(共18张PPT)
Unit
2
Saving
the
Earth
Topic
1
Pollution
has
caused
too
many
problems.
Section
A
bee
/
bi:/
n.
蜜蜂
butterfly
/
?b?t?fla?/
n.
蝴蝶
Pre-listening
What
a
mess!
There
are
several
factories
pouring
waste
water
into
the
stream.
/
mes
/
n.
肮脏，杂乱
/
weist
/
adj.
废弃的，丢弃的
v.浪费
/
p??(r)
/
v.
倒出，倾泻
/
'sevr?l
/
det
&
pron.
几个，数个
What
a
shame!
/?e?m/
n.
羞耻，羞愧
pour…into…
把……倒入……
e.g.
Please
pour
the
sugar
into
a
cup.
Kangkang,
Jane,
Maria
and
Michael
are
planning
a
picnic
for
Sunday.
They
will
go
to
the
West
Hill.
What
about
the
environment
of
the
west
year?
Let's
listen.
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
While-listening
Two
years
ago
Listen
to
the
top
half
of
1a,
and
fill
in
the
blanks.
Two
years
ago,
it
was
a
place.
There
were
a
lot
of
,
and
.
The
air
was
and
the
water
was
.
You
could
see
many
fish
in
the
river
and
a
few
bees
and
butterflies
.
总结固定用法：看见某人正在做某事
see
sb.
doing
beautiful
flowers
grass
trees
fresh
clean
swimming
dancing
What
about
now?
Listen
to
the
bottom
half
of
1a,
and
fill
in
the
blanks.
Now,
have
gone.
The
water
is
.
and
smells
.
There
are
several
pouring
into
the
stream.
has
changed.
Now
the
flowers
and
grass
dirty
terrible
factories
waste
water
Everything
总结固定用法：有某人或某物正在做什么
There
be
sb.
/
sth.
doing
sth.
Compare
Past
and
Now.
What
can
you
conclude?
Finish
1c.
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
The
pollution
now
is
more
and
more
serious
!
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.
lake/fish
factory/
pollute
hill/
trees
farmers/cut
down
village/flowers
and
grass
villagers/destroy
Post-listening
/?v?l?d??(r)/
n.
村民
/d??str??/
v.
摧毁，破灭
/p?'lu:t/
v.
污染
砍到
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
Now
let's
work
in
groups
and
talk
about
pollution
in
a
place
you
are
familiar
with.
The
following
sentences
may
help
you.
Finish
4.
So
many
places
have
polluted
seriously.
What
about
your
hometown
or
your
familiar
places?
…ago,
it
was…
Now,
…
have/
has
gone.
What
has
happened?
Everything
has
changed.
Oh,
my
goodness!
/?gudn?s/
n.
天哪
summary
We
learn:
1.
Express
exclamation:
What
a
mess!
What
a
shame!
Oh,
my
goodness!
2.
Know
the
differences
between
Simple
Past
and
Present
perfect.
It
was
a
beautiful
place.
Everything
has
changed.
We
can:
1.
Some
words:
bee,
butterfly,
mess,
shame,
several,
pour,
waste,
villager,
destroy,
pollute,
goodness
2.
Some
phrases:
cut
down,
see
sb.
doing
sth.
,
pour…into…
3.
Some
sentences:
There
are…doing…
Exercises
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
(
)
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
(
)
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
(
)
4.
We
can't
swim
in
the
river
any
more.
The
new
fatory
is
waster
water
into
it.
A.
throwing
B.
wounding
C.
cleaning
D.
pouring
C
D
A
D
Homework
1.
Read
1a.
2.
Write
a
passage
according
to
Part
4.
3.
Finish
Section
A
in
your
workbook.
4.
Preview
Section
B.
Section
A
复习重点
1.
pour…into…
把……倒入……
e.g.
Please
pour
the
sugar
into
a
cup.
2.
see
sb.
doing：看见某人正在做某事
3.
There
be
sb.
/
sth.
doing
sth.
：有某人或某物正在做什么
4.
…
have
/
has
gone.
……消失了。(=…have
/
has
disappeared.)
5.
What
has
happened?
发生了什么事？
6.
Everything
has
changed.
一切都已经改变。
