(共33张PPT)
Unit
3
Care
for
the
Earth
陕旅六年级上册
Part
A
Which
picture
is
more
beautiful?
Green
earth绿色地球
Gray
earth
灰色地球
Today
we
are
going
to
learn
how
to
care
for
our
green
earth.
care
for
earth
pick
flowers
dirty
关爱；照料
地球
采；摘
砍伐；把…砍倒
cut
down
摘花
make
the
air
dirty
脏的
waste
污染空气
pick
浪费
drive
drive
a
car
more
World
Car
Free
Day
驾驶；（开车）
开车
更多的
世界无车日
have
to
必须；不得不
something
某事；某物
think
想；认为
Bird
：Help！Help！
Colin
:
What’s
the
matter
,
little
bird?
Bird
:
I
can’t
find
my
home.
What
should
I
do?
Colin
:
Oh,
poor
little
bird!
Fish
:
Help!
Help!
Wu
Chen:
What’s
the
matter,
little
fish?
Fish
:
The
water
is
too
dirty.
I
can’t
live
here.
Wu
Chen:
Oh,
poor
little
fish!
Why
does
the
little
bird
and
little
fish
say
help?
Little
bird:
Because
the
trees
are
cut
down(被砍伐)，
the
little
bird
loses
its
home
—
forest.
So
it
calls
for
help.
Little
fish:
Because
the
water
is
polluted(被污染),
the
river
becomes
dirty.
So
the
fish
has
no
place
to
live.
What
should
we
do？
pick
flowers
摘花
We
should
not
pick
flowers.
cut
down
trees
砍伐树木
Cutting
down
trees
is
bad
for
our
earth.
make
the
air
dirty污染空气
The
new
factory
makes
the
air
dirty.
waste
water
浪费水
Water
is
priceless(无价的),
we
should
not
waste
water.
drive
a
car驾驶；开车
My
father
can
drive
a
car.
the
earth地球
We
should
protect(保护)
the
earth.
Are
these
behaviors
good
for
our
earth?
No,
they
are
bad
for
our
earth
.Picking
flowers
and
cutting
down
trees
make
our
forest
less
and
less(越来越少)
.
Driving
cars
make
the
air
dirty.
We
should
stop
these
bad
behavior
so
that
we
have
a
good
earth.
Mom
:
Some
more
soup
,
dear?
Su
Nan
:
Thanks
,
Mom.
But
I
have
no
time.
I
have
to
clean
my
bike.
Mom
:
Are
you
going
to
school
by
bike?
Why
not
go
in
your
dad’s
car?
Su
Nan
:
We
shouldn’t
drive
the
car
today.
Mom
:
Why?
Su
Nan
:
Because
today
is
World
Car
Free
Day
.
It’s
time
do
something
for
our
earth.
Mom
:
I
see.
I
think
I
should
go
to
work
on
foot
today.
Su
Nan
:
Great,
Mom
!
Thank
you.
Mom
:
Some
more
soup
,
dear?
Su
Nan
:
Thanks
,
Mom.
But
I
have
no
time.
I
have
to
_______________.
Mom
:
Are
you
going
to
school
by
bike?
Why
not
go
in
your
dad’s
car?
Su
Nan
:
We
shouldn’t
____________
today
.
Mom
:
Why?
Su
Nan
:
Because
today
is___________________.
It’s
______do
something
for
our
earth
.
Mom
:
I
see
.
I
think
I
should
go
to
work
_______today.
Su
Nan
:
Great,
Mom
!
Thank
you.
Fill
the
blanks.
clean
my
bike
drive
the
car
World
Car
Free
Day
time
on
foot
Read
and
answer.
1.
When
is
World
Car
Free
Day
?
2.
Why
does
Su
Nan
stop
eating?
3.
Does
Su
Nan
will
go
to
school
in
his
father’s
car
?
why?
4.
How
will
mother
go
to
work?
September
22.
Because
he
has
to
clean
his
bike.
No,
he
doesn’t.
Because
it’s
World
Car
Free
Day.
On
foot.
I
have
to
clean
my
bike.
我必须去清洁我的自行车。
【句型剖析】
本句中have
to是情态动词，意为“必须；不得不”。其后要接动词原形，有人称、数和时态的变化。
【例句】I
have
to
go
to
school
on
Monday.
我星期一不得不去上学。
She
has
to
go
now.
她现在不得不走了。
have
to与must
have
to
不得不;必须
强调客观的需要，有人称、数和时态的变化。
must
必须
强调说话人主观上的看法。没有人称、数和
时态的变化。
2.Are
you
going
to
school
by
bike？
你打算骑自行车去学校吗？
【句型剖析】
本句是一般将来时态的一般疑问句。它的陈述句为：I
am
going
to
school
by
bike.我打算骑自行车去学校。主语+be
going
to+动词原形，表示“某人打算或将要做某事”，是一般将来时态的一种形式。一般将来时态还有另一种形式：主语+will+动词原形，表示“某人将要做某事”。
【例句】I
am
going
to
play
the
violin.
我打算拉小提琴。
I
will
go
to
Beijing
this
summer
holiday.
这个暑假，我将要去北京。
【练一练】
I
am
going
to
learn
English.(将句子变为一般疑问句)
____________________________________
Are
you
going
to
learn
English?
3.Why
not
go
in
your
dad’s
car?
为什么不坐你爸爸的车呢？
【句型剖析】
本句中“why
not+动词原形”这个结构经常用来表示向对方提出建议，也可用来反问，意为“何不/为什么不做某事呢?”。它的完整形式为“Why
don’t
you
do
sth.?”，本句中的why并不是用来询问原因的。
【例句】Why
not
go
boating
in
the
park?
为什么不去公园里划船呢?
【拓展】How
about+doing
sth.也是用来表示建议、提议的句型，但是how
about后面接动词的-ing形式。
【例句】How
about
going
swimming
in
the
pool?
在游泳池里游泳怎么样？
【练一练】Why
not
_____
to
play
in
spring?
A.
go
out
B.
going
out
C.
goes
out
4.I
think
I
should
go
to
work
on
foot
today.
我想我今天应该步行上班。
【句型剖析】
should是情态动词，意为“应该”，后面接动词原形，它的否定形式是shouldn’t，意为“不应该”。
【例句】We
should
be
nice
to
others.
我们应该对其他人友好。
We
shouldn’t
go
to
school
late.
我们不应该上学迟到。
In
a
Cottage
in
a
Wood
In
a
cottage
in
a
wood,
Little
man
by
the
window
stood,
He
saw
a
rabbit
hopping
by,
Knocking
at
the
door.
“Help
me!
Help
me!
Help
me!”
He
said,
“Before
the
hunter
shoots
me
dead.”
“Little
rabbit
,
come
to
me
,
happy
we
will
be.”
单项选择。
1.I
______clean
my
bike.
A.do
B.
have
C.
have
to
2.What’s
the
matter
_____
you?
A.
for
B.
with
C.
to
3.Are
you
going
to
school
_____bike?
A.
by
B.to
C.
take
4.Why
not______
in
your
dad’s
car?
A.
going
B.
go
C.
goes
5.We
shouldn’t
_______a
car
today.
A.
drives
B.to
drive
C.
drive
C
B
A
B
C
