中小学教育资源及组卷应用平台
Section
C教学设计
一、教材分析：
本课是九年级第二单元第二话题的第三课时，主活动是1a和3。通过阅读1a，进一步学习各种污染对地球造成的危害和造成这些污染的原因，培养学生通过图片预测文章大意的能力，其中出现了很多关于环境的专业术语，需要学生了解。1b是训练学生运用不同的阅读策略完成不同的任务，如：通过观察1a中的图片匹配相应的标题，再阅读文章，给每段话选择标题；另外，继续训练学生通过语境，找出单词指代的内容；最后在理解课文的前提下，归纳文章的大意。1c培养学生通过精读文章，学会用简单的词句做笔记，再通过1c表格中的内容简要复述文章大意。2是培养学生的资源策略。要求学生合理地运用网络资源查找与环境危害相关的信息，然后进行小组讨论，并要求学生做好笔记，为任务3做准备。3要求学生运用这些信息，在1c和2的基础之上进行写作练习，教师应强调衔接词在作文中的重要性。由于课堂上不方便完成2，因此，可将2和3安排为课后作业。通过读写的结合训练，引导学生关注全球环境的现状，意识到环境保护的重要性，树立正确的环保观念。
二、教学目标：
1.知识目标
掌握本课的重点词汇和短语，初步感知定语从句。
进一步学习各种污染对地球造成的危害和造成这些污染的原因。
2.技能目标
能读懂有关环境问题的文章。
能根据不同的阅读目的，运用简单的阅读策略获取信息。
能正确运用网络资源获取需要的信息。
能用英语书面的形式表达环境问题的成因及危害。
3.情感目标
通过学习，了解环境现状，帮助学生树立绿色环保意识。
了解各种环境问题，如臭氧空洞，温室效应等，意识到环境问题的严峻形势。
三、教学重难点：
1.
教学重点
Words
and
phrases:
hole,
form,
rise,
oxygen,
ozone
layer,
radiation,
directly,
carbon
dioxide,
blanket,
escape,
the
greenhouse
effect,
refer,
during
this
period,
take
away,
pass
through
Sentences:
(1)
Forests
have
become
deserts,
so
more
and
more
sorts
of
animals
and
plants
are
disappearing.
(2)
As
a
result,
many
rivers
and
lakes
are
now
dead.
(3)
Too
much
harmful
radiation
from
the
sun
passes
through
the
hole
and
reaches
the
earth
directly.
(4)
It
causes
the
level
of
the
oceans
to
rise
and
the
climate
of
the
earth
to
change.
(5)
When
it
rains
or
when
the
wind
blows,
the
earth
is
taken
away.
(6)
The
heat
from
the
sun
can’t
escape,
so
the
temperature
is
rising.
Grammar:
indefinite
pronoun
and
adverb
2.
教学难点：
理解有关环境方面的专业术语。
能读懂与环境问题相关的科普类文章。
能运用所学知识，写出谈论环境现状的文章。
四、学习策略
能在阅读不同体裁的材料时，运用不同的阅读策略获取信息。
善于利用插图预测科普类文章的内容。
能合理运用思维导图，拓展写作思路和开拓视野。
恰当使用连接词，使自己的作文流畅，有逻辑层次。
五、教学过程：
教学环节
教师活动
学生活动
设计意图
复习导入
1.
Play
the
video,
Pollution-
Biggest
World
Problem.
Let
the
Ss
answer
the
question:
What
pollution
has
been
mentioned
in
the
video 2.
Ask
the
Ss
to
answer
What
we
should/shouldn’t
do
to
protect
the
environment.
3.
Lead
to
the
new
section.
观看视频，回答问题回答问题
吸引兴趣复习导入
讲授新课
1．Show
the
pictures
in
1a
and
ask
the
Ss
to
predict
the
main
idea
of
the
passage.2.
Show
the
pictures
one
by
one
and
lead
students
to
talk
about
them
with
the
help
of
given
words
and
phrases.3.
Let
the
Ss
watch
the
video
of
1a
and
understand
it.4.
Let
the
Ss
read
1a
and
complete
the
reading
tasks.5.
Ask
the
Ss
give
a
self-introduction
as
the
earth.6.
Ask
the
Ss
to
make
a
mind
map
for
the
passage.7.
Encourage
the
Ss
to
retell
the
passage
with
the
help
of
the
mind
map.8.
Translate
the
sentences
into
English
to
make
sure
the
Ss
understand
the
key
sentences
and
have
the
ability
to
write
similar
ones.
根据图片预测课文大意；一幅幅查看图片并用提示信息来表达。观看1a的视频并理解课文阅读1a并完成1b中的任务；以地球的身份做一个自我介绍。根据短文绘制思维导图。利用导图来复述课文。翻译句子。
发现图片主题有助于提升听力第三节的应试能力。看图说话提升表达能力听长篇短文，可设置一些简单的问题，如排序型。从不同角度理解文本。思维导图的应用对阅读和写作都有非常重要的意义和作用。给汉语翻译英语，还原课文。一方面检测课文理解程度，另一方面也让学生有机会反思自己写作中常出现的一些问题。
课堂小结
1、小结本课学习要点2、布置作业
总结本课知识点
板书
21世纪教育网
www.21cnjy.com
精品试卷·第
2
页
（共
2
页）
HYPERLINK
"http://www.21cnjy.com/"
21世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
Section
C
随堂练习
1、
对下列句子的划线部分提问
1．The
students
are
planting
trees
on
the
hills
now.
________
________
the
students
planting
trees
now
2．The
meeting
has
been
on
for
two
hours.
________
________
________
the
meeting
________
on
3．It’s
July
1
today.
________
________
________
________
today
4．He
has
been
to
Japan
twice.
________
________
________
________
he
________
to
Japan
5．I
have
learned
French
since
last
week.
________
________
________
you
________
French
2、完型填空
When
learning
new
vocabulary,
don’t
just
memorize
a
list
of
words.
Instead,
try
to
___1___five
sentences
using
each
word.
Then
use
the
new
word
as
often
as
you
can
___2___day
you
learn
it.
This
___3___you
will
remember
new
words
much
longer.
Practicing
sounds,
you
know,
is
___4___
—the
“th”
sound
for
example.
Choose
words
that
begin
___5___
“th”
and
repeat
them
over
and
over
again
___6___you
are
comfortable
with
them.
Let’s
try!
This,
that,
those,
them,
think,
thought,
through,
thin,
thick…
Read,
read,
read—in
English,
of
course!
Reading
is
one
of
the
best
ways
to
increase
your
vocabulary
___7___improve
your
grammar
in
a
natural
and
fun
way.
Be
___8___to
choose
topic
or
books
you
are
interested
in.
When
someone
is
speaking
in
English,
____9____the
main
point.
If
you
hear
a
word
you
don’t
understand,
ignore
(忽略)
it
and
go
on
listening.
If
you
stop
and
think
about
the
word,
you
will
___10___everything
else
the
person
is
saying.
Always
remember—Practice
makes
perfect.
(
)
1.
A
say
B.
make
C.
remember
D.
speak
(
)
2.
A.
the
first
B.
the
second
C.
each
D.
some
(
)
3.
A.
day
B.
time
C.
way
D.
word
(
)
4.
A.
difficult
B.
terrible
C.
funny
D.
easy
(
)
5.
A.
with
B.
from
C.
at
D.
in
(
)
6.
A.
when
B.
after
C.
until
D.
since
(
)
7.
A.
but
B.
so
C.
or
D.
and
(
)
8.
A.
quick
B.
sure
C.
important
D.
necessary
(
)
9.
A.
look
for
B.
see
C.
listen
for
D.
hear
3、(
)
10.
A.
miss
B.
guess
C.
get
D.
catch
4、阅读理解
Little
Tom
down
the
street
calls
our
dog
"The
keep
dog".
Zip
is
a
sheep
dog.
But
when
Tom
tries
to
say"
Seep",
it
comes
out
"keep".
And
in
a
way
Tom
is
right.
Zip
is
always
bringing
things
home
for
us
to
keep!
I'll
tell
you
about
some
of
them.
Zip's
first
present
was
a
shoe.
It
was
made
of
green
silk.
We
didn't
know
how
Zip
found
the
shoe.
But
after
a
moment
Mary,
my
big
sister,
told
me
the
shoe
had
a
strange
smell.
I
nodded(点头)and
held
my
nose.
"What
do
you
think
it
is "
"It
smells
like
something
for
cleaning.
I
think
someone
tried
to
clean
a
spot
(污点)
off
the
shoe.
Then
he
put
it
at
the
door
to
dry."
"Along
came
Zip.
And
good-bye
shoe!"
I
said.
"We
should
take
it
back."
"We
can't
".
said
my
sister.
"Maybe
little
Tom
is
right,"
Mary
said.
"Maybe
Zip
is
a
keep
dog!"
1.
The
writer
and
Mary
didn't
know______.
A.
what
Zip's
first
present
was
B.
how
Zip
carried
its
first
present
home
C.
who
owned
Zip's
first
present
D.
what
Zip's
first
present
was
made
of
2.
Tom
calls
Zip
"the
keep
dog"
because
______.
A.
the
dog
likes
keeping
things
B.
the
dog
likes
playing
with
shoes
C.
he
doesn't
know
the
dog's
name
D.
he
can't
pronounce
the
word
"
sheep"
well
3.
What
made
the
shoe
strange
was
______.
A.
its
colour
B.
its
smell
C.
its
size
D.
that
it
was
a
silk
one
4.
The
word
"keep”
in
the
last
sentence
means
"_____"
A.
keeping
things
for
itself
B.
bringing
things
for
other
to
keep
C.
not
letting
it
run
about
D.
taking
care
of
a
small
child
5.
We
can
know
from
the
reading
that
the
dog
_____.
A.
likes
to
give
presents
to
people
B.
has
been
kept
in
at
the
writer's
home
C.
has
brought
some
trouble
D.
likes
to
be
called
"the
keep
dog"
答案
一、
1．Where
are
2．How
long
has;
been
3．What
is
the
date
4．How
many
times
has;
been
5．How
long
have;
learned
二、
1-5
B
A
C
A
A
6-10
C
D
B
C
A
三、
1-5
B
C
D
A
D
6-10
B
B
A
D
B
21世纪教育网
www.21cnjy.com
精品试卷·第
2
页
（共
2
页）
HYPERLINK
"http://21世纪教育网(www.21cnjy.com)
"
21世纪教育网(www.21cnjy.com)(共26张PPT)
Unit
2
Saving
the
earth
Topic
2
All
these
problems
are
very
serious.
Section
C
对的英语工作室
YESENGLISH
Video:
Pollution
–
Biggest
World
Problem
What
should
we
do
to
protect
the
environment
We
should
do
everything
we
can
to
protect
the
environment.
We
should/shouldn’t
…
Look
and
Predict.
Look
at
the
following
pictures
and
predict
the
main
idea.
cities;
pollute;
health
problems
Look
at
the
following
pictures
and
predict
the
main
idea.
factories;
the
land
and
the
air;
dead
Look
at
the
following
pictures
and
predict
the
main
idea.
cut
down;
millions
of;
take
away
the
earth;
become
deserts
Look
at
the
following
pictures
and
predict
the
main
idea.
the
ozone
layer;
protect
from;
harmful
radiation.
Look
at
the
following
pictures
and
predict
the
main
idea.
carbon
dioxide;
form;
blanket;
heat
can’t
escape;
the
greenhouse
effect
Watch
and
Understand
Reading
Tasks
2.What
does
our
planet
mean
here
A.
The
sun.
B.
Mars.
C.
The
moon.
D.
The
earth.
3.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
4.The
word
it
in
Paragraph
5
refers
to
____.
A.
CO2
B.
O3
C.
O2
D.
H2O
5.
What
is
the
best
title
for
this
passage
A.
Environment
Problems
B.
Pollution
on
the
Earth
C.
Hope
for
the
Future
D.
The
Greenhouse
Effect
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
Suppose
you
are
the
earth,
please
give
us
a
self-introduction.
Fewer
trees
Traffic
pollution
Factory
pollution
The
ozone
hole
More
carbon
dioxide
Make
a
Mind
Map
problems
Translate
地球已经有46亿岁了。
The
earth
is
4.6
billion
years
old.
我们人类生活在地球上只有三万五千年，但是在此期间(period)，我们在许多方面改变了我们的星球(planet)。
We
humans
have
lived
on
the
earth
for
only
35000
years,
but
during
this
period,
we
have
changed
our
planet
a
lot
in
many
ways.
我们做的一些事情对地球有益，而其它的却有害。
Some
things
we
have
done
are
very
good
for
the
earth
while
others
are
bad.
Translate
在全世界，人们已经砍掉了数百万棵树木。
All
over
the
world,
people
have
cut
down
millions
of
trees.
下雨或刮风时，土壤被带走。
When
it
rains
or
when
the
wind
blows,
the
earth
is
taken
away.
森林变成了沙漠，如此多各类的动植物正在消失(disappear)。
Forests
have
become
deserts,
so
many
kinds
of
animals
and
plants
are
disappearing.
Translate
在大城市，小汽车和公共汽车污染了空气。
In
big
cities,
cars
and
buses
have
polluted
the
air.
现在，城市里的许多人都有健康问题。
Now
many
people
in
cities
have
health
problems.
Translate
工厂也污染了土地和水。
Factories
have
also
polluted
the
land
and
the
water.
结果，现在许多河流和湖泊都失去了生机(be
dead)。
As
a
result,
many
rivers
and
lakes
are
now
dead.
Translate
在地球周围，有一种特殊的氧气(oxygen)叫做臭氧（03）。它对地球非常重要。
Around
the
earth,
there’s
a
special
kind
of
oxygen
called
“ozone”.
It’s
important
to
the
earth.
但是现在空气污染正在破坏它，而且使臭氧层(the
ozone
layer)产生了一个大非常大的洞(hole)。
But
now
air
pollution
is
destroying
it
and
making
a
very
big
hole
in
the
ozone
layer.
太多来自太阳的有害射线穿过这个洞直接到达地球大气层。
Too
much
harmful
radiation
from
the
sun
passes
through
the
hole
and
reaches
the
earth
directly.
这是非常危险的，因为这种射线能导致癌症。
This
is
very
dangerous
because
this
kind
of
radiation
can
cause
cancer.
Translate
空气中的二氧化碳(carbon
dioxide)大量增多。
Carbon
dioxide
in
the
air
has
increased
a
lot.
它主要来自于燃烧的油、煤和木材。
It
mainly
comes
from
burning
oil,
coal
and
wood.
这在地球周围形成(form)了一条毯子(blanket)。
This
has
formed
a
blanket
around
the
earth.
来自太阳的热量不能散发，所以气温(temperature)正在升高。
The
heat
from
the
sun
can’t
escape
so
the
temperature
is
rising.
这被称作“温室效应”(the
greenhouse
effect)。
This
is
called
“the
greenhouse
effect”.
它导致海平面升高，而且地球的气候(climate)变化。
It
cause
the
level
of
the
oceans
to
rise
and
the
climate
of
the
earth
to
change.
Translate
所有这些问题都非常严峻(serious)，所以我们现在必须做些事情。
All
these
problems
are
very
serious,
so
we
must
do
something
now.
Summary
We
learn:
1.
some
words
:
oxygen,
hole,
ozone
layer,
radiation,
directly,
carbon
dioxide,
form,
blanket,
escape,
rise,
the
greenhouse
effect
2.
some
phrases:
take
away,
refer
to
3.
some
sentences
:
①
During
this
period,
we
have
changed
our
planet
a
lot
in
many
ways.
②
When
it
rains
or
when
the
wind
blows,
the
earth
is
taken
away.
③
Now
many
people
in
cities
have
breath
problem.
④
It
causes
the
level
of
the
oceans
to
rise
and
the
climate
of
the
earth
to
change.
We
can:
1.
Talk
about
environmental
problems.
2.
Retell
a
passage
with
the
notes.
THANK
YOU
https://www.21cnjy.com/help/help_extract.php
