(共27张PPT)
Unit
8
We’re
trying
to
save
the
earth
Let’s
see
who
does
the
best
fisherman
n.渔民
coal
n.
煤
litter
v.乱扔，n.
垃圾
bin
n.
垃圾箱
takeaway
n.
外卖食物
wooden
adj.
木制的
plastic
adj.
塑料的
n.
塑料
bottom
n.
底部
Enjoy
an
MV
water
pollution
pollution
land
pollution
noise
pollution
air
pollution
How
many
kinds
of
pollution
do
these
pictures
show?
Let’s
learn!
The
river
used
to
be
clean.
Now
it
is
dirty.
What
caused
the
problem?
People
are
throwing
litter
into
the
river.
throw
……
in
to
Let’s
learn!
What
caused
the
problem?
Factories
are
putting
waste
into
the
river.
废物
put
waste
into
factories
Let’s
learn!
The
sky
used
to
be
blue.
Now
it
is
polluted.
What
caused
the
problem?
Factories
pollute
the
air
with
a
lot
of
black
smoke.
pollute
…with…
用...污染...
Let’s
learn!
What
caused
the
problem?
There
are
more
cars
on
the
road.
more
cars
Let’s
learn!
The
street
used
to
be
quiet.
Now
it
is
noisy.
What
caused
the
problem?
There
are
more
and
more
cars
on
the
road.
We’re
harming
(伤害）
the
earth
in
many
ways.
But
we
only
have
one
earth.So
what
should
we
do
to
help
save
the
earth.
close
down
We
should
close
down
the
factories.
What
shoud
we
do?
We
should
plant
more
trees.
What
shoud
we
do?
We
should
help
clean
up
the
river.
take
the
bus
What
shoud
we
do?
We
should
take
the
bus
or
walk
to
school.
walk
to
school
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
throwing
litter
in
the
river.
Tony:
Everyone
in
this
town
should
play
a
part
in
cleaning
it
up!
Let’s
talk!
Make
your
own
conversations
about
the
kinds
of
pollution.Then
talk
in
pairs.
2d
Listen
2d
,
and
then
answer
the
questions.
1.What
are
the
advantages
of
bike
riding?
2.
When
did
Susan
start
bringing
a
bag
to
go
shopping?
Riding
a
bike
can
cut
down
air
pollution
,it’s
good
for
health
and
it
doesn’t
cost
anything.
One
year
ago.
Task
1
Read
2d
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.
2d
Task
2
Interviewer:Excuse
me,What
are
your
ideas
for
solving
pollution
problems?
StudentA:
To
cut
down
…
pollution,we
should……
Interviewer
:
Good
ideas!
How
about
…..
?
Student
B:
I
think
we
should……
.It’s
good
for……
Interviewer:
And
you?
Student
C
:…….
Interviewer
:So
together,
our
actions
can
make
a
difference
and
lead
to
a
better
future./make
the
earth
much
better.
Work
in
groups
Suppose(假设)
that
one
of
the
students
in
your
group
is
the
interviewer
,and
the
other
three
are
the
interviewees
(被采访者）,role
play
the
conversation
using
the
phrases
we
learned
.
Task
3
1a
loud
music
cars
rubbish
planes
littering
ships
factories
smoking
building
houses
mobile
phones
Here
are
some
words
related
to
different
kinds
of
pollution.
Write
them
in
the
box
below.
Then
add
more
words.
noise
pollution
______________
______________
______________
______________
air
pollution
______________
______________
_____________
______________
water
pollution
______________
______________
______________
______________
loud
music
cars
,
planes
building
houses
smoking
factories
cars
building
houses
factories
rubbish
littering
ships;
1b
Listen
and
complete
the
sentences.
What
was
the
problem?
The
river
was
_____________.
Even
the
bottom
of
the
river
was
full
of
_________.
There
were
no
more
______
for
fishermen
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
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
The
air
is
badly
polluted
because
there
are
__________
on
the
road
these
days.
Factories
that
burn
coal
also
_______
the
air
with
a
lot
of
black
smoke.
There
is
also
too
much
rubbish
and
waste.
People
________________
things
every
day.
People
are
also
littering
in
____________
like
parks.
This
is
turning
beautiful
places
into
ugly
ones.
more
cars
pollute
are
throwing
away
public
places
Listen
again
and
complete
the
sentences.
2a
2b
用动词的适当形式填空。
1.
We’re
trying
_______
(save)
the
earth.
2.
There
used
to
_____
(be)
clean
and
beautiful.
3.
There
are
too
many
____
for
__________
to
catch
(fish).
4.
It’s
bad
for
environment
to
use
_________
(wood)
chopsticks.
to
save
be
fish
wooden
fishermen
Exercises
根据汉语意思完成句子。
1.
The
street
_____
______
_____
(充满了)
rubbish.
2．we
should
take
the
bus
or
subway
______
______
driving.我们应乘公交车或地铁而不是开车。
3．I
think
simple
things
like
______________
to
go
shopping
can
help.
我认为像带着袋子去购物这样的小事情可能有所帮助。
4．Electricity________
an
important
________
in
our
daily
life.电在我们日常生活中起着重要作用。
is
full
of
instead
of
bringing
a
bag
plays
part
我的收获
Words：
Sentences:
litter,
bottom,
fisherman,
coal,
public,
ugly,
advantage,
cost,
wooden,
plastic,
the
bottom
of,
make
a
difference
1.
The
river
used
to
be
so
clean.
2.
People
are
throwing
litter
into
the
river.
3.
Everyone
should
play
a
part
in
cleaning
it
up.
4
We
should
take
a
bus
or
subway
instead
of
driving.
5.
So
together,
our
actions
can
make
a
difference
and
lead
to
a
better
future.
Summary
How
to
protect
the
environment.
We
only
have
one
earth!
Protect
environment,protect
ourselves.
Let's
join
our
hands
together
to
make
the
world
more
and
more
beautiful.?
Write
a
proposal
(倡议书)
to
your
classmates,
let’s
protect
the
environment
together,you
may
begin
like
this:
Dear
students:
Good
environment
can
make
people
feel
happy
and
fit
.To
improve
the
environment
is
to
improve
our
life.
……
