(共21张PPT)
Unit
2
Saving
the
Earth
Topic
2
All
these
problems
are
very
serious.
Section
C
Lead-in:
Dance
to
disco
Warm-Up
Disco.mp4
Pre-reading
Task
1:
Match
the
following
words
or
phrases
with
their
meanings.
take
away
A.
to
get
away
hole
B.
a
special
kind
of
oxygen,
called
O3
ozone
C.
to
cause
the
level
of
the
oceans
to
rise
blanket
D.
a
kind
of
gas,
called
CO2
5.
escape
E.
to
cover
someone’s
body
to
get
warm
rise
F.
an
opening
into
or
through
something
7.
Carbon
dioxide
G.
to
move
something
8.
the
greenhouse
effect
H.
to
go
up
or
increase
While-reading
Know
a
little
(Fast
Reading
速读)
Task
1
Read
1a
quickly
and
choose
the
correct
answer
to
each
question.
1.
What
is
the
best
title
for
this
passage?
A.
Environmental
Problems
B.
Pollution
on
the
Earth
C.
Hope
for
the
Future
D.
The
Greenhouse
Effect
2.
If
we
divide
(划分)
this
passage
into
three
parts,
the
second
part
should
be
from
_______.
Para.2
to
Para.5
B.
Para.2
to
Para.6
C.
Para.
2
to
Para.4
C.
Para.2
to
Para.3
Tips:
中考阅读理解热点题型,
必须领会解题技巧。
Task
2
:
Listen
to
Paragraphs
2-6,
choose
the
suitable
titles
for
them.
Para.2
:
_____
Para.3
:
_____
Para.4
:
_____
Para.5
:
_____
Para.6:
_____
Traffic
pollution
B.
Factory
pollution
C.
Fewer
trees
D.
The
ozone
hole
E.
More
carbon
dioxide
C
A
B
D
E
Task
3
Read
1a
again
and
choose
the
correct
answer
to
each
question.
1.
What
does
our
planet
mean
here?
A.
The
sun.
B.
Mars.
C.
The
moon.
D.
The
earth.
2.
In
the
passage,
blanket
refers
to
____.
A.
carbon
dioxide
around
the
earth
B.
the
ozone
layer
in
the
sky
C.
the
forests
around
the
world
D.
pollution
all
over
the
world
3.The
word
it
in
Paragraph5
refers
to
____.
A.
CO2
B.
O3
C.
O2
D.
H2O
Know
more
(Careful
Reading
精读)
Find
out
the
details
more
carefully
Task
4
Read
1a
more
carefully
and
complete
the
notes.
Problem
Effect
on
the
environment
fewer
trees
forests
become
deserts,
animals
and
plants
disappear
traffic
pollution
greenhouse
effect,
level
of
oceans
rising,
climate
change
cars
and
buses
pollute
air,
health
problems
pollute
land
and
water,
rivers
and
lakes
dead
harmful
radiation
reaches
the
earth,
cause
cancer
factory
pollution
ozone
hole
more
CO2
Task5:
Read
Para.3
carefully
and
answer
the
following
question.
If
you
can
make
much
money
when
you
grow
up,
will
you
buy
a
car?
Why
or
why
not?
Tips:
中考任务型阅读68题,
开放式问答，言之
成理即可。
Post-reading
Group
work:
Draw
one
card
and
write
a
short
paragraph
about
the
environmental
problem
in
groups.
Problem
Effect
on
the
environment
fewer
trees
forests
become
deserts,
animals
and
plants
disappear
traffic
pollution
greenhouse
effect,
level
of
oceans
rising,
climate
change
cars
and
buses
pollute
air,
health
problems
pollute
land
and
water,
rivers
and
lakes
dead
harmful
radiation
reaches
the
earth,
cause
cancer
factory
pollution
ozone
hole
more
CO2
As
we
all
know,
water
pollution
is
becoming
more
and
more
serious.
Some
factories
pour
waste
water
into
the
rivers.
As
a
result,
it
makes
the
water
dirty
and
smell
terrible.
Most
of
fish
in
the
water
have
died
and
we
can’t
swim
in
the
water.
Water
is
very
important
to
human
beings,
so
we
should
do
our
best
to
protect
and
save
it.
Luckily,
our
government
is
taking
measures
to
protect
the
water
from
pollution.
You
can
write
it
like
this:
Our
earth
is
in
danger
now.
地球过去和现在的对比.mp4
Brainstorming:
How
to
save
the
earth
Words:
Phrases:
take
away,
ozone
layer,
carbon
dioxide,
refer
to,
the
greenhouse
effect
oxygen,
hole,
radiation,
form,
blanket,
escape,
rise
Reading
skills
(阅读技巧)
Skimming
(略读、跳读):
aim
to
find
the
main
idea
of
this
passage.
Scanning(扫读):
aim
to
find
the
detailed
information.
Fast
Reading
(速读)
Careful
Reading
(精读)
Read
a
new
passage
in
the
paper
with
using
the
reading
skills
and
choose
the
correct
answers.
Which
group
is
the
best?
