Unit 4 Planting trees in good for us 课件（36张PPT，内嵌音频）

(共36张PPT)
Unit
4
Planting
trees
in
good
for
us
湘少版·六年级下册
Lead-in
New
words
植树节
空气
地方
It’s
spring
now.
Tree
Planting
Day
in
China
is
on
12th
March.
It’s
Trees
Planting
Day
today.
Planting
trees
is
good
for
us.
My
friends
and
I
enjoy
planting
trees.
Yes.
Planting
tress
is
fun.
I
like
to
plant
fruit
trees.
Trees
can
keep
the
air
clean.
Trees
can
keep
us
cool.
Trees
can
make
the
place
beautiful.
Language
points
1.
Tree
Planting
Day
in
China
is
on
12th
March.
中国的植树节是在3月12日。
在英语中，表达具体日期时，习惯把“日”放在“月”前在，日期用序数词表示。
例：六一儿童节是6月1号.
The
Children’s
Day
is
on
1st
June.
巧记:
年、月、季节前须用in，日期前面行不通；
遇到几号改用on，上午、下午、晚上仍用
in；若是某日上下午，也是用on才能行。
拓展:
表示时间的介词有三个：in,
on,
at.
in用于长的时间段；on用于具体的哪一天；
at用于具体的时刻前。
2.
Planting
trees
is
good
for
us.
种树对我们有益。
be
good
for意思是“对……有好处”，后面接人或事物。
例句：阅读对你的学习有好处。
Reading
is
good
for
your
study.
拓展：be
good后接不同的介词，可表达不同的意思。
be
good
at
意为“擅长……”，后接名词、代词或v-ing形式。
be
good
with意为“善于应付或与某人打交道”。
be
good
for意为“对……有好处”。
be
good
to意为“对……友好”，后接人。
3.
My
friends
and
I
enjoy
planting
trees.
我和我的朋友们喜欢植树。
enjoy表示“享受……的乐趣；喜欢”，后接动词-ing形式。另外，enjoy在表示“喜欢”时，可用like或love替换。
例句：我喜欢听音乐。
I
enjoyed
listening
to
music.
拓展：enjoy还可构成“enjoy+反身代词”结构，意为“玩得开心”。
4.
I
like
to
plant
fruit
trees.
我喜欢种植果树。
“like
+to
do”这个结构表示喜欢做某事，to后面接动词的原形。
例句：我喜欢打篮球。
I
like
to
play
basketball.
拓展：like
doing
sth.
也可以表示“喜欢做某事”。
5.
Trees
can
make
the
place
beautiful.
树木可以让这个地方变美丽。
make在此处作动词，意思是“使……”。常用结构为:make+形容词。
例句：锻炼可以使你健康。
Exercise
can
make
you
healthy.
Let’s
Learn
plant
trees
keep
the
air
clean
植树
保持空气清鲜
keep
us
cool
make
the
place
beautiful
保持我们凉爽
使这个地方很美丽
Let’s
Practise
Planting
trees
is
good
for
us.
We
should
plant
more
trees.
I
will
plant
trees.
I
like
trees
with
flowers.
I
will
water
the
young
trees
every
day.
We
should
look
after
them.
Soon
they
will
become
big
trees.
1.
I
will
plant
trees.我将种树。
例句：我明天将去买一本书。
I’ll
buy
a
book
tomorrow.
will+动词原形,表示将来的动作或状态。在一般将来时中,助动词will后必须接动词的原形。
Language
points
2.
I
will
water
the
young
trees
every
day.
我将每天给小树浇水。
此句中water是动词，是“浇水”的意思。
例句：每天给水浇水。
Water
the
flowers
every
day.
拓展：water可作名词，意为“水；水域”。
注意：water作名词“水”讲时，往往是不可数名词。
3.
We
should
look
after
them.
我们应该照顾它们。
look作为不及物动词，可以与介词after连用，表示“照顾”。
例句：我们应该照顾好自已。
We
should
look
after
ourselves.
拓展：look
after的同义短语是take
care
of
People
cut
down
trees!
Why
do
people
cut
down
trees?
Because
we
want
more
houses,
roads
and
buildings.
Farmers
also
need
more
land
to
grow
rice
and
vegetables.
But
the
weather
is
changing.
It’s
getting
hotter.
What
can
we
do?
We
need
to
plant
more
trees.
Trees
help
to
make
the
air
cool
and
fresh.
Let’s
plant
more
trees
to
make
the
Earth
clean
and
green.
Let’s
Read
Tick
√
,if
you
agree.
1.
We
want
more
houses
because
there
are
more
people.
2.
The
Earth
is
getting
hotter
and
hotter.
3.
People
cut
down
trees
to
make
more
roads.
4.
There
are
more
and
more
roads
because
there
are
more
and
more
cars.
5.
Farmers
need
the
land
to
grow
food.
People
need
to
eat
food.
6.
Trees
will
help
to
make
the
Earth
a
better
place.
√
√
√
√
√
√
1.
People
cut
down
trees!
人们砍倒树！
cut是
“砍；切”
的意思，与
down连用，意为
“砍倒”。
例句：他们把这棵大树砍倒了。
They
cut
down
the
big
tree.
拓展：cut
down还有“削减；缩短”的意思。
Language
points
2.
Why
do
people
cut
down
trees?
为什么人们砍倒树？
英语中，why和because是一对好朋友，两者往往一起出现，用在提问原因和回答的对话中。
例句：你为什么迟到了?因为我错过了公汽。
—Why
are
you
late?
—Because
I
missed
the
bus.
3.
Let’s
plant
more
trees
to
make
the
Earth
clean
and
green.
让我们来种更多的树,让地球变得干净,变绿吧。
这是一个以Let’s开头的祈使句，let型祈使句的结构为:
“Let’s+动词原形+其他”。
例句：让我们现在回家吧。
Let’s
go
home
now.
拓展：回答let’s句型，肯定回答可以是
“OK.”,
“Sure.”,
“Why
not?”等。
4.
The
Earth
is
getting
hotter
and
hotter.
地球正变得越来越热。
“形容词比较级+and+形容词比较级”表示“越来越……”。
例句：我们的生活正变得越来越美好。
Our
life
is
becoming
better
and
better.
拓展：“the+比较级…the+比较级…”意为“越……，越……”。
形容词和副词比较级
一、规则变化
1.
一般在词尾直接加er
例如，tall-taller,
long-longer
2.
以不发音的字母e结尾的单词在词尾直接加r
例如，nice-nicer
3.
以辅音字母+y结尾的词，把y变为i，再加er
例如，heavy-heavier
4.重读闭音节，末尾只有一个辅音字母，双写这个辅
音字母，再加er
例如，big-bigger
5.部分双音节词和多音节词分别在原级前加more构成
比较级
例如，slowly-more
slowly;
beautiful-more
beautiful
二、不规则变化
good
/well
→
better
bad/badly/ill
→
worse
old
→
older/elder
many/much
→
more
little
→
less
far
→
further/farther
Let’s
Write
Complete
the
table.
We
want
more
houses
because
there
are
more
people.
People
cut
down
trees
to
make
more
roads.
There
are
more
and
more
roads
because
there
are
more
and
more
cars.
Farmers
need
more
land
to
grow
food.
People
need
to
eat
food.
Why
do
people
cut
down
trees?
Trees
can
keep
the
air
clean.
Trees
can
make
the
place
beautiful.
Trees
help
to
make
the
air
cool
and
fresh.
Trees
make
the
Earth
clean
and
green.
Why
should
we
plant
more
trees?
Let’s
Have
Fun
What
can
you
see
in
the
trees?
A
bird
________
________
4.
________
5.
________
6.
________
A
monkey
An
ant
A
spider
An
insect
A
kite