人教版高中英语必修四unit2 Working the land period3 extensive reading教案

人教版高中英语必修四
Unit
2
Working
the
land
Period
3　Extensive
Reading教案
The
General
Idea
of
This
Period
This
period
is
about
the
reading
of
the
passages:Organic
farming.It
can
help
the
students
learn
something
more
about
the
modern
agriculture.?
Teaching
Important
Points?
Help
the
students
to
understand
the
passages
and
realize
the
importance
of
organic
farming.
Teaching
Difficulties?
How
to
improve
the
students’
reading
ability.?
How
to
help
the
students
understand
the
advantages
of
organic
farming.?
Teaching
Methods?
Asking-and-answering
activity
to
check
the
students’
understanding
of
the
text;individual,pair
or
group
work
to
finish
each
task.?
Teaching
Aids?
A
tape
recorder?
A
multi-media
computer
and
a
blackboard?
Three
Dimensional
Teaching
Aims
Knowledge
and
Skills?
Train
the
students’
reading
ability.?
Learn
some
useful
words
and
drill.?
Enable
the
students
to
know
the
differences
between
organic
farming
and
chemical
farming.?
Process
and
Strategies?
Pair
work
to
talk
about
the
advantages
of
organic
farming.?
Individual
work
to
finish
each
task.?
Feelings
and
Value?
Through
the
reading
of
this
passage
the
students
may
have
a
better
understanding
of
the
advantages
of
organic
farming.It
is
important
as
people
are
more
and
more
concerned
about
the
quality
of
the
food
we
eat.?
Teaching
Procedures?
Step
1
Warming
up
?
1.Greetings?
2.Check
the
answers
of
the
exercises
about
the
-ing
form
as
the
subject
and
object.
Step
2
Reading
for
structure?
T:In
the
Reading
part
we
learnt
something
about
planting
rice,but
do
you
know
what
is
the
best
way
to
plant
rice??
Ss:...?
T:Today
we’ll
learn
a
passage
about
organic
farming.Now
please
read
the
text
and
try
to
find
out
the
main
idea
of
each
paragraph.I’ll
give
you
five
minutes.?
(
five
minutes
later
)?
T:Who
would
like
to
tell
me
the
main
idea
of
Paragraph
One??
S:It’s
“What
is
‘organic
farming’?”?
T:That’s
right.How
about
Paragraph
Two??
S:The
main
idea
is
“The
fertilizer
that
organic
farmers
prefer
is
natural
waste
from
animals”.?
T:Thank
you
for
your
good
answers.Let’s
come
to
the
next
paragraph.?
S:The
main
idea
for
the
last
paragraph
is
“Organic
farmers
change
crops
every
two
or
three
years”.?
T:Every
one
has
done
a
good
job,I
hope
everyone
got
all
the
answers
by
yourself.
Step
3
Reading
for
details?
T:Now
please
read
the
passage
again,and
try
to
find
all
the
answers
for
the
following
questions:?
1.What
is
organic
farming??2.What
problems
are
caused
by
using
chemical
fertilizers??3.Why
do
organic
farmers
grow
peas
or
soybeans
after
corn
or
wheat??
T:Finish?Any
one
gets
the
answer
for
the
questions??
Suggested
answers:?
1.Organic
farming
means
growing
crops
without
chemical
fertilizers.?
2.There
are
three
problems.First,chemical
fertilizers
affect
the
soil
and
the
water
supply
badly.Second,they
allow
farmers
to
grow
the
same
crop
year
after
year
and
exhaust
the
soil.Third,they
kill
both
helpful
and
harmful
pests.?
3.Farmers
grow
peas
or
soybeans
after
corn
or
wheat
so
that
peas
and
beans
can
put
minerals
back
into
the
soil,making
it
rich
and
healthy
and
ready
to
grow
more
wheat
or
corn.
Step
4
Extensive
Reading?
T:Please
read
the
text
for
the
third
time,then
fill
in
the
following
table.?
(Five
minutes
later
the
teacher
check
the
answers
one
by
one.)?
Advantages
of
organic
farming
Reason
1.Farmers
use
natural
waste
from
animals.
1.This
makes
the
soil
richer
in
minerals
and
so
more
fertile.
2.The
soil
is
not
exhausted.
2.Peas
and
soybeans
renew
the
minerals
in
the
soil
and
it
becomes
rich
and
healthy.
3.They
use
the
soil
to
best
advantage.
3.They
plant
crops
that
need
surface
soil
and
next
crops
that
grow
at
a
deeper
level.So
the
wind
and
water
doesn’t
carry
away
the
soil.All
the
richness
of
the
soil
is
used.
Step
5
Retelling?
T:Now
please
retell
the
text
according
to
the
following
chart,you
can
discuss
in
groups.Organic
farming?
1.Crops
growing
with
natural
fertilizers.?
2.Farmers
prefer
natural
waste
from
animals.?
①make...richer
and
more
fertile　　①leaving...is
not
good?②reduce...and
help...strong　　　②grow...year
after
year?③the
fertilizers
kill...and
healthy?④keep
free...from
chemicals?
(Three
minutes
later,the
teacher
ask
some
students
to
have
a
try)
Step
6
Language
points?
Teacher
explains
the
important
words
and
expressions
from
the
reading.Try
to
use
as
many
examples
as
possible
to
illustrate
the
point.After
illustration,teacher
can
give
students
some
exercise
to
consolidate
their
understanding.?
Step
7
Summary
and
Homework?
T:Today
we
learned
a
passage
about
organic
farming.If
you
are
interested
in
it,you
may
find
more
information
about
it
on
the
Internet
after
class.What’s
more,you
should
finish
your
workbook
exercises.So
much
for
today!?
The
Design
of
the
Writing
on
the
Blackboard
Unit
3
Working
the
landPeriod
3　Extensive
reading1.reduce　v.make
sth.smaller
in
size,number,degree,price,etc.?e.g.The
company
tries
to
increase
profits
by
reducing
costs.?We
have
reduced
expenses
this
year.?2.supply　v.give
sb.sth.that
is
needed
or
useful?e.g.He
kept
me
well
supplied
with
cups
of
coffee
while
I
wrote
the
report.?The
shop
was
unable
to
supply
what
she
wanted.?3.refer
to　v.mention
or
speak
of
sb./sth.?e.g.When
I
said
some
people
were
very
stupid,I
wasn’t
referring
to
you.?Don’t
refer
to
this
matter
again.?
Record
after
Teaching
Activities
and
Research
The
teacher
may
encourage
the
students
who
are
interested
in
organic
farming
to
find
more
information
about
it
and
share
it
with
other
students
in
class.?
Reference
for
Teaching
Language
Points?
1.reduce
v.make
sth.smaller
in
size,number,degree,price,etc.?
e.g.The
company
tries
to
increase
profits
by
reducing
costs?
公司尽力通过减少花销来提高利润。?
We
have
reduced
expenses
this
year.?
今年我们已经减少了业务开支。　　
2.supply
v.give
sb.sth.that
is
needed
or
useful?
e.g.He
kept
me
well
supplied
with
cups
of
coffee
while
I
wrote
the
report.?
当我写报告时,他不断地给我提供咖啡。?
The
shop
was
unable
to
supply
what
she
wanted.?
在这家商店她买不到她所想买的东西。
3.refer
to
v.mention
or
speak
of
sb./sth.?
e.g.When
I
said
some
people
were
very
stupid,I
wasn’t
referring
to
you.?
当我说有些人是很愚蠢的时候,我不是说你。?
Don’t
refer
to
this
matter
again.?
别再提这件事了。?
Sentences
and
structures?
Find
out
all
the
sentences
with
“
v.+ing”
forms,and
try
to
remember
them.?
Translate
the
following
sentences,and
tell
what
part
of
speeches
the
red
parts
are
used
as.?
1.它也指用自然肥料而不是化肥种植的庄稼。?
It
also
refers
to
crops
growing
with
natural
rather
than
chemical
fertilizers.?
注:growing...在句中充当定语。修饰crops。
2.他们说,把这种肥料施在农田里会使土壤含有更丰富的矿物质,而（土壤）也会更加肥沃。?
Putting
this
in
their
fields,they
argue,makes
the
soil
richer
in
minerals
and
so
more
fertile.?
注:Putting...在句中充当状语。?
3.这一点很重要,因为土壤改良了,农作物的病虫害就减少了,因而有助于农作物的茁壮成长。?
This
is
important
because
developing
a
healthy
soil
reduces
diseases
in
crops
and
helps
them
grow
strong
and
healthy.?
注:developing...在句中充当主语。
4.然而使用化肥会带来很大的问题。?
However,using
chemical
fertilizers
is
a
big
problem.
5.第一,在田地里长期遗留化学物质对土壤和水源不利。?
Firstly,leaving
chemicals
in
the
ground
for
a
long
time
is
not
good
for
the
soil
or
the
water
supply.?
注:leaving...在句中充当主语。
6.不同的是,有机耕作的农民们坚持每隔两三年换种农作物。?
Instead,organic
farming
insist
on
changing
crops
every
two
or
three
year.?
注:changing...在句中充当宾语。
7.这些农作物将矿物质带回土壤,使之肥沃强效,适宜于种植要求土壤肥沃的农作物,例如玉米和小麦。?
These
put
the
minerals
back
into
the
soil,making
it
rich
and
healthy
and
ready
to
grow
crops
that
need
rich
and
fertile
soil
like
corn
or
wheat.?
注:making...在句中充当状语。
8.但无论他们种什么,他们确保在收割后留在地里的东西成为来年农作物的天然肥料。?
But
whatever
they
grow
they
make
sure
that
what
is
left
in
the
ground
after
harvesting
becomes
a
natural
fertilizer
for
the
next
year’s
crops.?
注:harvesting...在句中跟after一起充当时间状语。?