(共43张PPT)
Unit
13
We
are
trying
to
save
the
earth.
The
earth
is
polluted.
Because
of
pollution,
our
sky
isn’t
blue
any
more.
pollute
v.
污染
pollution
n.
Because
of
pollution,
the
water
isn’t
clean
any
more.
Because
of
pollution,
more
and
more
people
suffer
from
cancer.
遭受…的痛苦
Because
of
pollution,
many
animals
were
killed.
Because
of
pollution,
more
and
more
animals
don’t
have
places
to
live
in.
air
pollution
The
factories
that
burn
coal
pollute
the
air
with
a
lot
of
black
smoke.
n.
煤炭
Can
you
think
of
the
different
kinds
of
pollution?
Factories
put/pour
waste
into
the
river.
water
pollution
noise
pollution
There
are
more
cars
on
the
road.
litter
v.
乱扔
n.
垃圾
rubbish，
waste
垃圾，废弃物
People
should
throw
away
litter
in
the
bin.
n.
垃圾箱
land
pollution
1a
Here
are
some
words
related
to
different
kinds
of
pollution.
Write
them
in
the
box
below.
Then
add
more
words.
loud
music
cars
rubbish
planes
littering
ships
factories
smoking
building
houses
mobile
phones
和…有关的
be
related
to
noise
pollution
____________
____________
____________
____________
cars
air
pollution
___________
___________
___________
___________
water
pollution
____________
____________
____________
____________
loud
music
planes
mobile
phones
factories
cars
smoking
ships
factories
littering
rubbish
building
houses
building
houses
1b
Listen
and
complete
the
sentences.
What
was
the
problem?
The
river
was
_____________.
Even
the
bottom
(底部)
of
the
river
was
full
of
_________.
There
were
no
more
______
for
fishermen
(渔民)
to
catch.
really
dirty
rubbish
fish
What
caused
the
problem?
People
are
throwing
_______
into
the
river.
Factories
are
putting
______
into
the
river.
How
should
the
problem
be
solved?
We
should
write
to
the
____________
and
ask
them
to
___________
the
factories.
Everyone
should
help
to
__________
the
river.
litter
waste
government
close
down
clean
up
Mark:
The
river
was
dirty.
Even
the
bottom
of
the
river
was
full
of
rubbish.
Tony:
But
it
used
to
be
so
clean!
Mark:
Yes,
but
people
are
littering
in
the
river.
Tony:
Everyone
in
this
town
should
play
a
part
in
cleaning
it
up!
Role-play
the
conversation.
Then
make
your
own
conversations
about
the
kinds
of
pollution
in
1a.
1c
play
a
part
in
参与…;在…方面起作用
2a
Listen
to
the
interview.
Circle
the
kinds
of
pollution
that
Jason
and
Susan
talk
about.
land
pollution
B.
air
pollution
C.
noise
pollution
D.
water
pollution
2b
Listen
again
and
complete
the
sentences.
1.
The
air
is
badly
polluted
because
there
are
___________
on
the
road
these
days.
2.
Factories
that
burn
coal
also
________
the
air
with
a
lot
of
black
smoke.
more
cars
pollute
3.
There
is
also
too
much
rubbish
and
waste.
People
_________________
things
every
day.
4.
People
are
also
littering
in
______________
like
parks.
This
is
turning
beautiful
places
into
ugly
ones.
are
throwing
away
public
places
丑陋的
Jason:
The
air
has
become
really
polluted
around
here.
I’m
really
getting
worried.
Susan:
Yes,
I
used
to
be
able
to
see
stars
in
the
sky.
Jason:
The
problem
is
that
...
Use
the
information
in
2a
and
2b
to
role-play
conversations
between
Jason
and
Susan.
2c
Help
save
the
earth
We
must
think
of
better
ways
to
save
our
planet
.
What
should
we
do
to
save
the
earth?
You
should
throw
the
litter
in/into
the
bins.
We
can
/could
recycle
the
cans
and
bottles.
That’s
good
for
the
environment.
回收利用
Don’t
throw
away
old
books
and
newspapers.
You
can
recycle
them.
In
this
way,
we
can
save
paper.
When
you
write
on
the
paper,
remember
to
write
on
both
sides.
/
To
save
paper,
we
should
use
paper
on
both
sides.
You
had
better
use
your
own
bag
when
(you
are)
shopping.
You’d
better
not
use
plastic
bags,
it’s
bad
for/harmful
to
the
environment.
We
can
take
a
bus
instead
of
riding
in
cars.
Jason
and
Susan,
what
are
your
ideas
for
solving
these
problems?
interviewer
采访者
Read
the
conversation
and
complete
the
chart.
Problems
Solving
problems
air
pollution
waste
pollution
wooden
(木头的)
chopsticks
or
plastic
forks
rubbish
take
the
bus,
subway
or
ride
a
bike
instead
of
driving.
bring
a
bag
to
go
shopping.
use
chopsticks
or
forks
at
home.
throw
rubbish
in
the
bins.
Interviewer:
Jason
and
Susan,
what
are
your
ideas
for
solving
these
problems?
Jason:
Well,
to
cut
down
air
pollution,
we
should
take
the
bus
or
subway
instead
of
driving.
Susan:
Yeah,
or
ride
a
bike.
There
are
other
advantages
of
bike
riding
.
It’s
good
for
health
and
it
doesn’t
cost
anything!
2d
Role-play
the
conversation.
减少
而不是
Interviewer:
Great
ideas!
What
about
waste
pollution?
Susan:
Mmm,
I
think
simple
things
like
bringing
a
bag
to
go
shopping
can
help.
I
started
doing
that
a
year
ago.
Jason:
Me,
too.
Also,
I
never
take
wooden
chopsticks
or
plastic
forks
when
I
buy
takeaway
food.
I
use
the
ones
at
home.
Susan:
And
remember
to
throw
rubbish
in
the
bins
and
keep
public
places
clean
and
beautiful
for
everyone.
Interviewer:
So
together,
our
actions
can
make
a
difference
and
lead
to
a
better
future!
有影响；起作用
lead
to
导致；通向
make
a
difference
(to…)
表示(对……)产生影响或作用
e.g.
The
new
teacher
always
encourages
little
Tom.
This
has
made
a
big\great
difference
to
him.
新来的老师总是鼓励小汤姆，这对他影响很大。
辨析take,
spend,
pay
&
cost
take，spend，pay和cost都可以表示“花
费”，但它们的用法各有不同。
1)
take多表示花费时间，常用于It
takes
sb.
some
time
to
do
sth.这一句型中，其中it作形式主语。
e.g.
It
usually
takes
me
40
minutes
to
cook
the
dinner.
2)
spend多表示花费时间和金钱，主语通常是人，常用于sb.
spend(s)
some
time
/
money
on
sth.和sb.
spend(s)
some
time
/
money
(in)
doing
sth.两种句型。
e.g.
David
spent
2,000
yuan
on
the
new
machine.
My
father
spends
an
hour
(in)
watching
the
news
on
TV
every
day.
3)
pay多表示花费金钱，主语通常是人，常用于sb.
pay(s)
some
money
for
sth.句型。
e.g.
Tommy
paid
20
yuan
for
his
breakfast
yesterday.
4)
cost多表示花费金钱，主语通常是物，常用于sth.
cost(s)
(sb.)
some
money.句型。
e.g.
The
new
dress
cost
Linda
88
yuan.
根据句意用take,
spend,
pay或cost的适当
形式填空。
1.
That
new
car
________?them
lots
of
money.
2.
Mona
__________
50
yuan
on
the
books
just
now.
3.
It
usually
_______?
me
an
hour
to
do
my
homework.
cost??
spent?
takes
4.
You
should
__________?
some
time
practising
your
pronunciation.
5.
My
brother
_______?6,
000
yuan
for
the
new
computer
yesterday.
spend
paid
Jason
and
Susan,
what
are
your
ideas
for
solving
these
problems?
Jason
and
Susan
are
talking
about
how
to
solve
pollution.
To
cut
down
air
pollution,
we
should
_______________________________
_______________.
Bike
riding
___________
______
and
it
doesn’t
_____________.
As
for
waste
pollution,
Susan
thinks
simple
things
like
___________________________
can
help.
Jason
never
____________________________
_____________
when
he
buys
takeaway
food.
Susan
suggests
that
we
should
____________
in
the
bins
and
keep
pubic
places
clean.
ride
a
bike,
take
the
bus
or
subway
instead
of
driving
is
good
for
health
cost
anything
bringing
a
bag
to
go
shopping
takes
wooden
chopsticks
or
plastic
forks
throw
rubbish
be
related
to…
与……有关
the
bottom
of
the
river
河底
be
full
of
充满……
throw
litter
into
the
river
把垃圾扔到河里
ask
sb.
to
do
要求某人干某事
close
down
the
factories
关闭工厂
clean
up
打扫;清理
used
to
be…过去是…
play
a
part
in…参与，在……中扮演角色
10.
be
badly
polluted
受到严重污染
11.
public
places
公共场所
12.
turn…into…
把……变成……
13.
cut
down
减少
14.
take
the
bus
or
subway
instead
of
driving
乘坐公交或地铁而不是开车
ride
a
bike
骑自行车
advantages
of
bike
riding
骑自行车的好处
17.
be
good
for
our
health
对我们的健康有好处
18.
takeaway
food
外卖食物
19.
throw
rubbish
in
the
bins
把垃圾扔进垃圾箱
20.
keep
public
places
clean
and
beautiful
保持公共场所干净漂亮
21.
make
a
difference
(to)
(对……)产生影响或作用
lead
to…
导致，通向
Review
the
new
words
and
expressions
you’ve
learned
today.
