人教版新课标必修4 Unit 2working the land --using language poster -making(共42张PPT)

(共42张PPT)
Unit
2
Working
the
land
Using
language
Students
are
____________the
field（犁地）.
turning
over
The
farmer
is
sowing
________
in
the
soil.
seeds
They
are
removing
the
_______.
weeds
After
a
lot
of
farm
work,
finally,
we
can
get
the_______.
harvest
How
can
they
grow
so
well?
What
do
you
think
of
these
products?
fertilize
the
soil
fertile
soil
to
help
the
crops
grow
well
fertilizer
Students
are
carrying
the
_______
_____.
（天然粪便）
to
_________（施肥）
the
soil.
natural
waste
fertilize
natural
fertilizers
two
kinds
of
fertilizers
to
help
crops
grow
well
chemical
fertilizers
natural
fertilizers
chemical
farming
chemical
fertilizers
natural
fertilizers
Better？
organic
farming
Reading
Chemical
Or
Organic
Farming?
Part
2
Part
1
Para
1.
Para
2.
Para
3.
Para
4.
______
__________
used
to
be
common,
but
recently
scientists
have
discovered
its
harmful
effects.
Skim
the
text
and
then
complete
the
main
idea
of
each
paragraph.
People
begin
to
turn
to
_______
_________
There
are
some
_________
of
chemical
fertilizers.
Farmers
use
different
________
in
organic
farming.
organic
farming
Chemical
fertilizers
problems
Chemical
farming
organic
farming
methods
？
？
Divide
the
text
into
two
parts.
http://www.ppthi-hoo.com
.
Para
1.
1.
Why
are
chemical
fertilizers
so
popular
in
farming
today?
2.
After
the
long-term
use
of
chemical
fertilizers,
what
have
scientists
found?
TO
stop
crop
diseases
To
increase
production
The
long-term
use
of
fertilizer
can
_______
________
to
the
_______
and
people’s_______.
cause
damage
land
health
Chemical
farming
Para
2.
(problems)
Problems
Chemical
farming
1
damage_________
2.
stay
in
the
ground;
get
inside
the
crops;
___
____
in
people's
bodies;
lead
to
________and__________
3
fruit,
vegetables
and
other
food
grow
too
fast
to
be
full
of
________
the
land
cancer
other
illnesses
nutrition
Para
2.
build
up
Part
2
Part
1
Para
1.
Para
2.
Para
3.
Para
4.
Chemical
farming
organic
farming
Problems
solution
？
Organic
farming
is
simply
farming
without
using
any
chemicals.
What
is
organic
farming
?
Para
3.
How
is
organic
farming
performed?
methods
advantages
Para
3&4
Organic
farming
Methods
use
natural
waste
from
animals
as
fertilizer
make
the
soil______________
______________________
change
______________
____________________
put
________________
back
into
_______,
making
it
ready
for
other
crops
plant
different
crops
with
different
lengths
of
roots
Use
different
_________of
soil
plant
________________
and
then
leave
it
in
the
ground
prevent
wind
or
water
from
____________the
soil
and
become
a_____________
richer
in
minerals
and
so
more
fertile
the
kind
of
crop
in
each
field
every
few
years
important
minerals
the
soil
grass
between
crops
Advantages
Para
3&4
levels
carrying
away
natural
fertilizer
The
methods
to
keep
the
soil
fertile：
using
natural
waste
from
animals
as
fertilizer.
changing
the
kind
of
crop
in
each
field
.
planting
crops
to
use
different
levels
of
soil.
planting
grass
between
crops
to
prevent
…
The
same
goal:
________________________________
________________________________
to
grow
good
food
and
avoid
damaging
the
environment
or
people’s
health.
1
2
3
4
What’s
the
main
idea
of
the
passage?
The
passage
tells
us
___________of
chemical
farming
and
_______________of
organic
farming
the
problems
the
advantages
（过渡词）
first/first
of
all;
second/
In
addition
/what’s
more;
finally/last
but
not
least
,etc.
natural
please
tell
me:
1.
Is
it
chemical
or
organic
farming?
2.
How
do
you
know?
Situation
1:
Lao
Liu
is
using
farm
chemicals(农药）
to
keep
the
vegetable
free
from
pest.
Chemical
farming
Situation
2:
Lao
Wang
grows
soybeans
in
his
field
last
year
and
grows
corns
this
year.
organic
farming
Grow
different
crops
every
year.
Situation
3:
Lao
Li
throw
the
nitrogen
fertilizer(氮肥)
in
his
field
to
make
his
soil
rich
in
minerals.
Chemical
farming
Use
chemicals
Situation
4:
Li
Hua
only
use
natural
fertilizers
to
grow
his
cabbage.
That’s
why
his
cabbage
is
damaged
by
pests.
Organic
farming
chemical
farming
organic
farming
Better？
The
food
grown
in
organic
ways
is
called
green
food.
In
fact
The
benefits
of
eating
green
food
no
chemical
fertilizers
healthy/safe
delicious/tasty
full
of
nutrition's
(rich
in
vitamins/minerals)
….
Discussion
in
Group
of
4
Nowadays,
few
people
buy
Green
food
because
they
have
little
knowledge
about
the
benefits
of
eating
green
food.
However
make
a
poster
in
group
of
4
Suppose
you
are
a
farmer
who
has
grown
a
certain
kind
of
green
food
(like
watermelon,
strawberry,
cherry,
corn,
cucumber…),
and
now
design
a
poster
advertising
the
benefits
of
eating
green
food
to
encourage
people
to
buy
your
green
food.
How
to
make
a
poster?
title
content
conclusion
Make
your
own
poster.
Title:
Buy
my
Green
food--_______
Content:
list
the
benefits
Conclusion:
completeness（完整性）
Many
Reasons
Good
Conclusion
Creative
design
Beautiful
handwriting
….
Make
a
comment
on
the
poster
from:
Completeness（完整性）
Title
content
Conclusion
the
most
reasons
the
best
conclusion
the
most
ceative
design
the
most
beautiful
handwriting
Congratulations!
教材知识
整合及处理
1
fertilize
施肥
2
fertile
肥沃的
3
fertilizer
肥料
4
organic有机的
5
nutrition
营养
6
mineral
矿物质
New
words
（过渡词）
first/first
of
all;
second/
In
addition/what’s
more;
finally/last
but
not
least
,etc.
The
pattern
of
a
poster.
Title:
Content:
Conclusion: