(共30张PPT)
Unit
13
We’re
trying
to
save
the
earth.
Section
A
(3a-3b)
1.
He
___
go
out
with
his
parents,
but
now
he
_____
stay
at
home
alone.
A.
use
to;
is
used
to
B.
is
used
to;
used
to
C.
use
to;
used
to
D.
is
used
to;
is
used
to
2.
The
interesting
book
___
me
10
yuan.
A.
took
B.
paid
C.
spend
D.
cost
3.
We
must
do
something
useful
to
___
pollution.
A.
cut
off
B.
cut
up
C.
cut
down
D.
cut
in
4.
Smoking
can
___
lung
cancer.
you'd
better
give
it
up.
A．work
on
B．lead
to
C．take
away
D．put
out
5.
--What
are
the
___
of
bike
riding?
--
It
can
help
cut
down
air
pollution.
A．advantage
B．reasons
C．results
D．ideas
用方框中所给词的适当形式填空。
1.
Don't
throw
_______(垃圾)
everywhere.
2.
In
winter,
many
people
burn
______(煤)
to
keep
warm.
3.
The
police
found
a
body
at
the
________(底部)
of
the
lake.
4.
The
______(花费)
of
living
in
big
cities
is
very
high.
5.
He
keeps
a
rabbit
in
a
big
_______(木制的)
box.
cost
wooden,
coal
,
bottom,
litter
cost
wooden
coal
bottom
litter
Read
the
passage
about
sharks
and
complete
the
fact
sheet
below.
3a
Many
have
heard
of
shark’s
fin
soup.
This
famous
and
expensive
dish
is
especially
popular
in
southern
China.
But
do
you
realize
that
you’re
killing
a
whole
shark
each
time
you
enjoy
a
bowl
of
shark’s
fin
soup?
When
people
catch
sharks,
they
cut
off
their
fins
and
throw
the
shark
back
into
the
ocean.
Without
a
fin,
a
shark
can
no
longer
swim
and
slowly
dies.
This
method
is
not
only
cruel,
but
also
harmful
to
the
environment.
Sharks
are
at
the
top
of
the
food
chain
in
the
ocean’s
ecosystem.
If
their
numbers
drop
too
low,
it
will
bring
danger
to
all
ocean
life.
Many
believe
that
sharks
can
never
be
endangered
because
they
are
the
strongest
in
their
food
chain.
But
in
fact,
around
70
million
sharks
are
caught
and
traded
in
this
industry
every
year.
The
numbers
of
some
kinds
of
sharks
have
fallen
by
over
90
percent
in
the
last
20
to
30
years.
Environmental
protection
groups
around
the
world,
such
as
WildAid
and
the
WWF,
are
teaching
the
public
about
“finning”.
They
have
even
asked
governments
to
develop
laws
to
stop
the
sale
of
shark’s
fins.
So
far,
no
scientific
studies
have
shown
that
shark’s
fins
are
good
for
health,
so
why
eat
them?
Help
save
the
sharks!
Sharks
are
endangered,
read
the
passage
and
judge
the
sentences.
Read
the
first
paragraph
1.
Shark’s
fin（鱼鳍）soup
is
famous
and
expensive
all
around
the
world.
2.
We
have
to
kill
a
whole
shark
to
get
a
bowl
of
shark’s
fin
soup.
×
√
Read
the
second
paragraph
1.
People
cut
off
sharks’
fins
and
throw
the
sharks
back
into
the
ocean.
2.
Sharks
are
in
the
bottom
of
the
food
chain
in
the
ocean’s
ecosystem.
√
×
n.
生态系统
食物链
Read
the
third
paragraph
1.
WildAid
and
the
WWF
are
environmental
protection
groups
in
China.
2.
Shark’s
fins
are
good
for
health.
×
×
Read
the
passage
again
and
fill
in
the
blanks
with
the
words
in
the
box.
so
although
if
but
when
Many
people
do
not
realize
they
are
killing
a
whole
shark
______
they
enjoy
a
bowl
of
shark
fin
soup.
2.
Sharks
are
at
the
top
of
the
food
chain,
____
if
their
numbers
drop,
the
ocean’s
ecosystem
will
be
in
danger.
when
so
3b
3.
Many
think
that
sharks
are
too
strong
to
be
endangered,
_____
they
are
wrong.
4.
_________
there
are
no
scientific
studies
to
support
this,
a
lot
of
people
believe
that
shark
fins
are
good
for
health.
5.
Sharks
may
disappear
one
day
___
we
do
not
do
something
to
stop
the
sale
of
shark
fins.
but
Although
if
adj.
科学上的，科学的
1.
A
shark
can
no
longer
swim
and
slowly
dies.
鲨鱼不能再游泳然后慢慢死掉。
no
longer意思是“不再”
I’m
no
longer
a
student.
我不再是个学生了。
有两个短语和no
longer同义，即not…any
longer和not…any
more，但他们侧重的方面不同。
Language
points
no
longer和not…any
longer侧重时间。
e.g.
He
no
longer
lives
here.
=
He
doesn’t
live
here
any
longer.
他不在这儿居住了。(一个时间以前他住
在这儿，过了这个时间，他就离开了。)
not…any
more侧重程度和数量
e.g.
You
can
drink
no
more.
=
You
can’t
drink
any
more.
你不能再喝了。(喝酒的量到了一定程
度，不能再继续下去了。)
2.
This
method
is
not
only
cruel,
but
also
harmful
to
the
environment.
这种方法不但残忍而且对环境有害。
not
only…but
also…
用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;
其中的also有时可以省略。
e.g.
She
not
only
plays
well,
but
also
writes
music.
她不但很会演奏，而且还会作曲。
Not
only
men
but
also
women
were
chosen.
不仅仅是男的，女的也有被选中的。
若连接两个成分作主语，其谓语通常与靠近的主语保持一致。
e.g.
Not
only
you
but
also
he
has
to
leave.
不只是你，他也得离开。
not
only放在句首，后接句子时要用倒装结构。
e.g.
Not
only
had
the
poor
man
been
fined,
but
also
he
had
been
sent
to
prison.
这个可怜的人不仅被罚款，而且还被
送进了监狱。
be
harmful
to
对……有害
e.g.
Smoking
is
harmful
to
the
health.
吸烟有害健康。
Playing
computer
games
much
is
harmful
to
students.
电脑游戏玩太多对学生有害。
3.
Sharks
are
at
the
top
of
the
food
chain
in
the
ocean’s
ecosystem.
鲨鱼位于海洋生物系统食物链的顶部。
at
the
top
of
在……最高地位;
用最高[最大]的(速度,
声音等)
e.g.
I
looked
at
the
top
of
his
head,
his
hair
shiny
and
parted
smoothly.
我看他的头顶,
头发闪亮且平滑的分开。
He
shouted
at
the
top
of
his
voice
in
order
that
he
might
be
heard.
他尽力大声叫喊,
以便别人能听见。
4.
If
their
numbers
drop
too
low,
it
will
bring
danger
to
all
ocean
life.
如果它们的数目降至过低，会给所有
海洋生物带来危险。
此句复数形式的numbers表达全海洋中鲨
鱼的总量。当表示数值的高或低时，number要用high或low修饰。
e.g.
In
that
country,
the
number
of
children
going
to
school
is
higher
in
cities
than
in
towns
and
village.
在那个国家，城市儿童入学人数比乡镇
及农村要高。
常与number搭配的动词有grow,
fall等。
e.g.
The
number
of
families
that
own
cars
has
been
growing
quickly
recently.
近来拥有轿车的家庭数量增长很快。
5.
Environment
protection
groups
around
the
world,
such
as
WildAid
and
the
WWF,
are
teaching
the
public
about
“finning”.
世界各地的环境保护组织，如野生救援协
会和世界自然基金会，都在教育公众有关
“猎翅”的行为。
1)
句中fin本为名词，指
“鱼鳍”。此句中的
finning由动词化的fin（割鲨鱼鳍以获取
鱼翅）的-ing形式转化而成，指课文中所
陈述的
“猎翅”这一行为。
2)
WildAid和WWF组织
WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全称为World
Wide
Fund
for
Nature，成立于1961年，是享有国际盛誉，全球最大的独立性非政府环境保护组织之一。
用方框中词的适当形式完成下面的句子。
(1)
I
think
it’s
____
to
make
such
a
young
boy
work
all
day.
(2)The
poor
fisherman
can’t
_____
his
children’s
education.
(3)
I
think
the
government
must
develop
_____
to
protect
environment.
(4)
Eating
too
much
junk
food
is
_______
your
health.
(5)
He
can
use
different
_______
to
work
out
the
problem.
method,
cruel,
harmful,
afford,
law
cruel
afford
law
harmful
method
II.
单项选择。
1.
—Are
you
going
to
_____
any
of
the
events?
—Yes.
Maybe
long
jump
and
high
jump.
A.
take
part
in
B.
join
C.
attend
D.
join
in
2.
I
can’t
afford
____
him
an
expensive
birthday
present.
A.
to
buy
B.
buying
C.
for
buying
D.
buy
3.
—Remember
to
____
the
lights
when
you
leave
the
room.
—OK.
I
will.
A.
turn
on
B.
turn
down
C.
turn
up
D.
turn
off
4.
The
girl
always
has
some
money
to
___
snacks.
A.
spend
B.
pay
for
C.
take
D.
cost
5.
—Look!
_____
boys
are
playing
on
the
playground.
—Yes.
_____
them
is
about
200.
A.
The
number
of;
A
number
of
B.
The
number
of;
The
number
of
C.
A
number
of;
the
number
of
D.
A
number
of;
A
number
of
III.
根据汉语提示完成句子。
1.
我们必须采取行动来阻止他们。
We
must
_____
______
to
stop
them.
2.
我从没听说过这个人。
I
have
never
____
____
such
a
man.
3.
我们乐意尽力帮你摆脱困境。
We
are
glad
to
do
what
we
can
do
___
___
___.
4.
到目前为止，我已经交了二十个朋友。
____
____,
I
have
made
twenty
friends.
5.
实际上，她从没去过那儿。
____
____,
she
has
never
been
there.
In
fact
take
action
heard
of
to
help
out
So
far
