(共33张PPT)
仁爱科普版
八年级上
SectionD
Unit
4
Our
World
Topic
1
What's
the
strongest
animal
on
the
farm
?
2.
以字母e结尾的词加-e/st
1.
一般在词尾加-er/est
3.
以重读闭音节结尾并且末尾只有一个辅音字母，先双写这个辅音字母,
再加-er/est
4.
结尾是“辅音字母+y”
的动词,
先变“y”为“i”,
再加-er/est
clever--cleverer--cleverest
small--smaller--smallest
nice--nicer--nicest
cute--cuter--cutest
hot--hotter--hottest
red--redder--reddest
easy--easier--easiest
happy--happier--happiest
比较级最高级构成
6.不规则变化
good
/well
—better—best
bad—worse—worst
little—
less—
least
many,
much—more—
most
far—farther
—
farthest
(距离远)
far
—further—
furthest
(程度深)
old
—elder—
eldest
(长幼)
old—older
—
oldest
(年龄)
5.多音节和部分双音节词在其前面加more/most
beautiful
--more
/most
beautiful
loudly--more/most
loudly
The
air
is
_______,
the
sky
is
______
and
the
rivers
are
_______
there.
I
think
the
countryside
is
_____________
the
city,
too.
I
think
the
sheep
are
the
_______
of
all.
The
pigs
must
be
the
_______
and
_______
animals
on
the
farm.
What’s
the
strongest
animals
on
the
farm
?
But
now,
rainforests
are
becoming
parative
and
superlative
degrees
of
adjectives
(Ⅰ)
nicest
fattest
laziest
smaller
and
smaller
fresher
bluer
clearer
quieter
than
_______
do
you
like
________
,
plants
or
animals
?
I
like
animals
________.
________
do
you
think
so
?
Because
animals
are
our
friends.
They
________
us
happy.
We
________
the
same
world
_______
them.
People
can
enjoy
the
__________
of
nature
there.
Functions
with
beauty
share
Which
better
better
Why
make
1
2
The
water
in
glass
1
is
colder
than
glass
2.
The
weather
of
Xiamen
is
hotter
than
that
of
Hangzhou.
代替不可数
名词
1.A…+比较级+than+B
一、两者进行比较,表示“一方比另一方更……”
The
people
in
Hangzhou
are
more
than
those
in
Xiamen.
代替可数
名词复数
如果比较对象相同，可用that/those代替第二个比较对象。
2.Who/Which
is
+
比较级，A
or
B?
Mary
is
the
taller
of
the
twins.
Mary
Merry
Which
box
is
bigger,this
one
or
that
one?
Who
is
taller,Merry
or
Mary?
The
green
box
is
the
bigger
of
the
two.
表示两者中“较……”时，用“the+形容词比较级+
of短语”来表达。
3.两个比较级用and连在一起可表达全面增加或减少，意思是
越来越……
hot
1.It’s
getting
hotter
and
hotter
in
summer.
2.English
is
more
and
more
useful.
The
higher,
the
more
dangerous.
the
+比较级，the
+比较级，表示“越……，越……”。
比较级+and+比较级
中考链接
（2018甘肃白银
武威）23.
After
two
years
physical
training,
he
was__________
and
healthier.
A.
weaker
B.
longer
C.
stronger
D.
shorter
【答案】C
【解析】句意：经过两年的体能训练，他变得更强壮、更健康。A.
weaker更弱；B.
longer更长；C.
stronger更强壮；D.
shorter更短。根据前面的After
two
years
physical
training“经过两年的体能训练”，可知应该是变得“强壮”，由连接词and可知空格处和后面的healthier是并列关系，所以也应用比较级形式，故答案选C。
中考链接
(2017.
四川遂宁)—How
do
you
improve
you
English?
—__________
you
speak,
__________
your
English
will
be.
A.
The
less;
the
more
B.
The
more;
the
better
C.
The
less;
the
better
D.
The
more;
the
less
【解析】考查比较级的用法。句意：—你怎样提高你的英语？
—_____你说，_____你的英语将会。众所周知，英语说得越多，提高越快，故选B。
1.形容词和副词的比较级可以单独使用。
e.g.
Are
you
feeling
better
today?
Try
to
do
better
next
time.
2.比较级前可加even(更加)
much(……得多)，
far(……得多)
a
little(……一点)
a
lot(大量)
来修饰，表示比较的程度，使原来的比较级别在语意上更加明确。
注意:
比较级不能用very,
so,
too,
quite等修饰。
e.g.
The
jacket
is
a
little
/
much
cheaper
than
the
sweater.
注意：
中考链接
(2017·湖南永州)
—Why
do
many
people
buy
things
online
on
Nov.
11th?
—Because
there
are
so
many
sales,
and
the
prices
are
______.
A.
much
lower
B.
more
cheap
C.
more
expensive
【解析】考查形容词比较级辨析。句意：——为什么11月11日那天很多人在网上买东西呢？——因为有如此多的折扣，并且价格是______.根据语境知，本句应是更便宜，故选A。
二、表示三者或三者以上比较,可用”Which/Who
…
+最高级,…,…or
…?”注意：形容词最高级前要加the，后面通常带of
/in短语来说明比较的范围。
1.Which
is
the
hottest
,
Xiamen,Hangzhou
or
Guangzhou?
A Ｂ Ｃ Ｄ Ｅ
2.A
is
the
fattest
of
all.
3.E
is
the
tallest
of
all.
4.C
has
the
longest
hair
of
the
five.
中考链接
（2018天津）25.
Tianjin
is
one
of
_______cities
in
China.
A.
big
B.
bigger
C.
the
biggest
D.
the
bigger
【答案】C。
【解析】本题考查形副最高级的用法，one
of
加上
the
biggest
最高级表示最大的城市之一故选C.
中考链接
(2017?云南昆明)31.
All
the
students
in
our
class
are
over
fifteen
except
Nick.
He
is
____
in
our
school.
A.
younger
B.
older
C.
the
youngest
D.
the
oldest
【答案】C
【解析】考查的是形容词的比较等级。句意：除了Nick，我们班其余的学生都超过15岁了，他是我们班最年轻的。根据“All
the
students
in
our
class
are
over
fifteen
except
Nick”可推断出“他是我们班最年轻的”。故选C。
New
drills
We
will
learn
a
passage
about
the
following
animals.
pandas
（简介）
blue
whales
（简介）
Chinese
tigers
(简介)
大熊猫已在地球上生存了至少800万年，被誉为“活化石”和“中国国宝”，世界自然基金会的形象大使，是世界生物多样性保护的旗舰物种。大熊猫是中国特有种，现存的主要栖息地是中国四川、陕西和甘肃的山区。据第四次全国大熊猫野外种群调查结果，野生大熊猫仅有1864只，其中80%以上分布于四川境内，属于中国国家一级保护动物。
截止2015年底，全世界圈养单位共圈养熊猫425只。
大熊猫（Giant
panda），属于哺乳纲、食肉目、熊科，
是大熊猫亚科和大熊猫属唯一哺乳动物。大熊猫最初是
吃肉的，经过进化，99%的食物都是竹子了，但牙齿和
消化道还保持原样，仍然划分为食肉目，发怒时危险性堪比其它熊种。野外大熊猫的寿命为18～20岁，圈养状态下可以超过30岁。
Introduction
返回
blue
whale
Background
Let's
watch
the
video
and
learn
about
the
animal.
海上巨人，有史以来最大、
最神秘的动物，却因人类的
血腥屠杀差点灭绝──蓝鲸，
地球上最大的动物，不只是
现存动物中最大，也是所有
地球曾经出现过的动物中最大。
蓝鲸长可达33米，重达181吨。最大的蓝鲸比最大的恐龙还重三倍以上；它的声音可以在深海中穿越一千多公里，呼唤浩瀚海洋中的同伴。
人类为了用鲸脂制造人造奶油、肥皂、宠物食品、肥料等工业用品，大量猎杀鲸鱼。蓝鲸因为庞大的身躯，膏腴的鲸脂，是捕鲸人极欲征服的终极目标。
返回
Introduction
华南虎（厦门虎，南中国虎），亦称“中国虎”，
华南虎头圆，耳短，四肢粗大有力，尾较长，
胸腹部杂有较多的乳白色，全身橙黄色并布满
黑色横纹。毛皮上有既短又窄的条纹，条纹的
间距较孟加拉虎、西伯利亚虎的大，体侧还常
出现菱形纹，在亚种老虎中体型较小。
华南虎以草食性动物野猪、鹿、狍等为食，是中国的十大濒危动物之一、国家一级保护动物，红色物种名录极度濒危，在野外已灭绝。
华南虎仅在中国分布，是中国特有的虎亚种。要生活在中国南方的森林山地。华南虎虽不喜欢长途泅水，却能游过较狭窄的海峡，所以还出现在像厦门等地的岛屿上。多单独生活，不成群，多在夜间活动，嗅觉发达，行动敏捷，善于游泳，但不善于爬树。
返回
Free
talk
Where
do
they
live?What
do
they
feed
on?
以……为食
They
live
in
the
forests
and
mountains.
They
feed
on
bamboo.
They
live
in
ocean.
They
feed
on
the
smallest
sea
animals.
They
live
in
the
south
of
China.
They
feed
on
small
animals.
Discussion
Why
are
some
animals
in
danger?
People
use
its
fur(皮毛)
to
make
clothes/bags/shoes.
People
kill
them
for
medicine
.
People
hunt
them
for
its
ivory(象牙)/bones.
People
kill
them
for
money
.
People
kill
them
for
meat.
People
take
away(剥夺)
the
forests
or
land.
People
make
the
water
dirty.
They
have
less
land
to
live
on.
They
don’t
have
enough
food
to
eat.
Video
time
Watch
the
flash
about
the
passage.
1
Read
and
complete
the
table
on
Page
88.
Animal
What
they
feed
on
Where
they
live
Why
they
are
in
danger
They
have
anless
d
less
land
to
live
on.
blue
whales
Chinese
tigers
in
the
south
of
China
bamboo
in
Southwest
China
smallest
sea
animals
in
the
ocean
Some
people
kill
them
and
make
the
ocean
water
dirtier.
small
animals
Some
people
kill
them
for
their
fur
and
bones.
pandas
animals
in
danger
Southwest
China
feed
on
less
and
less
land
make...dirtier
in
the
south
of
China
the
oldest
type
kill...for...
Key
phrases
1.濒危动物
2.中国西南方
3.
以......为食
4.越来越少的土地
5.使......更脏
6.在中国南部
7.最古老的品种
8.为......而杀死........
2
Write
a
passage
about
an
animal.
The
following
questions
may
help
you.
What
is
the
animal?
Where
does
it
live?
What
does
it
feed
on?
What
are
the
features
of
it?
Do
you
like
it?
Why?
When
you
describe
something,
and
compare
it
with
other
things,
you
may
use
comparative
or
superlative
forms.
中国11种最为珍贵的濒危特级保护动物
大熊猫
Giant
Panda
金丝猴
Snnb-nosed
golden
monkey
白鳍豚
Yangtze
river
dolphin
华南虎
South
China
tiger
褐马鸡
brown
eared
pheasant
朱鹮
crested
ibis
扬子鳄
Chinese
alligator
黑颈鹤
black-necked
crane
藏羚羊
Tibetan
antelope
麋鹿
Pere
David's
Deer
To
protect
animals,
to
protect
us.
Make
the
nature
colourful.
