Unit13 We are trying to save the sharks Section A (2a-2d) 课件(共32张PPT)+音频+教案

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名称 Unit13 We are trying to save the sharks Section A (2a-2d) 课件(共32张PPT)+音频+教案
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更新时间 2021-01-11 21:17:57

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Section
A
21a-2d)
I.
Presentation
Show
the
picture
of
the
earth
and
tell
students
the
earth
is
polluted
now.
For
example:
(1)
The
factories
that
burn
coal
pollute
the
air
with
a
lot
of
black
smoke.
(2)
Factories
put
waste
into
the
river.
(3)
People
should
throw
away
litter
in
the
bin.
(4)There
are
more
cars
on
the
road.
II.
Learning
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
noise
pollution
air
pollution
water
pollution
____________
___________
_____________
____________
___________
_____________
____________
___________
_____________
____________
___________
_____________
Keys?:
noise
pollution
loud
music
planes
mobile
phones
building
houses
air
pollution
factories
smoking
cars
building
houses
water
pollution
ships
rubbish
littering
factories
III.
Listening
1.
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.
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.
Keys:
really
dirty
rubbish
fish
litter
waste
government
close
down
clean
up
2.
Listen
again
and
check
(√)
the
sentences
you
hear.
1)
We
could
go
fishing
in
the
river.
2)
The
river
was
really
dirty.
3)
The
river
has
always
been
the
nicest
river
in
this
town.
4)
We
should
ask
the
teachers
for
help.
Keys:
2
3
IV.
Practice
1.
Role-play
the
conversation
in
1c.
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
into
the
river.
Tony:
Everyone
in
this
town
should
play
a
part
in
cleaning
it
up!
2.
Make
conversations
using
the
pollution
in
1a.
A:
The
river
has
always
been
the
nicest
river
in
this
town.
B:
Yes,
it
used
to
be
so
clean.
A:
But
I
was
there
last
weekend
and
the
river
was
really
dirty.
B:
What
caused
the
problem?
A:
People
are
throwing
litter
into
the
river.
B:
What
should
we
do?
A:
Factories
are
also
putting
waste
into
the
river.
B:
Yes,
everyone
in
this
town
should
play
a
part.
A:
We
should
write
to
the
government
and
ask
them
to
close
down
the
factories.
B:
What
else
can
we
do?
A:
Everyone
should
help
to
clean
up
the
river.
V.
Language
points
1.
We’re
trying
to
save
the
earth!
我们正在竭尽全力拯救地球!
try
to
do
=try
one’s
best
to
do
努力去做某事。
e.g.
Every
student
should
try
to
study
hard
in
order
to
study
in
a
university.
为了进入大学学习,每个学生都应该努力学习。
2.
Here
are
some
words
related
to
different
kinds
of
pollution.
be
related
to
与…有关
e.g.?I
am
not?related?to?him
in
any
way.
我和他无任何关系。
3.
Everyone
in
this
town
should
play
a
part
in
cleaning
it
up!
play
a
part
in
在……方面起作用
e.g.
A
good
diet
plays
a
large
part
in
helping
people
live
longer.
健康的饮食在帮助人们长寿方面起着非常大的作用。
play
a
part
在……中扮演角色
e.g.
He
was
invited
to
play
a
part
in
this
TV
play.
他被邀请参加这个电视剧的演出。
4.
Even
the
bottom
of
the
river
was
full
of
rubbish.
Yes,
but
people
are
throwing
litter
into
the
river.
litter

rubbish
都可指“垃圾”,用作不可数名词。
rubbish
指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。
litter
指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收
e.g.
Throw
the
rubbish
out.
把垃圾扔出去。
  
The
room
is
full
of
rubbish.
房间里堆满了垃圾。
  
Pick
up
your
litter
after
a
picnic.
野餐后将废弃物收拾好。
VI.
Listening
1.
2a
Listen
to
the
interview.
Circle
the
kinds
of
pollution
that
Jason
and
Susan
talk
about.
A.
land
pollution
B.
air
pollution
C.
noise
pollution
D.
water
pollution
Keys:
B
A
2.
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.
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
(丑陋)
ones.
Keys:
more
cars
pollute
are
throwing
away
public
places
3.
Listen
and
answer
the
questions.
1)
Who
is
the
interviewer
talking
to?
2)
What
are
they
talking?
3)
What
other
problems
do
they
see?
Keys:
Susan
and
Jason.
The
environmental
problems.
There’s
too
much
rubbish
and
waste
in
the
streets.
VII.
Practice
(2c)
Use
the
information
in
2a
and
2b
to
role-play
conversations
between
Jason
and
Susan.
Jason:
The
air
has
become
really
polluted
around
here.
I’m
getting
very
worried.
Susan:
Yes,
I
used
to
be
able
to
see
stars
in
the
sky.
Jason:
The
problem
is
that…
VIII.
Discussion
Ask
students
what
we
should
do
to
save
the
earth.
Help
students
answer,
turn
off
the
lights
when
you
leave
a
room;
stop
riding
in
cars;
stop
using
paper
towels
or
napkins;
recycle
books
and
paper.
IX.
Reading
1.
Read
2d
and
complete
the
chart.
Problems
Solving
problems
air
pollution
waste
pollution
wooden
(木头的)
chopsticks
or
plastic
forks
rubbish
2.
Role-play
the
conversation.
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
(优点)
of
bike
riding.
It’s
good
for
health
and
it
doesn’t
cost
(花费)
anything!
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
(塑料)
forks
when
I
buy
takeaway
(外卖食品)
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!
X.
Summary
and
language
points
1.
This
is
turning
beautiful
places
into
ugly
ones.
turn…
into…
把……变成……
e.g.
The
icy
rain
seemed
like
to
turn
into
snow.
渐渐地冻雨又变成雪花的模样。
2.
It’s
good
for
health
and
it
doesn’t
cost
anything!
cost
v.
花费;使付出
指花费金钱,主语通常是物。cost的过去式和过去分词均为cost。
e.g.
The
new
shirt
cost
Mr
Wang
200
yuan.
王先生花了200元买了新衬衫。
How
much
does
the
new
computer
cost?
新电脑花了多少钱?
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.
4)
You
should
__________?some
time
practising
your
pronunciation.
5)
My
brother
_______?6,
000
yuan
for
the
new
computer
yesterday.
Keys
cost??
spent?
takes
spend
paid
3.
So
together,
our
actions
can
make
a
difference
and
lead
to
a
better
future!
make
a
difference
(to…)
表示(对……)产生影响或作用
e.g.
Do
you
think
his
words
would
make
any
difference
to
the
final
decision?
你认为他的话会对最后的决定产生影响吗?
The
new
teacher
always
encourages
little
Tom.
This
has
made
a
big
difference
to
him.
新来的老师总是鼓励小汤姆,这对他影响很大。
XI.
Exercises
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.
Keys:
to
save
be
fish
fishermen
wooden
XII.
Think
about
The
earth
is
badly
polluted.
Please
make
a
poster
and
think
of
what
we
can
do.
XIII.
Homework
1.
Copy
the
new
words
and
remember
them.
2.
Read
the
listening
materials
of
1b,
2a.(共32张PPT)
Unit
13
We
are
trying
to
save
the
earth!
Section
A
2a-2d
What
about
sunrise
What
about
rain
What
about
all
the
things
That
you
said
we
were
to
gain
What
about
killing
fields
Is
there
a
time
What
about
all
the
things
That
you
said
was
yours
and
mine
Did
you
ever
stop
to
notice
All
the
blood
we've
shed
before
Did
you
ever
stop
to
notice
This
crying
Earth
the
weeping
shores
Aaaaaaaaaah
Aaaaaaaaaah
Earth
Song
What
have
we
done
to
the
world
Look
what
we've
done
What
about
all
the
peace
That
you
pledge
your
only
son
What
about
flowering
fields
Is
there
a
time
What
about
all
the
dreams
That
you
said
was
yours
and
mine
Did
you
ever
stop
to
notice
All
the
children
dead
from
war
Did
you
ever
stop
to
notice
This
crying
Earth
the
weeping
shores
Aaaaaaaaaah
Aaaaaaaaaah
pollution
Causes:
a
huge
number
of
cars,
factories,
coal-burning

Look
and
say
What
kind
of
pollution
has
been
showed
in
this
picture?
What
do
you
think
has
caused
this
pollution?
air
pollution
Causes:
loud
music,
airplanes,
cars
,
mobile
phones

noise
pollution
water
pollution
Causes:
factories,
rubbish

Look
and
say
Causes:
littering,
all
kinds
of
human
activities

land
pollution
2a
Listen
to
the
interview.
Circle
the
kinds
of
pollution
that
Jason
and
Susan
talk
about.
A.
land
pollution
B.
air
pollution
C.
noise
pollution
D.
water
pollution
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.
3.
There
is
also
too
much
rubbish
and
waste.
People
___________________things
away
every
day.
4.
People
are
also
littering
in______________
like
parks.
This
turns
beautiful
parks
into
ugly
places.
more
cars
pollute
are
throwing
away
public
places
2b
Listen
and
complete
the
sentences.
Help
save
the
earth
We
must
think
of
better
ways
to
treat
the
earth.
What
do
you
usually
do?
Are
you
a
friend
of
the
Earth?
START
Take
a
quiz
You
finish
drinking
a
can
of
cola.
What
do
you
do?
A:
I
throw
away
the
can.
B:
I
recycle
the
can.
There
are
a
lot
of
old
newspapers
at
your
home.
What
do
you
do?
A:
I
throw
the
old
newspapers
away.
B:
I
recycle
the
old
newspapers.
You
go
shopping.
What
do
you
do?
B:
I
use
my
own
bag.
A:
I
use
a
lot
of
new
plastic
bags.
When
you
write
on
a
piece
of
paper,
what
do
you
do?
A:
I
write
on
one
side
only.
B:
I
write
on
both
sides.
Are
you
a
friend
of
the
Earth?
Can
we
do
something
to
save
the
earth?
2d
Read
and
complete
the
chart.
Problems
How
to
solve
problems
air
pollution
waste
pollution
wooden
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
Discussion:
What
can
we
do
to
save
the
earth
in
our
lives?
Turn
off
the
lights
when
you
leave
a
room.
take
the
bus
or
ride
a
bike
instead
of
driving
stop
using
paper
towels
or
napkins
(餐巾/餐巾纸)
throw
the
rubbish
in
the
bins
in
our
school
Don’t
smoke
in
public.
save
water
/
turn
off
the
tap
Don’t
waste
food.
take
the
bus
or
subway
ride
a
bike
bring
a
bag
to
go
shopping
throw
rubbish
in
the
cans
turn
off
the
lights
when
you
leave
a
room
recycle
books
and
paper
turn
off
the
shower
when
washing
hair
don’t
take
wooden
chopsticks
or
forks
rethink,
reuse,
recycle
...
...
Summary
What
can
we
do
to
save
the
earth?
1.
Review
the
new
words
and
expressions.
2.
Write
about
what
you
can
do
to
help
save
the
earth
in
your
life.
Homework