高中英语人教版选修六 Unit 4 Global warming Read and discover 课件 (共47张PPT)

(共47张PPT)
选修六
Unit
4
Global
warming(1)
高二年级
英语
Lesson
1
Key
words
and
expressions
Task
1
Read
and
discover
average
Our
earth
becomes
warmer
and
warmer.
What
is
global
warming?
average:
adj.
calculated
by
adding
several
amounts
together,
finding
a
total,
dividing
the
total
by
the
number
It
is
an
increase
in
the
average
temperature
of
the
earth’s
surface
over
time.
What
is
global
warming?
1.
The
greenhouse
effect
gives
the
earth’s
surface
the
average
temperature
of
15
Celsius
degree.
2.
The
average
global
temperature
has
increased
year
by
year.
What
is
global
warming?
Is
gobal
warming
a
random
natural
phenomenon?
random:
adj.
phenomenon:
n.
lacking
any
certain
plan
or
order
something
that
happens
in
society
or
nature
1.The?survey?used?a?random?sample?of?200?people.
2.
An
earthquake
is
a
natural
phenomenon
and
happens
frequently.
How
has
global
warming
come
about?
Many
scientists
subscribe
to
the
view
that
global
warming
has
come
about
through
the
burning
of
fossil
fuels.
1.
Do
you
subscribe
to
the
idea
that
global
warming
is
due
to
the
human’s
activities?
v.
to
agree
to,
support
or
accept
2.
Scientists
subscribe
to
the
idea
that
water
polluiton
is
caused
by
tons
of
industrial
wastes
poured
into
rivers.
Read
and
discover:
to
receive
or
obtain
sth.
regularly
1.
Many
famous
people
subscribe
to
the
Hope
Project
to
help
out-of-school
children.
v.to
donate
money
or
things
to
sb.
or
sw.
2.
I
have
subscribed
to
many
English
magazines
and
newspapers
in
order
to
broaden
my
mind.
3.
Do
you
know
how
to
subscribe
to
the
Web
service?
to
pay
money
regularly
to
have
newspaper
or
magazines
sent
Read
and
discover:
1.
Air
pollution
has
come
about
because
lots
of
harmful
gases,
dust,
and
smoke
enter
into
the
atmosphere.
to
happen,
especially
in
a
way
that
is
not
planned
Many
scientists
subscribe
to
the
view
that
global
warming
has
come
about
through
the
burning
of
fossil
fuels.
2.
With
the
use
of
electricity,
great
changes
have
come
about
in
life.
Read
and
discover:
Global
warming
has
come
about
because
of
greenhouse
gases.
1.
Global
warming
has
resulted
in
many
negative
effects.
2.
The
burning
of
more
and
more
fossil
fuels
has
resulted
in
the
increase
in
carbon
dioxide.
to
have
a
specified
effect
on;
to
lead
to;
to
cause
=
Greenhouse
gases
have
resulted
in
global
warming.
Read
and
discover:
Greenhouse
gases
have
resulted
in
global
warming.
1.
Many
negative
effects
have
resulted
from
global
warming.
2.
The
increase
in
carbon
dioxide
results
from
the
burning
of
more
and
more
fossil
fuels.
to
be
caused
by
=Global
warming
has
resulted
from
greenhouse
gases.
Where
do
greenhouse
gases
come
from?
A
large
quantity
of
greenhouse
gases
comes
from
burning
quantities
of
fossil
fuels
which
provide
the
energy
that
we
consume
every
day.
v.
to
use
energy
,clectricity,
time
etc.
1.
Industrialized
countries
consume
resources
in
huge
quantities.
2.
Some
of
the
most
efficient
refrigerators
consume
70
percent
less
electricity
than
traditional
models.
Read
and
discover:
1.
Grace
was
consumed
with
curiosity
about
her
new
neighbour.
2.
The
fire
consumed
the
building.
3.
In
order
to
survive,
human
beings
need
to
consume
food
and
water.
v.
(formal)
to
eat
or
drink
sth.
v.
to
completely
destroy
sth
v.
to
fill
sb
with
a
strong
feeling
Read
and
discover:
A
large
quantity
of
greenhouse
gases
comes
from
burning
quantities
of
fossil
fuels
which
provide
the
energy
that
we
consume
every
day.
1.
The?problem?begins?when?we?add?huge?quantities?of?extra
?carbon?dioxide?to?the?atmosphere?by?burning?fossil?fuels.
=
lots
of
2.
My
brother
bought
a
large
quantity
of
books.
Read
and
discover:
1.
The
book
shop
sold
a
quantity
of
/quantities
of
books.
2.
The
factory
releases
a
quantity
of
/
quantities
of
CO2
every
day.
3.
Large?quantities?of?CO2
are?produced
when
burning
fossil
fuels.
4.
A
large?quantity
of?
CO2
is
produced
when
burning
fossil
fuels.
a
quantity
of
/
quantities
of
+
countable
nouns
/
uncountable
noun
How
do
greenhouse
gases
warm
the
earth?
When
greenhouse
gases
continue
to
build
up
in
the
air,
they
tend
to
absorb
heat
from
the
sun
and
therefore
warm
the
earth.
=
be
likely
to
do
1.
When
it
comes
to
greenhouse
gases,
the
public
tends
to
focus
on
carbon
dioxide.
2.
Pollution
tends
to
increase
in
winter
as
coal-burning
is
still
the
main
source
of
heat.
Read
and
discover:
1.
The
nurse
is
skillfully
tending
to
the
patient
now.
to
look
after
/
take
care
of
sb.
/
sth.
3.
Low
carbon-economy
is
the
new
tendency
of
economy
development
in
the
present
society.
n.
a
general
direction
in
which
something
tends
to
move.
2.
The
ice
conditions
are
mild
since
the
1990s,
which
is
related
to
the
tendency
of
the
global
warming.
What
negative
effects
will
global
warming
result
in?
If
temperature
continues
going
up,
it
will
result
in
many
negative
consequences
like
severe
storms,
floods,
droughts,
famines
etc.
n.
an
effect
or
a
result
of
sth
that
has
happened;
1.
The
disappearance
of
ice
in
Antarctica
will
bring
serious
consequences
to
the
global
climate.
2.
Air
pollution
can
have
serious
consequences.
Read
and
discover:
If
temperature
continues
going
up,
it
will
result
in
many
catastrophes
like
severe
storms,
floods,
droughts,
famines
etc.
n.
a
disaster
or
an
unexpected
event
that
causes
great
suffering
1.
There
are
many
natural
catastrophes
occurring
in
nature.
2.
Catastrophes
will
come
if
mankind
continues
to
pollute
the
environment.
Flood
a
large
amount
of
water
covering
an
area
Drought
a
long
period
of
time
when
there
is
little
or
no
rain
Famine
a
severe
shortage
of
food
resulting
in
starvation
and
death
What
can
we
do
about
global
warming?
There
is
no
doubt
that
we
can’t
put
up
with
it
any
longer
because
we
can
take
a
range
of
measures
to
reduce
it.
There
is
no
doubt
that
...=
It
is
certain
that.../
It
is
to
be
sure
that...
1.
There
is
no
doubt
that
human
activities
result
in
global
warming.
2.
There
is
no
doubt
that
the
average
temperature
of
the
earth
will
rise
year
by
year.
Read
and
discover:
There
is
no
doubt
that
we
can’t
put
up
with
it
any
longer
because
We
can
take
a
range
of
measures
to
reduce
it.
We
can
also
advocate
improvement
in
the
way
we
use
energy!
1.
Can
you
put
up
with
global
warming
going
up?
put
up
with：to
bear
or
to
tolerate
2.
We
don’t
have
to
put
up
with
pollution,
because
individuals
can
make
a
difference.
Read
and
discover:
...
we
can’t
put
up
with
it
any
longer
because
we
can
take
a
range
of
measures
to
reduce
it...
a
range
of:
a
series
of
/
a
number
o
f
1.
Global
warming
has
resulted
in
a
range
of
serious
consequences.
2.
A
range
of
natural
catastrophes
result
from
global
warming.
Read
and
discover:
...we
can
take
a
range
of
measures
to
reduce
it.
We
can
also
advocate
improvement
in
the
way
we
use
energy!
v.
to
support
sth
publicly;
call
on
sb.
to
do
sth.
We?should?advocate?low-carbon?lifestyle
to
reduce
global
warming.
2.
Citizens
are
advocated
to
use
energy-saving
appliances.
Summary
1.
It
is
an
increase
in
the
average
temperature
of
the
earth's
surface
over
time.
It
is
not
a
random
natural
phenomenon.
2.
Greenhouse
gases
have
resulted
in
global
warming.
3.
Every
day
we
consume
a
large
quantity
of
energy
which
mainly
comes
from
burning
large
quantities
of
fossil
fuels
such
as
coal,
oil
and
natural
gas.
Summary
4.
When
greenhouse
gases
continue
to
build
up
in
the
air,
they
tend
to
absorb
heat
from
the
sun
and
therefore
warm
the
earth.
5.
If
temperature
continues
going
up
,
it
will
result
in
many
negative
catastrophes
like
severe
storms,
floods,
droughts,
famines
etc.
6.
Most
scientists
subscribe
to
the
idea
that
human’s
activities
have
resulted
in
global
warming.
Summary
7.
There
is
no
doubt
that
we
can’t
put
up
with
global
warming
any
longer
because
we
can
take
a
range
of
measures
to
reduce
it.
And
we
can
also
advocate
improvement
in
the
way
we
use
energy!
Task
2
Practice
makes
perfect
Exercise
1
:
Complete
the
passage
using
the
correct
form
of
words
and
expressions
we’ve
learnt.
quantities
of,
subscribe
to,
put
up
with,
a
quantity
of,
result
in,
a
range
of,
come
about,
advocate
Air
pollution
is
a
serious
problem.
How
has
air
pollution__________?
It
occurs
when
___________
harmful
gases,
dust,
smoke
enter
into
the
atmosphere.
Every
day
manufacturing
industries
and
automobiles
release
__________carbon
monoxide,
hydrocarbons
and
chemicals
into
the
air,
which
pollutes
the
air.
Air
pollution
has
__________
many
negative
consequences
like
global
warming,
acid
rain
etc.
So
all
scientists
__________
the
idea
that
air
pollution
results
from
human’s
activities.
There
is
no
doubt
that
we
can’t
__________
the
air
pollution
any
longer.
It
is
high
time
that
we
took
__________
measures
to
reduce
it.
We
should
__________
low-carbon
life.
Remember
our
contribution
counts!
Air
pollution
is
a
serious
problem.
How
has
air
pollution__________?
It
occurs
when
___________
harmful
gases,
dust,
smoke
enter
into
the
atmosphere.
Every
day
manufacturing
industries
and
automobiles
release
__________carbon
monoxide,
hydrocarbons
and
chemicals
into
the
air,
which
pollutes
the
air.
Air
pollution
has
__________
many
negative
consequences
like
global
warming,
acid
rain
etc.
come
about
quantities
of
a
quantity
of
resulted
in
So
all
scientists
__________
the
idea
that
air
pollution
results
from
human’s
activities.
There
is
no
doubt
that
we
can’t
__________
air
pollution
any
longer.
It
is
high
time
that
we
took
__________
measures
to
reduce
it.
We
should
__________
low-carbon
life.
Remember
our
contribution
counts!
subscribe
to
put
up
with
a
range
of
advocate
Exercise
2
:
Read
the
following
passage
and
replace
the
words
in
yellow
with
the
words
and
expressions
we’ve
learnt.
Nowadays,
water
pollution
becomes
serious.
How
has
water
pollution
happened?
With
the
development
of
industry,
plants
and
factories
pour
tons
of
industrial
wastes
into
rivers
every
day.
More
and
more
chemicals
are
released
into
the
rivers
and
lakes,
which
leads
to
water
pollution.
So,
all
scientists
agree
to
the
idea
that
water
pollution
is
caused
by
human’s
activities.
Water
pollution
has
caused
many
negative
effects.
For
example,
lots
of
seabirds
and
fish
have
lost
their
homes
and
died
because
of
the
polluted
water.
It
is
certain
that
we
can’t
bear
water
pollution.
It
is
high
time
that
we
took
a
series
of
measures
to
stop
it.
At
the
same
time
we
should
call
on
more
people
to
save
water
resources.
Nowadays,
water
pollution
becomes
serious.
How
has
water
pollution
(happened)
come
about?
With
the
development
of
industry,
plants
and
factories
pour
(tons
of)
a
quantityof
industrial
wastes
into
rivers
every
day.
More
chemicals
are
released
into
rivers,
which
(leads
to)
results
in
water
pollution.
So,
all
scientists
(agree
to)
subscribe
to
the
idea
that
water
pollution
(is
caused
by)
results
from
human’s
activities.
Water
pollution
has
caused
many
negative
(effects)
consequences
.
For
example,
(lots
of
)
quantities
of
seabirds
and
fish
have
lost
their
homes
and
died
because
of
the
polluted
water.
(It
is
certain
that)
There
is
no
doubt
that
we
can’t
(bear)
put
up
with
water
pollution.
It
is
high
time
that
we
took
(a
series
of
)
a
range
of
measures
to
stop
it.
At
the
same
time
we
should
(call
on)
advocate
more
people
to
save
water
resources.
Exercise
3
:
June
5th
is
International
Environment
Day.
Suppose
on
that
day,
on
behalf
of
your
school,
you
are
going
to
make
a
speech
on
“Global
Warming”.
Please
use
the
words
and
expressions
that
you
have
learned
today
to
prepare
the
speech.
on
behalf
of:
representing
Exercise
3
:
You
can
prepare
your
speech
from
the
following
four
aspects:
No.
1
What
is
global
warming?
No.
2
How
has
global
waring
come
about?
No.
3
What
negative
consequences
will
global
warming
result
in?
No.
4
What
can
we
do
to
deal
with
global
warming?
Possible
Version
Hello,
everyone,
Today,
I
have
great
honor
to
stand
here
to
talk
about
global
warming.
Global
warming
is
an
increase
in
the
average
temperature
of
the
earth's
surface
over
time.
It
is
a
random
natural
phenomenon.
How
has
it
come
about?
Global
warming
has
resulted
from
burning
a
large
quantity
of
fossil
fuels.
This
process
will
release
lots
of
greenhouse
gases
such
as
carbon
monoxide,
carbon
dioxide,
hydrocarbons
etc.
When
huge
quantities
of
greenhouse
gases
are
released
into
the
air,
more
heat
energy
tend
to
be
absorbed
in
the
atmosphere,
which
causes
the
temperature
to
go
up.
If
temperature
keeps
going
up,
it
will
result
in
catastrophes
like
floods,
droughts,
famines
etc.
So,
I
subscribe
to
the
view
that
human’s
activities
have
resulted
in
global
warming.
There
is
no
doubt
that
we
can’t
put
up
with
global
warming.
Therefore,
it
is
high
time
that
we
took
a
range
of
measures
to
stop
it.
First
of
all,
we
can
turn
off
the
lights
and
other
household
appliances
when
they
are
not
used.
And
we’d
better
use
public
transportation
instead
of
private
cars.
What’s
more,
we
can
advocate
improvement
in
the
way
we
use
energy.
All
in
all,
remember
our
contribution
can
make
a
difference!
That’s
all,
thank
you!
Homework
Write
down
your
speech
of
global
warming