(共26张PPT)
Unit
1
The
Changing
World
Section
C
Topic
2
The
population
in
developing
countries
is
growing
faster.
8
88
888
8,888
88,888
888,888
8,888,888
88,888,888
888,888,888
8,888,888,888
88,888,888,888
888,888,888,888
Tongue
twister
Warming-up
Read
these
numbers
Pre-reading
1.
Why
does
China
carry
out
the
one-child
policy?
2.
What
social
problems
do
you
think
China’s
large
population
has
caused?
Population
Problem
人口问题
adj.
社会的
1a
Look
at
the
pictures
and
discuss
the
questions
in
pairs.
1b
Read
1a
and
match
the
main
idea
with
each
paragraph.
1.
_____
Paragraph
1
A.
the
measures
to
deal
with
the
problems
2.
_____
Paragraph
2
B.
the
world’s
and
Asia’s
population
3.
_____
Paragraph
3
C.
the
problems
caused
by
large
population
B
C
A
While-reading
1c
Read
1a
again
and
complete
the
table.
Population
of
China
____________________
Social
problem
less
______________
fewer
_______
opportunities
less
_______
and
______
crowded
________
heavy
_________
________
natural
environments
Government
measure
___________________________
1.37
billion
job
water
energy
cities
traffic
worse
the
one-child
policy
and
others
living
space
While-reading
opportunity
n.
机会
nature
n.
自然
natural
adj.
自然的
Asia
has
a
population
of
_________________.
That’s
to
say,
more
than
______
of
the
world’s
population
live
in
Asia
now.
Read
Paragraph
1
and
fill
in
the
blanks.
more
than
4
billion
half
Paragraph
1
The
world’s
and
Asia’s
population.
While-reading
Paragraph
2
The
problems
caused
by
large
population.
About
one
fifth
of
the
people
in
the
world
live
in
China.
What
social
problems
has
it
caused?
While-reading
Read
Paragraph
2
and
fill
in
the
blanks.
Because
of
the
large
population,
there
is
__________________
for
each
family.
less
living
space
Read
Paragraph
2
and
fill
in
the
blanks.
While-reading
because
of
+
n./短语
因为；由于
because
+
句子
因为；由于
Because
of
the
large
population,
it
is
difficult
for
lots
of
people
__________________.
to
find
jobs
While-reading
Read
Paragraph
2
and
fill
in
the
blanks.
Because
of
the
large
population,
it
is
hard
for
China
to
supply
_______
and
______
to
satisfy
people’s
daily
needs.
energy
satisfy
…
needs
满足……的需求
While-reading
Read
Paragraph
2
and
fill
in
the
blanks.
water
Because
of
the
large
population,
most
cities
are
__________
_________
than
before,
and
the
traffic
is
much
__________.
more
crowded
heavier
While-reading
Read
Paragraph
2
and
fill
in
the
blanks.
Because
of
the
large
population,
natural
environments
are
becoming
___________________.
worse
and
worse
worse
and
worse
越来越糟糕
While-reading
Read
Paragraph
2
and
fill
in
the
blanks.
Paragraph
3
The
measures
to
deal
with
the
problems.
The
one-child
policy
—
Every
couple
can
have
only
one
child.
So
far,
the
one-child
policy
has
worked
well
in
controlling
China’s
population.
We
still
have
a
long
way
to
go.
While-reading
work
well
in
doing
sth.
在……方面起明显的作用
Read
Paragraph
3
and
understand
the
meaning
of
the
one-policy.
past
now
so
far
So
far,
I
have
read
five
English
novels.
Post-reading
Language
points
Post-reading
one/a
half
a
quarter
three
quarters
three
and
a
half
Language
points
one
sixth
five
sixths
one
twentieth
seven
twentieths
Post-reading
分数后面的谓语动词的单复数和分数词之后的名词的数保持一致：
Three
fifths
of
the
students
in
our
class
are
girls.
Three
fifths
of
the
bread
has
gone
bad.
Language
points
So
far,
our
government
has
taken
many
measures
to
control
the
population.
One
was
known
as
the
one-child
policy.
Thanks
to
the
policy,
China
is
developing
quickly
…
Post-reading
take
measures
to
do
sth.
采取措施做某事
be
known
as
=
be
famous
for
作为……而出名
thanks
to
+
sb./sth.
幸亏……
Language
points
population
people
person
1.
What
is
the
population
of
China?
（一般情况下用作单数）
Three
quarters
of
the
population
of
China
are
farmers.
（强调总人口中的一部分人时用作单数）
2.
people是复数，person是单数。
The
people
in
the
country
work
hard.
The
person
in
the
country
works
hard.
Post-reading
Language
points
Every
minute,
about
261
babies
are
born
in
the
world.
That
means
people
have
to
_____
food
for
about
375,840
newborn
babies
every
day.
The
world’s
population
_________________
very
fast.
It
has
_______
one
of
the
biggest
social
problems
today.
China
______
the
largest
population
in
the
world.
There
are
about
1.37
billion
people
in
China.
It
has
________
20
percent
of
the
world’s
population.
China
has
____________
some
policies
to
solve
the
population
problem,
and
these
policies
have
_______
well.
But
China
still
_______
a
serious
population
problem.
Complete
the
following
passage
with
the
correct
forms
of
the
given
words
or
phrases.
find
grows/is
growing
become
carried
out
reached
grow
reach
have
find
work
become
face
carry
out
has
worked
faces
Post-reading
3a
Work
in
groups
and
search
for
the
information
about
the
following
questions.
Then
write
a
short
passage
based
on
them.
1.
How
do
you
think
we
can
get
more
living
space?
2.
What
should
the
government
do
to
offer
more
job
opportunities?
3.
Water
and
energy
are
less
and
less.
What
should
we
do
to
deal
with
it?
4.
The
traffic
in
cities
is
much
heavier
than
before.
How
can
we
solve
the
problem?
Post-reading
One
possible
version:
China
has
the
largest
population
in
the
world.
It
has
caused
many
problems.
Everyone
should
do
something
to
solve
them.
First,
the
government
should
keep
the
one-child
policy
to
control
the
increasing
population,
and
practice
the
reform
and
opening-up
to
develop
our
economy.
Only
in
this
way
can
we
get
more
jobs
and
improve
our
living
conditions.
Second,
the
energy
and
water
is
becoming
less
and
less.
We’d
better
save
them
as
much
as
possible,
and
try
to
find
more
new
energy.
In
order
to
solve
the
problem
of
heavy
traffic,
we
call
on
everyone
to
take
a
bus
or
walk
as
often
as
possible.
Post-reading
1.
_____
of
the
students
are
boys
in
our
school.
A.
Two
third
B.
Two
threes
C.
Two
thirds
D.
Second
three
2.
The
one-child
policy
has
_____
controlling
China’s
population.
A.
been
good
at
B.
done
well
in
C.
taken
care
of
D.
worked
well
in
3.
Edison
is
known
_____
a
great
inventor.
A.
for
B.
as
C.
in
D.
on
4
.
_____
your
help,
I
made
great
progress
in
math.
A.
Thanks
for
B.
Thanks
to
C.
Thank
to
D.
Thank
for
C
D
B
B
Post-reading
Choose
the
best
answer.
Test
Summary
We
learn:
1.
some
words:
social,
supply,
natural,
worse,
government,
paragraph,
opportunity,
newborn,
percent,
offer,
2.
some
phrases:
so
far,
take
measures
to
do
sth.,
because
of/thanks
to,
one
fifth
of,
work
well
in
(doing)
sth.
3.
some
sentences:
About
one
fifth
of
the
people
in
the
world
live
in
China.
Because
of
the
large
population,
there
is
less
living
space
for
each
family
Summary
We
can:
talk
about
cause
and
effect
Because
of
the
large
population,
it
is
difficult
for
lots
of
people
to
find
jobs.
At
the
same
time,
the
large
population
has
caused
many
other
difficulties
for
the
whole
nation.
Homework
1.
Read
1a
aloud.
2.
Preview
Section
D.Unit
1
The
Changing
World
Topic
2
Section
C
教案
Teaching
aims
and
demands
1.
Learn
the
new
words
and
useful
expression:
difficulty,
so
far,
percent,
offer.
2.
Talk
about
the
problems
the
overpopulation
brings
about:
(1)It’s
difficult
for
lots
of
people
to
find
jobs.
(2)We
are
short
of
energy
and
water.
(3)Most
cities
are
more
crowded
than
before,
and
the
traffic
is
much
heavier.
3.
Get
students
to
know
how
serious
the
world’s
population
problem
is.
Teaching
aids
录音机/多媒体/小黑板/图片
Teaching
Plan
Step
1
Review
1.
T:
Yesterday
I
told
you
to
write
an
article
about
the
population
problem.
Now
I’ll
check
your
homework.
Please
read
your
article
in
groups,
then
choose
some
better
sentences
and
share
them
with
us.
(四人一小组讨论中国未来的人口问题导致的后果，选出较好的句子，由每组一个学生说，教师总结写在黑板上。)
2.
T:
Your
articles
are
wonderful.
You
say
a
lot
of
problems
about
population.
It
is
a
serious
problem
in
China.
Yes,
because
of
the
large
population,
it
has
caused
many
problems.
Such
as:(教师总结)
(1)
There
are
fewer
places
for
each
family
to
live
in.
(2)
It’s
difficult
to
find
a
job
for
lots
of
people.
(3)
We
are
short
of
energy
and
water.
(4)
Most
of
the
cities
are
more
crowded
than
before
and
the
traffic
is
heavier.
3.
T:
What
can
we
do
with
the
large
population
in
China?
Can
you
tell
me?
Ss:
One-child
policy.
T:
You
are
right.
China
has
taken
some
measures
to
control
the
population.
One
is
known
as
the
one-child
policy.
It
has
worked
well
in
controlling
China’s
population.
T:
Thanks
to
the
policy,
China
is
developing
quickly
and
people’s
living
conditions
are
improving
rapidly.
Step
2
Presentation
1.
T:
Open
your
books,
and
listen
to
1a
for
the
two
questions:
(1)
Why
does
China
carry
out
the
one-child
policy?
(2)
What
problems
do
you
think
China’s
large
population
will
cause?
(让学生自己阅读一遍，然后回答第一个问题。)
T:
Now.
Who
can
answer
the
first
question?
S1:
I
can.
Because
China
has
the
largest
population
in
the
world.
T:
You
are
wonderful.
How
many
people
are
there
in
China?
Ss:
There
are
1.
3
billion.
T:
And
how
many
people
are
there
in
the
world?
Ss:
There
are
about
6.
5
billion.
T:
Yes.
There
are
about
one
fifth
of
the
people
in
the
world
living
in
China.
T:
What
problems
will
the
large
population
cause?
S2:
It’s
difficult
to
find
jobs
for
lots
of
people.
T:
Yes.
Any
more?
Who
can
add?
S3:
We
are
short
of
energy
and
water.
T:
You
are
wonderful.
They
are
two
serious
problems.
T:
What
about
cities’
traffic?
S4:
The
traffic
is
heavier,
and
most
cities
are
more
crowded.
T:
Very
good.
Luckily,
China
has
carried
out
the
one-child
policy
to
control
its
population.
Now,
China
is
developing
quickly
and
people’s
living
conditions
are
improving
rapidly.
2.教师再放一遍录音,
让学生跟着录音一起读。
Step
3
Consolidation
1.
T:
Boys
and
girls,
please
read
1a
again
and
then
retell
it
according
to
the
key
words
on
the
blackboard.
(学生阅读1a的同时,
教师把关键词列在黑板上。)
6.
5
million
3
billion
half
one
fifthcause
difficulties
take
measures
one-child
policywork
well
in
living
conditions
seriousa
long
way
让两位同学看着黑板上的关键词复述1a,
当学生表达错误时,
教师给予纠正,
当学生表达不出时,
教师或全班同学给以帮助,
以利于提高学生口语复述能力。
2.
T:
Let’s
look
at
1b
(work
alone).
Describe
the
disadvantages
of
China’s
large
population
according
to
1a
and
write
them
down.
You
have
two
minutes.
(给学生两分钟完成,
然后让五位学生到黑板上写。)
T:
Now
I
will
ask
five
students
to
write
your
answers
on
the
blackboard.
S1:
Fewer
places
to
live
in.
S2:
Difficult
to
find
jobs
for
lots
of
people.
S3:
Short
of
energy
and
water.
S4:
Most
cities
are
more
crowded.
S5:
The
traffic
is
heavier.
T:
Your
answers
are
very
wonderful.
You
have
understood
most
of
the
text.
Step
4
Homework
Make
a
survey
and
complete
the
chart,
then
write
a
survey
report.
You
can
search
the
information
on
the
Internet.
City
Population
Roads
Living
conditions
Beijing
Tokyo
Toronto
New
York
Your
city
