Unit 2 Saving the earth.Topic 1 Pollution has causes too many problemsSection C课件(共28张PPT)

(共28张PPT)
Unit
2
Saving
the
Earth
Topic
1
Pollution
has
caused
too
many
problems.
Section
C
Language
goals
By
the
end
of
the
class,
you
will
be
able
to
Master
the
following
words
,phrases
and
sentences:
Words：
deaf,
print,
hearing,
loss,
recently,
disturb
,
sort,
uncomfortable,
unpleasant,
sentence,
meaning
Phrases:
go
deaf,
lose
one’s
hearing,
hearing
loss,
no
better
than,
do
harm
to
Sentences：However,
not
all
people
know
noise
is
also
a
kind
of
pollution
is
harmful
to
human’s
health.
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
air
pollution
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
light
pollution
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
litter
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
water
pollution
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
soil
pollution
Lead
in
Watch
and
Guess
What
kind
of
pollution
is
it?
noise
pollution
What
problems
do
they
cause?
Water
pollution
can
make
people
sick.
Soil
pollution
causes
unhealthy
food.
Light
pollution
hurts
our
eyes.
Air
pollution
causes
breathing
problems.
Lead
in
Lead
in
Let’s
listen
to
some
music.
Then
talk
about
your
feelings.
What
do
you
think
of
the
music?
If
I
play
rock
music
very
loud
at
mid-night
,
will
you
enjoy
it?
noise
pollution
Noise
is
a
sort/kind
of
pollution.
There
are
all
sorts/kinds
of
noises.
They
make
us
uncomfortable
and
unpleasant.
n.
种类；
v.
把……分类
adj.
使不舒服的
adj.
令人不快的
noises
made
by
Let’s
write
down
the
things
that
can
make
noises.
piano
bus
cat
wind
Underline
the
topic
sentence
of
the
passage
in
1a.
Give
a
proper
title
to
this
passage.
Read
1a
and
complete
the
following
tasks.
Noise
is
also
a
kind
of
pollution
and
is
harmful
to
human’s
health.
Noise
Pollution
Task
1
How
does
noise
harm
people’s
health?
a.
People
often
____
______.
b.
People
often
feel
____________
and
__________.
c.
People
may
become
_____
or
_____.
d.
Your
point:
_____________________________.
go
deaf
uncomfortable
sick
unpleasant
deaf
Task
2
3.
Which
phrase
has
the
same
meaning
as
“is
harmful
to”?
4.
Which
sentence
shows
that
many
teenagers’
hearing
in
America
is
not
good?
5.
Why
is
the
hearing
of
many
young
Americans
not
good?
Answer
the
questions.
“do
harm
to”.
Many
teenagers
in
America
can
hear
no
better
than
65-year-old
people
do.
Because
they
always
listen
to
loud
pop
music.
Task
3
1.
produce
A.
to
hurt
someone
2.
deaf
B.
a
type
or
a
kind
3.
print
C.
not
be
able
to
hear
4.
harm
D.
to
grow
or
make
something
5.
sort
E.
to
put
words
or
pictures
onto
paper
using
a
machine
1b
Read
1a
and
match
the
words
with
their
meanings.
Task
4
People
who
work
and
live
in
noisy
conditions
often
go
deaf.
在嘈杂的环境中工作和生活的人容易变聋。
定语从句
e.g.
Beethoven
was
deaf.
go
deaf
变聋
e.g.
He
_____
_____
because
of
the
traffic
accident.
went
deaf
deaf
adj.
聋的
Language
Points
…many
of
the
workers
who
print
newspapers
and
books
lose
their
hearing.
很多印刷报纸和书籍的工人丧失听力。
定语从句
e.g.
Look!
The
man
is
printing
something.
lose
one’s
hearing
丧失听力
a
printer
hearing
n.
听力，听觉
print
v.
印刷
2
Complete
the
following
passage
with
the
correct
form
of
each
word.
Noise
is
a
kind
of
_________
(pollute).
Cars
and
machines
produce
too
much
noise.
It
makes
people
feel
___________
(comfortable)
and
__________
(pleasant).
It
also
does
great
______
(harm)
to
people’s
_________
(hear).
Noise
is
very
________
(harm)
to
human’s
_______
(healthy).
pollution
uncomfortable
unpleasant
harm
hearing
harmful
health
Has
noise
pollution
caused
you
any
problems?
If
yes,
share
your
feelings
with
your
classmates.
What
about
other
kinds
of
pollution?
3
Choose
one
kind
of
pollution
and
discuss
it
in
groups.
The
following
questions
may
help
you.
1.
What
is
…
pollution?
2.
What
makes
the
…
pollution?
3.
What
problems
does
it
cause?
4.
In
what
way
is
it
harmful
to
people’s
life?
5.
What
has
been
done
to
solve
these
problems?
…
Work
in
groups
4
Write
a
short
report
about
a
kind
of
pollution
based
on
2
and
3.
The
topic
sentence
of
each
paragraph
is
given
below.
…
pollution
is…
…
pollution
is
harmful
to
people’s
health…
The
government
has
tried
many
ways
to
solve
the
problem…
One
possible
version:
Air
pollution
is
becoming
more
and
more
serious
in
today’s
world.
Some
chemical
factories
produce
terrible
gas
and
make
the
air
bad.
Buses
and
cars
also
produce
waste
gas.
In
our
daily
life,
burning
gas,
oil
and
coal
also
creates
air
pollution.
The
air
pollution
may
cause
a
lot
of
problems.
It
is
harmful
to
people’s
health.
It
can
cause
breathing
problems,
sore
eyes
and
even
cancer.
It
can
also
harm
the
plants,
and
the
farmers
will
get
less
harvest.
Luckily,
the
government
has
tried
many
ways
to
solve
the
problem,
such
as
making
laws
to
prevent
the
factory
from
polluting
the
air.
单项选择
(
)
1.
—The
little
girl
was
born____,
and
she
can’t
hear
anything.
—Oh,
I’m
sorry
to
hear
that.
A.
lazy
B.
blind
C.
deaf
D.
lovely
(
)
2.
—
What
happened?
—
There
is
a
girl_____
on
the
street.
She
couldn’t
find
her
mother.
A.
cry
B.
crying
C.
to
cry
D.
cries
(
)
3.
The
______
boy
tried
to
climb
up
the
tree,
but
he
failed.
A.
5-year-old
B.
5-years-old
C.
5
year
old
D.
5
years
old
C
B
A
Exercises
用所给单词的正确形式填空。
1.
They
are
doing
their
homework
carefully.
You’d
better
not
________(disturb)
them.
2.
It
is
known
that
smoking
does
great
_______(harm)
to
us.
3.
They
had
all
______
(sort)
of
juice
to
drink
at
the
party
last
night.
4.
Our
government
has
solved
some
_____________
(environment)
problems.
disturb
harm
sorts
environmental
Exercises
改为同义句。
1.
The
boy
had
hearing
loss
when
he
was
born.
The
boy
_____
_____
_________
when
he
was
born.
2.
Some
students
go
to
school
on
Saturdays.
____
_____
students
go
to
school
on
Saturdays.
lost
his
hearing
Not
all
Exercises
Homework
1.
Write
a
report
according
to
Part
4.
2.
Preview
Unit
2
Topic
1-Section
D.
Bye-bye!