Unit
2
Saving
the
Earth,
Topic
1,
Section
B教学设计
I.
Teaching
aims:
1.
Language
aims:
A)
Learn
and
master
the
new
words
“breathe”,
“pain”,
“produce”,
“awful”,
“bear”,
“harmful”
and
the
phrases
“get
a
pain
in”
and
“be
harmful
to”.
Understand
the
new
word
“chest”.
B)
Continue
learning
the
present
perfect
tense.
2.
Skill
aims:
A)
Can
use
the
present
perfect
tense
to
describe
the
causes
of
air
pollution,
noise
pollution
and
water
pollution.
B)
Know
about
the
harms
of
pollution
and
can
give
suggestions
to
reduce
it.
3.
Emotion:
Enhance
the
students’
awareness
of
protecting
the
environment.
II.
Important
and
difficult
points:
Use
the
present
perfect
tense
to
describe
the
causes
of
air
pollution,
noise
pollution
and
water
pollution.
III.
Aids:
multiple
media,
blackboard
and
chalks.
Procedure:
Step
1
Greeting.
Step
2
Pre-listening.
1.
Have
a
free
talk.
Compare
the
beauty
of
Sanya
with
the
environment
of
some
big
cities.
Lead
in
the
topic
of
pollution
and
learn
the
new
word
“breathe”.
2.
Show
pictures
and
discuss
about
the
causes
of
the
air
pollution,
water
pollution
and
noise
pollution
in
some
big
cities
by
using
the
present
perfect.
Learn
the
new
word
“produce”.
3.
Talk
about
the
effects
of
the
pollution
to
our
human
being.
Learn
the
new
words
“harmful”,
“pain”,
“cancer”,
“awful”
and
the
phrases
“be
harmful
to”
and
“get
a
pain
in”.
4.
Observe
the
picture
in
1a
and
get
ready
for
listening.
Step
3
While-listening
Task
1
Listen
to
1a
and
choose
the
best
answers
to
the
question.
Know
something
about
Mrs.
Zhou’s
problems.
Task
2
Listen
again
and
tick
Mrs.
Zhou’s
other
problems.
Know
more
about
them.
Task
3
Listen
for
the
third
time
and
complete
the
table.
Know
about
the
causes
of
Mrs.
Zhou’s
problems.
Step
4
Post-listening
1.
Read
1a
freely
after
the
tape.
Try
to
find
out
more
problems
caused
by
pollution.
2.
Retell
things
about
Mrs.
Zhou’s
problems
and
causes
of
them.
3.
Have
a
discussion
about
the
pollution
in
our
hometown
and
its
effects
to
our
life.
4.
Group
work.
Discuss
in
groups
about
what
to
do
to
reduce
pollution
in
our
daily
life.
Step
5
Summary
Conclude
the
main
points
of
this
period.
Step
6
Homework
Make
a
poster
about
air
pollution,
water
pollution,
noise
pollution
or
litter
pollution,
to
call
on
more
people
to
protect
our
hometown.
Your
poster
needs
to
contain
the
things
below:
1.
The
harms
of
the
pollution
to
humans
and
animals.
2.
The
things
we
can
do
to
reduce
it.
the
chemical
factory
water
pollution
noise
pollution
The
fish
are
dead.
Problems…
…
…
Blackboard-writing: