Unit 2 Saving the earth.Topic 1 Pollution has causes too many problemsSection A课件(共23张PPT)

(共23张PPT)
Unit
2
Saving
the
Earth
Topic
1
Pollution
has
caused
too
many
problems.
Section
A
Language
goals
By
the
end
of
the
class,
you
will
be
able
to
Master
the
following
words
,phrases
and
sentences:
Words：
bee,
butterfly,
mess,
shame,
several,
pour,
waste,
destroy,
pollute,
goodness
Phrases:
see
sb.
doing
sth.
pour…into..
Sentences：
There
are…doing…
A:
Where
have
you
been/traveled?
B:
I
have
been/traveled
to
...
Lead
in
Lead
in
Choose
the
best
place
for
a
picnic
and
tell
us
why
you
choose
that
place.
I
think
…
is
the
best
choice.
The
air
there
is
fresh.
We
can
fly
kites
on
the
grass.
Have
you
ever
had
a
picnic?
Kangkang,
Jane,
Maria
and
Michael
are
planning
a
picnic
for
Sunday.
They
will
go
to
the
West
Hill.
What
can
you
see
there?
We
can
see
bees
and
butterflies
dancing.
bee
butterfly
Is
the
West
Hill
beautiful?
The
flowers
and
grass
have
gone!
Oh,
my
goodness.
What
a
mess!
Look!
There
are
several
chemical
factories
pouring
waste
water
into
the
stream.
=
have
disappeared.
Is
it
beautiful
now?
What
has
happened
there?
waste
water
waste
paper
Waste
water.
浪费水。
Don’t
waste
paper.
不要浪费纸。
waste
adj.
v.
There
are
several
chemical
factories
pouring
waste
water
into
the
stream.
有几家化工厂正在往小溪里排放废水。
There
be…doing
sth…
……有……在做某事
e.g.
There
are
some
people
waiting
for
the
bus
at
the
bus
stop.
倒出；倾泻
pour…
into…
把……倒入……
e.g.
Pour
red
wine
into
the
glass.
1b
Listen
to
1a
and
mark
the
words
with
P
(Past)
or
N
(Now).
____
beautiful
____
butterflies
____
dirty
____
grass
____
terrible
____
factory
____
bees
____
fresh
____
clean
____waste
water
P
P
N
P
N
N
P
P
P
N
1c
Read
1a
and
complete
the
sentences
in
the
table.
Then
retell
1a
to
your
partner.
Two
years
ago
Now
1.
It
was
a
_______________.
2.
There
were
_______________________.
3.
The
air
was
_______________________
and
you
could
see
_______________________.
1.
___________________
have
gone.
2.
The
water
is
________and
smells
___________.
3.
There
are
several
________________
pouring
_______________
into
the
stream.
4.
_____________has
changed.
beautiful
place
lots
of
flowers
and
grass
fresh
and
the
water
was
clean
bees
and
butterflies
dancing
The
flowers
and
grass
so
dirty
terrible
chemical
factories
waste
water
Everything
2
Work
in
pairs.
Look
at
the
pictures
and
make
up
conversations
similar
to
the
example
with
your
partner.
Example:
A:
There
were
lots
of
flowers
and
grass
when
I
visited
the
village
last
year.
B:
But
now
the
flowers
and
grass
have
gone.
A:
What
has
happened
here?
B:
The
villagers
have
destroyed
them.
village/flowers
and
grass
villagers/destroy
Example:
A:
There
were
lots
of
trees
when
I
climbed
the
hill
last
year.
B:
But
now
the
trees
have
gone.
A:
What
has
happened
here?
B:
The
farmers
have
cut
them
down.
hill/
trees
farmers/cut
down
Example:
A:
There
were
lots
of
fish.
when
I
visited
the
lake
last
year.
B:
But
now
the
fish
have
gone.
A:
What
has
happened
here?
B:
The
factory
have
polluted
them.
lake/fish
factory/
pollute
4
Work
in
groups
and
talk
about
pollution
in
a
place
you
are
familiar
with.
The
following
sentences
may
help
you.
…ago,
it
was…
Now,
…
have/
has
gone.
What
has
happened?
Everything
has
changed.
Oh,
my
goodness!
3
A.
Listen
to
the
sentences
and
number
the
pictures.
5
3
2
1
4
6
1.
People
_____
_____
_____
too
many
trees,
so
I
don’t
have
enough
leaves
to
eat.
2.
I
live
in
trees
but
now
many
trees
_____
_____.
3.
I
like
leaves
and
grass,
but
now
they
_____
____________.
4.
I
_____
_____
hungry
for
months
because
of
less
bamboo.
5.
Human
polluted
the
sea,
so
I
_____
_____
_____.
6.
The
water
_____
_____
many
years
ago.
But
it
_____
_____
_____
for
me
to
live
in
now.
B.
Listen
again
and
complete
the
sentences.
have
cut
down
have
gone
have
disappeared
have
been
don’t
live
happily
was
clean
is
too
dirty
一、单项选择
(
)
1.
Look!
There
are
some
boys
________
on
the
playground.
A.
play
football
B.
are
playing
football
C.
playing
football
D.
plays
football
(
)
2.
—
I’m
sorry
I
can’t
go
shopping
with
you.
I
am
ill.
—
________
A.
What
a
mess!
B.
What
a
shame!
C.
What
a
pity!
D.
B
and
C
C
D
Exercises
(
)
3.
—
Don’t
________
water.
We
must
save
every
drop
of
it.
—
Sorry,
I
won’t
do
it
again.
A.
waste
B.
throw
C.
play
D.
leave
A
Exercises
二、用所给动词的适当形式填空。
1.
When
I
entered
the
room,
I
saw
Maria
________
(read)
a
Chinese
book.
2.
What
a
shame!
The
flowers
and
trees
in
the
park
_________
(go).
3.
Everything
_____________
(change)
in
the
past
few
years.
4.
Pandas
don’t
have
enough
bamboos
________
(eat)
now
because
of
the
pollution.
5.
—
Where
have
they
been?
—
They
__________
(be)
to
the
Great
Wall.
They
_______
(have)
a
good
time
there
the
day
before
yesterday.
reading
have
gone
has
changed
to
eat
have
been
had
Exercises
Homework
1.
Write
a
passage
according
to
Part
4.
2.
Preview
Unit
2
Topic
1-Section
B.
Bye-bye!