(共39张PPT)
Module
12
Save
our
world
Unit3
Language
in
use
The
river
is
________
(pollute).
The
water
________
(pollute)
happens
when
dirty
things
get
into
the
water
bodies
.
Oil
is
a
big
__________(pollute)
for
polluting
the
water.
polluted
pollution
pollutant
pollute
v.
polluted
adj.
pollution
n.
pollutant
n.
(污染物）
What
are
effects
of
water
pollution?
?
makes
water
unfit
to
drink
?
harmful
to
people’s
health
?
affects
the
ecosystems
unfit=
harmful=
ecosystem=
Word
formation
un
+
fit
harm
+
ful
eco
+
system
Word
formation
compound(合成)
prefix
(前缀)
suffix
(后缀）
Compound
?
?
toothbrush
?
?
doorbell
?
?
rainbow
Spaceship
Website
Sunflower
Notebook
Cupboard
Moonlight
Suitcase
Teahouse
Compound
words
Prefixes
en
?
able
?
enable
inter
?
act
?
interact
re
?
write
?
rewrite
Suffixes
-less
Without
careless/hopeless/helpless/useless/meaningless/homeless…
Adjective
suffixes
Full
of
-ful
colorful/helpful/useful/hopeful/
careful/peaceful/wonderful…
Able
to
be
-able
enjoyable/collectable/comfortable/
loveable/washable/eatable/reasonable…
Suffixes
Adjective
suffixes
Suffixes
noun
suffixes
后缀
功能
例词
-ment
构成名词
agreement,
government
-ness
coldness,
happiness,
illness
-th
truth,
warmth
-tion
competition,
education,
information,
invitation
-ty
activity,
safety
How
many
words
can
you
writing
by
adding
prefixes
or
suffixes?
Make
a
new
words.
Join
the
parts
of
words
in
Box
A
with
the
words
in
Box
B.
You
need
to
use
some
of
the
parts
more
than
once.
A
–able
-ful
im-
-less
re-
un-
B
care
collect
hope
possible
use
usual
wanted
waste
collectable,
usable,
careful,
hopeful,
useful,
wasteful,
impossible,
careless,
hopeless,
useless,
reuse,
unusual,
unwanted
Now
work
in
groups.
Play
the
guessing
game
English
for
Fun.
English
for
Fun
full
of
care
____________
2.
can
be
collected
____________
3.
full
of
hope
____________
4.
without
any
hope
____________
5.
not
possible
____________
careful
collectable
hopeful
hopeless
impossible
6.
not
usual
____________
7.
without
any
use
____________
8.
use
again
____________
9.
not
wanted
____________
10.
making
a
lot
of
waste
____________
unusual
useless
reuse
unwanted
wasteful
Complete
the
sentences
with
the
words
in
the
box.
hopeful
impossible
reuse
unhealthy
wasteful
Polluted
water
is
____________.
2.
It
is
_________
to
throw
so
much
food
away.
unhealthy
wasteful
3.
If
you
look
after
things
well,
you
may
________
some
of
them
later.
4.
It
is
___________
to
clean
up
the
whole
river
in
such
a
short
time.
5.
If
we
pay
attention
to
pollution
now,
the
future
will
be
__________.
reuse
impossible
hopeful
Noun
Verb
Adjective
Adverb
useful/useless
hope
hopefully
/
hopelessly
pollution
——
water
——
——
waste
——
——
usually/
unusually
use
usefully/
uselessly
hope
hopeful/hopeless
pollute
polluted/unpolluted
water
waste
wasteful/wasted
wastefully
usual/
unusual
Complete
the
sentences
with
the
correct
form
of
the
words
in
Activity
3.
She
was
hopeful
that
her
new
job
would
make
her
more
successful.
The
factory
___________
the
river,
and
the
fish
died.
2.
We
often
walk
in
the
countryside.
It
is
a(n)
_______
activity
for
us.
polluted
usual
3.
Do
not
use
so
much
water.
It
is
very
__________.
4.
To
keep
the
flowers
growing,
you
need
to
_________
them
once
a
day.
wasteful
water
Complete
the
sentences.
A
lunchbox
is
a
box
that
you
keep
your
lunch
in.
A
___________
is
a
card
that
you
write
on
one
side
of
and
send
to
someone
by
post.
2.
A
___________
is
a
room
where
you
have
classes
at
school.
postcard
classroom
3.
A
___________
is
a
book
that
has
one
or
more
stories
for
children.
4.
A
____________
is
a
black
board
that
is
used
at
school
for
writing
on
with
chalk.
storybook
blackboard
Complete
the
conversation
with
the
correct
form
of
the
expressions
in
the
box.
be
good
for
throw
away
turn
off
worry
about
Mike:
I
hear
you
are
off
to
the
Caribbean
for
a
holiday!
Lucky
you!
But
aren’t
you
_______________
the
pollution
that
such
long
plane
journey
may
cause
for
the
environment?
Ken:
I
know,
but
what
can
I
do
about
it?
I’ve
already
tried
my
best
to
protect
the
environment.
worried
about
I
recycle.
I
don’t
____________
things
if
I
don’t
want
them
any
more.
I
____________
the
lights
when
I
leave
a
room.
Don’t
tell
me
I
shouldn’t
travel
by
plane
any
more!
Mike:
No,
of
course
not.
But
we
can
do
more
to
protect
the
environment.
For
example,
we
can
help
keep
the
air
clean
by
planting
trees.
Trees
______________
the
environment.
In
this
way,
we
can
reduce
the
harm
of
pollution.
throw
away
turn
off
are
good
for
Ken:
Good!
So
I
can
enjoy
my
holiday,
and
when
I
come
back,
I’ll
plant
some
trees!
Mike:
That’s
the
idea!
Maybe
we
can
all
join
in
and
start
a
small
forest!
Listen
and
check
(√)
the
true
sentences.
1.
It
is
OK
to
throw
used
things
away.
Looking
after
them
takes
a
lot
of
time.
2.
Do
not
throw
away
things
made
of
glass,
plastic
and
paper,
but
recycle
them
when
possible.
3.
Take
a
bag
when
you
go
shopping.
√
√
Listening
4.
Producing
electricity
and
using
oil
will
not
cause
pollution.
5.
Turn
off
lights
when
you
do
not
need
them.
6.
Ride
a
bike
or
walk,
and
do
not
often
drive
your
car.
√
√
Listen
again
and
complete
the
table.
Advice
Reasons
Don’t
throw
away
things
made
of
____________________________
but
_______
them.
Throwing
things
away
is
wasteful.
2.
__________
your
plastic
bags
when
you
can
and
__________
with
you
when
you
go
shopping.
Plastic
bags
__________
recycle.
glass,
plastic
and
paper
Reuse
take
a
bag
are
hard
to
recycle
Advice
Reasons
3.
Use
less
electricity
and
oil
to
_______________.
4.
Don’t
leave
lights
on
and
_______________.
5.
____________
and
do
not
often
drive
your
car.
Producing
electricity
and
using
oil
may
cause
___________.
reduce
pollution
waste
electricity
Walk
or
cycle
pollution
Look
at
the
pictures
and
answer
the
questions.
What
kinds
of
things
can
be
recycled?
2.
How
can
these
things
be
reused?
3.
How
does
this
help
the
environment?
4.
Have
you
ever
recycled
or
used
things
that
can
be
recycled?
How?
Work
in
pairs
Earth
hour
Earth
Hour
is
held
toward
the
end
of
March
each
year.
During
earth
hour,
people
all
across
the
world
switch
off
the
lights
they
do
not
need.
They
do
this
to
show
their
awareness
of
climate
change.
The
first
Earth
Hour
was
held
in
2007
in
Sydney,
where
more
than
2.2
million
people
switched
off
their
lights.
Today,
more
and
more
cities
are
taking
part
in
the
event,
such
as
Beijing,
London,
Rome
and
New
York,
and
landmarks
like
the
Empire
State
Building
and
the
Golden
Gate
Bridge
will
go
dark.
When
is
Earth
Hour
held
each
year?
It
is
held
toward
the
end
of
March
each
year.
Why
do
people
switch
off
lights?
Because
they
do
this
to
show
their
awareness
of
climate
change.
When
was
the
first
Earth
Hour
held?
It
was
held
in
2007
How
many
people
did
they
switch
off
lights
in
2007
in
Sydney?
More
than
2.2
million
people
switched
off
their
lights.
…的末端
全世界
他们意识到气候的变化
参加
关闭
the
end
of
all
across
the
world
show
their
awareness
of
climate
change
take
part
in
switch
off
Expressions
