(共26张PPT)
Unit
2
Saving
the
Earth
Topic
2
All
these
problems
are
very
serious
Section
D
1.
老师在课堂上建议大家要尽最大努力保护环境，他会这样说：
We
should
___________________________________________.
2.
你认为每个人都应该节约用水并且多种树，你可以这样呼吁：
Everyone
should
________________________________.
3.
看到Jim在看报纸，你想知道上面是否有一些新的东西，你可以这样问他：
__________________________________________,
Jim?
try/do
our
best
to
protect
the
environment
save
water
and
plant
more
trees
Is
there
anything
new
in
the
newspaper
课前检测
4.
班长告诫大家不要在教室随处吐痰，他会这样说：
Don’t
________________________________.
5.
你想知道许多肥沃的土地变成沙漠的原因，你可以这样问：
Why
has
_________________________________________?
spit
anywhere
in
the
classroom
(so)
much
rich
land
changed
into
dessert
课前检测
say,
should,
stop
The
old
man
said
the
man
should
stop
cutting
down
the
tree.
everyone,
care
for
Everyone
should
care
for
wild
animals.
课前检测
ask,
daughter
The
woman
asked
her
daughter
not
to
pick
flowers.
although,
none,
late
Although
it
rained
heavily,
none
of
them
were
late
for
school.
课前检测
so
far,
thousands
of
So
far,
thousands
of
trees
have
been
planted.
So
far,
people/they
have
planted
thousands
of
trees.
课前检测
water
pollution
Pre-reading
Imagine
if
there
is
no
water
on
the
earth,
what
will
happen?
We
should
value
the
water
and
save
the
water.
What
should
we
do?
1a
Read
the
passage
and
put
the
following
paragraphs
in
the
correct
order.
(
)
The
sea
seems
to
have
the
best
answer.
There
is
plenty
of
water
in
the
sea.
But
we
need
to
take
the
salt
away
from
the
sea
water.
This
is
very
expensive.
If
scientists
can
find
cheaper
ways
to
do
it,
we
can
solve
the
problem
of
the
shortage
of
water.
(
)
How
can
we
avoid
a
serious
water
shortage?
First,
we
should
save
water
and
not
waste
it.
Second,
we
should
protect
our
water
resources
and
not
pollute
them.
Third,
we
should
discover
ways
to
reuse
water.
Scientists
have
made
some
progress
in
this
field.
Today,
some
large
cities
are
reusing
their
water.
But
people’s
need
for
water
is
increasing
day
by
day.
We
still
don’t
have
enough
water.
What
else
can
we
do?
(
)
Although
the
world
is
hungry,
it
is
even
thirstier.
While
nearly
?
of
the
earth
is
covered
with
water,
we
are
still
short
of
drinking
water.
This
is
because
about
97%
of
the
water
on
the
earth
is
sea
water.
So
we
can’t
use
it
for
watering
plants
or
drinking
directly.
Humans
can
only
drink
and
use
fresh
water
from
places
including
rivers,
lakes
and
underground.
1
2
3
While-reading
1b
Read
1a
again
and
answer
the
questions.
1.Why
is
our
world
thirsty
when
?
of
the
earth
is
covered
with
water
?
2.
What
can
we
do
now
to
avoid
the
water
shortage?
Because
about
97%
of
the
water
on
the
earth
is
sea
water,
we
can't
use
it
for
watering
plants
or
drinking
directly.
First,
we
should
save
water
and
not
waste
it.
Second,
we
should
protect
our
water
resources
and
not
pollute
them.
Third,
we
should
discover
ways
to
reuse
water.
3.What
will
be
the
best
way
to
solve
the
problem
in
the
future
in
the
passage?
4.Do
you
know
any
other
ways
to
solve
the
problem?
What
is
it?
To
find
cheaper
ways
of
taking
the
salt
away
from
the
sea
water.
P1
P2
P3
2
Discuss
in
groups
different
ways
of
protecting
and
saving
water.
Write
down
the
key
information.
Example:
Pass
laws(
n.法律)
against
water
pollution.
Collect
and
reuse
waste
water.
…
…
Post-reading
3.
Write
a
proposal
about
saving
water
to
all
the
students
in
your
school.
My
dear
friends,
Water
is
very
important
to
human
beings.
Let’s
do
something
to
protect
and
save
it.
First,
________________
.
Second,_________________.
Third,
_________________.
Let’s
try
our
best
to
save
water
and
our
planet.
_____________
My
dear
friends,
Water
is
very
important
to
human
beings.
Let’s
do
something
to
protect
and
save
it.
First,
we
should
protect
our
water
resources
and
not
pollute
them.
The
government
should
also
pass
laws
against
the
water
pollution.
Second,
we
should
save
water
in
our
daily
life,
turn
off
the
taps
in
time,
take
a
shower
instead
of
a
bath,
and
always
remember
to
collect
and
reuse
water.
Third,
let’s
try
to
spread
the
message
about
protecting
and
saving
water.
Make
more
people
around
us
know
the
problem
of
water
shortage
and
how
to
help
solve
it.
Let’s
try
our
best
to
save
water
and
our
planet.
Amy
You
can
write
it
like
this.
只能跟动名词的单词或词组：
enjoy,
finish,
practice,
suggest
/
advise,
miss,
mind,
consider,
imagine,
allow,
keep
give
up,
can't
help,
be
/
get
used
to,
pay
attention
to,
look
forward
to,
feel
like
v.防止，避免
Language
points
名词
avoid
代词
动名词
e.g.
He
avoided
answering
my
questions.
1.
How
can
we
avoid
a
serious
water
shortage?
我们如何避免水资源短缺呢？
discover,
invent,
find的区别：
1.
discover：发现，指发现某种本来存在而未被发现的东西
2.
invent：发明
3.
find：寻找
I
discovered
she
was
a
good
cook.
Edison
invented
the
light
bulb.
I
looked
for
Mike
everywhere
but
I
didn't
find
him.
v.发现，找到
Language
points
2.…we
should
discover
ways
to
reuse
water.我们需要找到再利用水的方法。
thirsty
adj.缺水的;（口）渴的
nearly
adv.几乎，将近
nearly
与almost
区别
：
almost
多表示时间、程度、距离、进度，
且almost
可以修饰more
than,
too,
nothing,
nobody,
nowhere,
no
one,
none,
never
等词，nearly
则不行。nearly只与not连用。
e.g.
I
have
almost
never
seen
him.
I
nearly
didn’t
hear
what
the
teacher
said
in
class.
3.Although
the
world
is
hungry,
it
is
even
thirstier
虽然世界是饥饿的，但是他更渴。
4.While
nearly
?
of
the
earth
is
covered
with
water
,
we
are
still
short
of
drinking
water.
尽管地球差不多四分之三都被水覆盖，我们仍然缺少饮用水。
Language
points
Project
Making
Posters
About
Natural
Resources
Divide
the
class
into
several
groups:
Water
Group,
Tree
Group,
Soil
Group
…
Each
group
should
discuss
their
own
uses,
the
problems
that
they
face
and
their
wishes.
Then
give
a
report
in
class.
Example:
Uses:
I
am
soil.
Plants
can’t
grow
without
me.
People
use
me
to
make
many
things
…
Problems:
Sometimes
people
use
too
many
chemicals
in
the
fields.
What’s
worse,
they
put
waste
into
the
land
…
So
I’m
hurt.
Please
help
me.
Wishes:
I
hope
human
beings
can
protect
and
take
care
of
me.
And
then
I
could
do
more
useful
things
for
them…
3.
Make
some
posters
with
the
result.
Indefinite
pronoun
and
adverb
不定代词和副词
一、构成。
不定代词、副词是由some,
any,
no,
every与thing,
one,
body,
where
等构成。
somebody,
someone,
something,
somewhere
anybody,
anyone,
anything,
anywhere
none,
nobody,
nothing,
nowhere
everybody,
everyone,
everything,
everywhere
二、用法。
1．通常情况下,由some,
every加后缀构成的不定代词、副词常用于肯定句；由any加后缀构成的不定代词、副词常用于疑问句、否定句中。
E.g.
You
will
find
your
bag
somewhere.
Can
you
hear
anything?
2.
注意：当说话人希望得到肯定答复,或是表示建议、请求等意图时,something,
somebody,
someone也可以用于疑问句中。当要表达“任何人；任何事物”时,anything,
anybody,
anyone也可以用于肯定句中。
E.g.
Would
you
like
something
to
drink?
Anybody
can
do
it
except
Tom.
Grammar
Grammar
Indefinite
Pronoun
and
Adverb
_______of
us
likes
pollution.
Don’t
spit
___________
in
public.
_________
should
care
for
wild
animals
and
plant
more
trees.
We
should
do
___________
we
can
to
protect
the
environment.
None
anywhere
Everyone
everything
Functions
______
a
result（结果）,
a
lot
of
rich
land
has
changed
_________
（变为）desert.
Trees
can
stop
the
wind
from
________
the
earth
_____(吹走）.
We
shouldn’t
leave
rubbish
_____________(到处).
All
these
problems
are
very
serious,_____(所以)
we
must
do
something
now.
into
blowing
away
here
and
there
so
As
We
learn:
1.Some
words:
avoid,
discover,
thirsty,
nearly,
law
2.Some
phrases:
day
by
day,
be
short
of
3.Some
sentences:
(1)But
people’s
need
for
water
is
increasing
day
by
day.
(2)While
nearly
?
of
the
earth
is
covered
with
water,
we
are
still
short
of
drinking
water.
We
can:
1.Talk
about
ways
of
saving
water.
2.Summarize
and
use
the
indefinite
pronoun
and
adverb
correctly.
3.
Write
a
proposal.
Summary
Exercises
If
we
want
to
use
the
sea
water,
we
must
______
_____
(拿走）
the
salt
from
the
sea
water.
How
can
we
_______(避免)
a
serious
water
shortage?
We
should
________(找到)
ways
to
reuse
water.
People’s
need
for
water
is
increasing
____________(一天天).
Although
the
world
is
hungry,
it
is
even
______(更渴的)
While
_______(几乎，差不多)?
of
the
earth
is
covered
with
water,
we
are
still
short
of
drinking
water.
take
away
avoid
discover
day
by
day
thirstier
nearly
二、
单选。
1.
Do
you
know
about
the
Columbus（哥伦布）?
Yes,
he
America
in
1942.
A.
discovered
B.
invented
C.
has
discovered
D.
has
invented
2.
He
tried
to
avoid
my
question.
A.
to
answer
B.
answer
C.
answering
D.
answers
3.
The
ground
is
with
snow.
A.
covering
B.
covered
C.
cover
D.
discover
4.
In
the
past,
farmers
lived
a
poor
life
and
had
to
eat.
A.
plenty
of
B.
few
C.
little
D.
much
5.
Water
cellars
for
mother（母亲水窖）aims
to
help
people
who
.
drinking
water
in
western
parts
of
China.
A.
are
short
of
B.
be
short
of
C.
have
enough
D.
is
enough
6.
The
clouds
are
getting
togrther.
It
rain.
A.
seems
B.
seems
to
C.
seems
that
D.
seeming
Homework
2.
完成作文：Saving
the
earth。
1.
复习Topic
2。
3.
完成练习册Section
D和综合提升。
4.
预习Section
A
in
Topic
3.。
Section
D
复习重点：
1.
只能跟动名词的单词或词组：
enjoy,
finish,
practice,
suggest
/
advise,
miss,
mind,
consider,
imagine,
allow,
keep,
give
up,
can't
help,
be
/
get
used
to,
pay
attention
to,
look
forward
to,
feel
like
2.
discover,
invent,
find的区别：
(1)
discover：发现，指发现某种本来存在而未被发现的东西
(2)
invent：发明
(3)
find：寻找
3.
nearly
与almost
区别
：
almost
多表示时间、程度、距离、进度，
且almost
可以修饰more
than,
too,
nothing,
nobody,
nowhere,
no
one,
none,
never
等词，nearly
则不行。nearly只与not连用。
