中加以应用：
population,
billion,
increase,
reach,
Russia,
luckily,
policy,
measure
2.
能够听懂有关人口话题的讨论，并能作出正确匹配。
难点：
1.
能更快更好地听懂和朗读较大数字。
2.
能正确使用数字表达各国的人口现状。
三、教学准备
教师：教学课件；单词卡片（population,
billion等）；世界人口示意图；多媒体设备
学生：课前预习
四、教学过程
Step
1
Warming-up
After
a
short
greeting,
present
the
information
about
population
in
different
countries.
【设计意图】通过让学生分享搜集到的人口信息，培养学生整理信息、传达信息的能力。
Step
2
Pre-listening
1.
Present
the
new
words.
T:
That’s
right.
China
has
a
population
of
1.37
billion.
But
it
is
increasing
by
about
90
million
every
year.
What
a
large
population!
Luckily,
China
has
carried
out
some
policies
to
solve
it.
(Even
if
two-child
policy
just
allows
couples
who
have
only
one
child
in
their
families
to
have
a
second
child).
Do
you
know
what
the
population
of
the
USA
is?
Ss:
321
million.
T:
Yes,
the
population
in
developing
countries
is
larger
than
that
in
developed
countries.
【设计意图】引导学生理解并掌握新词，为听力活动做好准备。
2.
Teach
Ss
how
to
read
large
numbers.
And
then
get
Ss
to
read
some
numbers.
Ask
them
to
pay
special
attention
to
the
intonation.
T:
China
has
a
population
of
1.37
billion.
But
do
you
know
how
to
express
the
large
numbers
like
1,370,000,000.
First,
try
to
separate
the
number
in
groups
of
three
from
right
to
left.
Then
read
it
in
order
from
billion
to
million
and
thousand.
So,
we
can
read
this
large
number
…
(Lead
Ss
to
read
numbers
from
the
simple
numbers
to
large
ones
like
million
and
billion.)
T:
Now
you
can
have
a
try
to
read
these
numbers
by
yourselves.
【设计意图】循序渐进，由简到难，利于学生逐步掌握较大数字的正确读法。
3.
Listen
to
Part
2
and
follow.
Then
read
the
other
numbers.
T:
Now
listen
and
follow
and
pay
much
attention
to
the
intonation.
【设计意图】感知语音，熟练掌握较大数字的正确读法。
Step
3
While-listening
Listen
to
1a
and
match
the
information.
T:
There
are
so
many
people
in
the
world.
Right?
What’s
the
population
of
the
world?
T:
Maybe
some
of
us
have
learnt
about
it.
OK,
let’s
listen
to
the
recording
and
finish
1b.
T:
It’s
not
difficult.
Now
share
your
answers
with
others.
【设计意图】培养学生的语感，能更好地运用短语和句子。
Step
4
Post-listening
1.
Make
similar
conversations
after
the
example.
A:
What’s
the
population
of
the
world?
B:
It’s
about
7.2
billion.
【设计意图】有利于及时巩固所学句型。
2.
Get
Ss
to
role-play
1a
and
pay
attention
to
the
pronunciation
and
intonation.
【设计意图】感知语音语调，提升学生的朗读技巧和语言表达能力。
3.
Underline
the
useful
expressions
in1a
and
discuss
the
usage
of
them
in
groups.
T:
Read
the
conversation
again
and
underline
the
difficult
phrases
and
sentences.
You
can
look
up
them
in
the
dictionary
or
ask
your
classmates
and
teacher
for
help.
(1)
have
a
population
of有……人口
increase
by增长了……
increase
to增长到……
What’s
the
population
of
…?
……的人口是多少？
So
it
is.
确实如此。
So
is
it.
它也是这样。
carry
out贯彻；执行
the
one-child
policy独生子女政策
(2)
population
①
the
population
of
表示……的人口数，谓语动词用单数。
e.g.
The
population
of
this
city
is
nearly
300,000.
这个城市的人口将近三十万。
②
“a
population
of
+数量”表示人口数量。
e.g.
The
world
has
a
population
of
7.2
billion.世界上有72亿人口。
③
通常用large/big/small
来修饰。
e.g.
The
population
of
China
is
very
large.中国人口众多。
The
population
in
this
area
is
becoming
smaller
and
smaller.这个地区的人口越来越少。
【设计意图】学习核心句型，掌握本节课的重要知识点。
4.
Review
the
comparative
degree
and
superlative
degree
of
adjectives
or
adverbs.
T:
Just
now
we
saw
the
usages
of
comparative
degree
and
superlative
degree
of
adjectives
or
adverbs.
Now
let’s
review
together.
形容词、副词的比较级、最高级的构成规则：
(1)
一般在形容词、副词后加er表示比较级，加est表示最高级。
small
smaller
smallest
(2)
以不发音的e结尾的，只加r表示比较级，加上st表示最高级。
large
larger
largest
(3)
以辅音字母+y
结尾的，变y为i，再加er表示比较级；加est表示最高级。
early
earlier
earliest
(4)
重读闭音节单词，双写最后一个辅音字母，然后加
er表示比较级；加est表示最高级。
big
bigger
biggest
(5)
在双音节和多音节的形容词和副词前加more表示比较级；加most表示最高级。
happily
more
happily
most
happily
(6)
不规则的，如：
good/well
better
best
bad/badly
worse
worst
many/much
more
most
little
less
least
【设计意图】复习巩固所学的语法点，更有利于学生理解和掌握文章内容。
5.
Read
1a
and
fill
in
the
blanks.
【设计意图】提升学生的自学能力和克服难关的意识。
6.
Work
in
groups
and
discuss
the
population
of
the
world.
T:
Look
at
the
chart
in
Part
3
and
discuss
them.
The
questions
can
help
you.
【设计意图】巩固前面所学，提高学生的口语水平，还能增强学生对人口现状的了解。
Test
Present
the
exercises
and
let
Ss
do
some
practice.
Choose
the
best
answer.
1.
—______
is
the
population
of
Russia?
—143
million.
A.
How
much
B.
How
many
C.
What
D.
How
2.
There
are
______
students
in
our
school.
A.
three
thousands
B.
three
thousands
of
C.
three
thousand
of
D.
three
thousand
3.
—Jenny
always
helps
others.
—______.
A.
So
is
she
B.
So
she
is
C.
So
does
she
D.
So
she
does
4.
The
population
of
China
is
______
than
that
of
Japan.
A.
larger
B.
more
C.
fewer
D.
less
【设计意图】检测并强化学生对本课时内容的掌握。
Step
5
Summary
Sum
up
the
main
content
of
this
class
and
repeat
the
key
points.
We
learn:
1.
some
words:
population,
billion,
increase,
reach,
Russia,
luckily,
policy,
measure
2.
some
phrases:
in
developed/developing
countries,
have
a
population
of
…,
increase
by,
carry
out,
the
one-child
policy
3.
some
sentences:
It
says
the
world
has
a
population
of
7.2
billion.
It
is
increasing
by
90
million
every
year.
We
can:
read
the
numbers
correctly
2
346
780
two
million,
three
hundred
and
forty-six
thousand,
seven
hundred
and
eighty
【设计意图】回顾本课时的主要内容。
Step
6
Homework
1.
Read
1a
aloud.
2.
Preview
Section
C.
【设计意图】巩固课上所学，预习新课。
五、板书设计
Unit
1
The
Changing
World
Topic
2
The
population
in
developing
countries
is
growing
faster.
Section
B
population,
billion,
increase,
reach,
Russia,
luckily,
policy,
measure
in
developed/developing
countries,
have
a
population
of
…,
increase
by,
carry
out,
the
one-child
policy
218
306
5,366
736,547
8,736,062
7,198,764,501(共21张PPT)
Unit
1
The
Changing
World
Section
B
Topic
2
The
population
in
developing
countries
is
growing
faster.
Warming-up
The
information
about
the
population
in
different
countries
Look
and
talk
1,370,000,000
—1.37
billion
Pre-listening
321,000,000
—321
million
increase
v./n.
增加；增大
China
developing
countries
the
USA
developed
countries
What
a
large
population!
luckily
adv.
幸运地
policy
n.
政策
The
population
in
developing
countries
is
________
than
that
in
developed
countries.
larger
Read
and
learn
Pre-listening
one
billion,
three
hundred
and
seventy
million
First,
try
to
separate
the
number
in
groups
of
three
from
right
to
left.
Then
read
it
in
order
from
billion
to
million
and
thousand.
1
0
0
0
0
0
0
0
0
0
,
,
,
1,370,000,000
thousand
million
billion
1.37
billion
one
point
three
seven
billion
Read
and
learn
218
306
5,366
736,547
8,736,062
7,198,764,501
Pre-listening
two
hundred
and
eighteen
three
hundred
and
six
five
thousand,
three
hundred
and
sixty-six
seven
hundred
and
thirty-six
thousand,
five
hundred
and
forty-seven
eight
million,
seven
hundred
and
thirty-six
thousand
and
sixty-two
seven
billion,
one
hundred
and
ninety-eight
million,
seven
hundred
and
sixty-four
thousand,
five
hundred
and
one
Read
and
learn
543.7
five
hundred
and
forty-three
point
seven
1
562
one
thousand,
five
hundred
and
sixty-two
6
004
001
six
million,
four
thousand
and
one
7
198
764
502
seven
billion,
one
hundred
and
ninety-eight
million,
seven
hundred
and
sixty-four
thousand,
five
hundred
and
two
Pre-listening
2
Listen
and
read
the
numbers
2
Read
the
numbers
2
346
780
two
million,
three
hundred
and
forty-six
thousand,
seven
hundred
and
eighty
82
346
580
eighty-two
million,
three
hundred
and
forty-six
thousand,
five
hundred
and
eighty
405
000
000
four
hundred
and
five
million
5
555
555
555
five
billion,
five
hundred
and
fifty-five
million,
five
hundred
and
fifty-five
thousand,
five
hundred
and
fifty-five
Pre-listening
1b
Listen
to
1a
and
match
the
information.
While-listening
1.
the
world
2.
China
3.
India
4.
the
USA
A.
321
million
B.
7.2
billion
C.
1.37
billion
D.
1.31
billion
Make
similar
conversations
after
the
example.
Post-listening
Example:
A:
What’s
the
population
of
the
world?
B:
It’s
about
7.2
billion.
Post-listening
have
a
population
of
increase
by
What’s
the
population
of
…?
So
it
is.
carry
out
the
one-child
policy
Language
points
有……人口
增长了……
……的人口是多少？
确实如此。
VS.
So
is
it.
它也是这样。
贯彻；执行
独生子女政策
increase
to
增长到……
e.g.
The
population
of
this
city
is
nearly
300,000.
这个城
市的人口将近三十万。
e.g.
The
world
has
a
population
of
7.2
billion.世界上有72
亿人口。
“a
population
of
+数量”表示人口数量。
population
the
population
of
表示……的人口数，谓语动词用单数。
Post-listening
e.g.
The
population
of
China
is
very
large.
中国人口众多。
The
population
in
this
area
is
becoming
smaller
and
smaller.
这个地区的人口越来越少。
通常用large/big/small
来修饰。
Language
points
形容词、副词的比较级、最高级的构成规则：
1.
一般在形容词、副词后加er表示比较级，加est表示最高级。
small
smaller
smallest
2.?
以不发音的e结尾的，只加r表示比较级，加上t表示最高级。
large
larger
largest
3.
以辅音字母+y
结尾的，变y为i，再加er表示比较级；加est表示最高级。
early
earlier
earliest
4.
重读闭音节单词，双写最后一个辅音字母，然后加
er表示比较级；加est表示最高级。
big
bigger
biggest
Post-listening
Review
the
comparative
degree
and
superlative
degree
of
adjectives
or
adverbs.
5.
在双音节和多音节的形容词和副词前加more表示比较级；加most表示最高级。
happily
more
happily
most
happily
6.
不规则的，如：
good/well
better
best
bad/badly
worse
worst
many/much
more
most
little
less
least
Post-listening
Review
the
comparative
degree
and
superlative
degree
of
adjectives
or
adverbs.
The
world
has
a
population
of
7.2
billion
and
it
is
increasing
by
__________
every
year.
_______
has
the
largest
population.
It
has
already
reached
__________
and
India
is
_________
with
1.31
billion.
The
population
in
developing
countries
is
______
and
is
growing
________
than
that
in
developed
countries.
Luckily,
our
country
has
carried
out
some
policies
to
______
the
problem.
1c
Read
1a
and
fill
in
the
blanks.
90
million
China
1.37
billion
second
larger
faster
solve
Post-listening
3
Work
in
groups
and
discuss
the
population
of
the
world.
1.
Which
of
these
5
countries
has
the
largest/smallest
population?
What’s
the
population
of
it?
2.
What
can
you
tell
from
the
population
in
developing
countries
and
in
developed
countries?
China
has
the
largest
population.
The
population
of
China
is
1.37
billion.
Canada
has
the
smallest
population.
The
population
of
Canada
is
35
million.
The
population
in
developing
countries
is
larger
than
that
in
developed
countries.
Post-listening
3
Work
in
groups
and
discuss
the
population
of
the
world.
3.
What
problems
does
the
large
population
cause?
4.
What
measures
do
you
think
should
be
taken
to
solve
the
population
problem?
The
large
population
may
cause
less
living
space,
more
pollution
and
so
on.
Post-listening
1.
—______
is
the
population
of
Russia?
—143
million.
A.
How
much
B.
How
many
C.
What
D.
How
2.
There
are
______
students
in
our
school.
A.
three
thousands
B.
three
thousands
of
C.
three
thousand
of
D.
three
thousand
3.
—Jenny
always
helps
others.
—______.
A.
So
is
she
B.
So
she
is
C.
So
does
she
D.
So
she
does
4.
The
population
of
China
is
______
than
that
of
Japan.
A.
larger
B.
more
C.
fewer
D.
less
C
D
D
A
Post-listening
Choose
the
best
answer.
Test
Summary
We
learn:
1.
some
words:
population,
billion,
increase,
reach,
Russia,
luckily,
policy,
measure
2.
some
phrases:
in
developed/developing
countries,
have
a
population
of
…,
increase
by,
carry
out,
the
one-child
policy
3.
some
sentences:
It
says
the
world
has
a
population
of
7.2
billion.
It
is
increasing
by
90
million
every
year.
Summary
We
can:
read
the
numbers
correctly
2
346
780
two
million,
three
hundred
and
forty-six
thousand,
seven
hundred
and
eighty
Homework
1.
Read
1a
aloud.
2.
Preview
Section
C.
