(共24张PPT)
Unit
2
Saving
the
Earth
Topic
1
Pollution
has
caused
too
many
problems.
Section
C
There
are
all
sorts
of
pulltion
on
the
earth.
Do
you
know
how
pollution
(hurt)
the
earth？
Now
let
me
tell
you.
The
chemical
factories
/pr??dju?s/
terrible
gas.
It's
called
air
pollution.
It
makes
people
(illness).
It
causes
breathing
problems
and
even
cancer.
Farmers
use
fertilizer（肥料）too
much,
so
soil
pollution
is
/
'difik?lt
/
to
be
stoppped.
Light
pollution
is
(harm)
to
our
eyes.
Every
year
people
/p??(r)/
a
lot
of
waste
into
rivers,
lakes
and
so
on.
So
water
pollution
is
(wide)
spread.
In
some
cities,
there
are
too
cars.
And
the
noise
pollution
disturbs
people
and
makes
people
feel
uncomfortable.
more,
different
kinds
of
white
pollution
influence（影响）the
look
of
our
cities.
We
should
try
best
to
do
something
useful
to
stop
those
pollution.
课前检测
There
are
all
sorts
of
environmental
problems,
including
pollution.
Pollutions
are
harmful
to
people's
healthy.
Today
we'll
talk
about
noise
pollution.
Lead-in
Let’s
write
down
the
things
that
can
make
noises.
noises
made
by
piano
bus
cat
wind
Pre-reading
While-reading
Fast
Reading
Task
1
Underline
the
topic
sentence
of
the
passage
in
1a.
Noise
is
also
a
kind
of
pollution
and
is
harmful
to
human’s
health.
Give
a
proper
title
to
this
passage.
Noise
Pollution
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
2
Careful
Reading
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
unpleasant
sick
deaf
(
Paragraph
2
)
(
Paragraph
3
)
(
Paragraph
3
)
Task
1
People
workers
who
newspapers
and
books
living
near
.
listen
to
loud
music
go
deaf
print
airport
pop
They
lose
their
hearing.
They
have
hearing
loss.
提示：
lose
lost
lost
(v.
丢失，迷路)
pt.
pp.
Task
2
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.
Many
teenagers
in
America
can
hear
no
better
than
65-year-old
people
do.
Because
they
always
listen
to
loud
pop
music.
1.
The
loud
noise
not
only
others
but
also
to
people's
hearing.
2.
Noise
pollutions
produced
by
and
make
people
feel
uncomfortable
and
unpleasant,
even
make
them
sick
or
deaf.
3.
Many
countries
are
trying
to
solve
these
problems.
disturbs
does
great
harm
cars
machines
Which
phrase
has
the
same
meaning
as
“is
harmful
to”?
Task
3
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
Task
4
Language
Points
Post-reading
2.
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
go
deaf
变聋
e.g.
He
_____
_____
because
of
the
traffic
accident.
went
deaf
Language
Points
3.
…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
lose
one’s
hearing
丧失听力
a
printer
4.
…can
hear
no
better
than
65-year-old
people
do…
……听力和60岁的老人一样差……
no
better
than：和……一样不好
not
better
than：不比……好
You
are
poor
at
English.
I'm
no
better
than
you.
你英语差，我和你一样糟。
You
are
not
better
than
Jack.
你不比杰克好。
5.
quite
a
few：许多，大量
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?
…
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.
summary
We
learn:
1.
Find
out
the
topic
sentence
to
understand
the
content
of
a
paragraph.
2.
Write
a
passage
according
to
the
topic
sentences.
We
can:
1.
Some
words:
deaf,
print,
hearing,
loss,
recently,
disturb,sort,
uncomfortable,
unpleasant,
sentence,
meaning
2.
Some
phrases:
go
deaf,
lose
one’s
hearing,
hearing
loss,
no
better
than,
do
harm
to
3.
Some
sentences:
However,
not
all
people
know
noise
is
also
a
kind
of
pollution
is
harmful
to
human’s
health.
Exercises
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.
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.
disturb
harm
sorts
environmental
lost
his
hearing
Not
all
Homework
1.
Read
1a.
2.
Write
a
report
according
to
Part
4.
3.
Finish
Section
C
in
your
workbook.
4.
List
Grammar
and
Functions
in
this
topic.
5.
Preview
Section
D.
Section
C
复习重点
1.
all
sorts
of
=
all
kinds
of
2.
They
lose
their
hearing.
They
have
hearing
loss.
loss：n.
丢失
lose
one's
hearing
丧失听力
3.
not
all…此结构表示部分否定，意为“不是所有的……”。
not与both,
all,
every以及every的派生词连用时表示部分否定。
Not
everybody
likes
playing
basketball.
4.
no
better
than：和……一样不好
not
better
than：不比……好
You
are
poor
at
English.
I'm
no
better
than
you.
你英语差，我和你一样糟。
You
are
not
better
than
Jack.
你不比杰克好。
5.
quite
a
few：许多，大量
