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Module4
第
4
课时教案
多维教学目标：
Language
objectives:
To enable the students to
learn about the structure of a typical paragraph,
what is a
topic sentence and how to
develop a paragraph..
Skill objectives:
To enable the students to write a
passage containing a topic sentence.
To
enable the students to have ability to enjoy the
process of writing.
To develop the
students’
capability and awareness of
co-operation and competition
in their
study by pair work or group work.
教学重点：
To enable
the students to write a passage containing a topic
sentence.
Teaching procedures:
PWP
Teaching Model
Step1. Pre-writing
First
I
’
ll present a typical
paragraph on the screen and analyze it, pointing
out the
structure of the paragraph. And
then define the topic sentence.
We all
know that cigarette smoking is a dangerous habit
because it causes health
problems
．
Doctors
say it can be a direct cause of cancer of the
lungs and throat and
can also
contribute to cancer of other organs. In addition,
it can bring about other
health
problems
such
as
heart
and
lung
diseases.
It
is
clearly
known
as
one
of
the
chief causes of death in our
society
．
The
topic
sentence(
主题句
):
We
all
know
that
cigarette
smoking
is
a
dangerous
habit
，
because it
causes health problems
．
Supporting
sentences(
拓展句
): 1) Doctors
say it can be a direct cause of cancer of
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the
lungs and throat and can also contribute to cancer
of other organs.
2)
In
addition,
it
can
bring
about
other
health
problems
such
as
heart
and
lung
diseases.
The concluding
sentence(
结论句
): It is clearly
known as one of the chief causes of
death in our
society
．
段落中的主题句（
topic sentence
）是全段的统领，它说明段落的中心思想和作
者写作的目的。
段落的其余句子必须与主题句密切相关，
共同阐明、
证
实主题句。
因此，主题句具有概括性，支配段落中其他各句的走句。有时，段落中没有结
论
句。
Step2. While-
writing
⑴
After making sure
students know what a topic sentence is, what the
structure of
a paragraph is,
I
’
ll let them in pairs
identify the topic sentences in paragraphs on the
students
learning
plan.
Meanwhile,
remind
students
that
sometimes
topic
sentences
lies at the end of a paragraph, or even
in the middle of a paragraph.
Exercise
One:
Read the following paragraphs and
underline the topic sentence.
1)But no
matter what it is called, all polyester has
certain good points. It does not
wrinkle easily. It dries quickly after
it is washed. It holds its shape. It is strong and
keeps its colors well.
2)Names
usually
have
origins,
especially
for
Indians.
Indians
with
distinctive
physical characteristics, might be
given names such as Big Foot or Crooked Leg. If
there had been a big storm on the day
of a baby’s birth, the baby might have been
named
Thundercloud.
Grey
Eagle,
Red-
Dog,
Big
Bear,
and
Spotted
Wolf
are
examples of Indian names
after animals.
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3) Electric products are closely
connected with our lives. Electric alarm clocks
and
music
pouring
from
our
radio
awaken
us;
we
brush
our
teeth
with
an
electric
toothbrush,
and
sh
ave
with
an
electric
razor.
We
read
today’s
headlines
from
newspapers printed on
huge electric presses, and we write a letter on
our electric
typewriter before leaving
for work to operate a computer and word processor.
4)
Suppose
you
’
re
playing
a
game.
You
make
a
silly
mistake
and
lose.
Do
you
become
angry
？
Or
can
you
laugh
at
yourself
and
hope
to
do
better
next
time
？
Suppose you are at a special dinner.
You accidentally spill some food. Why keep
worrying
about
how
clumsy
you
look
？
Why
not
laugh
it
off
and
enjoy
yourself
anyway
？
If you
can, it
’
s good sign
you
’
ve really grown
up
．
Exercise Two:
Read the following paragraph carefully
and select the best topic sentence from the
four possible answers that follow the
paragraph.
1)Topic
sentence:_____________________________________
I
love
sunny
days
because
they
are
ideal
for
outings.
I
remember
the
sunny
weekend when two
roommates and I had a marvelous time in the old
Summer Palace.
Under the blue sky, the
trees are bathed in golden light. On rainy days,
I enjoy the
sound of
raindrops beating on the windowpanes.
I
watch the rain
washing the trees
and grass clean, knowing they will
glitter when it clears up and hoping a rainbow
will
follow. In winter, a heavy
snowfall offers a different type of pleasure. Cold
as it often
is,
I
always
go
outdoors
and
leave
my
footprints
in
the
thick
snow
while
throwing
snowballs and
making snowmen with my fellow students.
A. A person should learn to
be happy in all weathers.
B. One’s mood should not be affected by
bad weather.
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