人教版选修5 Unit 5 First aid Writing课件(19张PPT)

(共19张PPT)
如何写指导性说明文
说明文是以说明为主要表达方式对事物的状态、性质、功能等进行介绍，或是阐明事理，给人提供知识的一种文体。知识性、科学性是说明文的主要特点。指导性说明文属于说明事理类文体，它旨在为读者提供未知的知识和原
理，使读者阅读后对文章所写事物有所了解，或掌握解决问题的方法，是一种实用性很强的文体。
【写作指导】
1.
时态：说明文的时态常用一般现在时。
2.
语言：语言要准确、简洁、周密。语言风格可以生动活泼，也可以平实简明，但必须以准确为前提。
3.
结构：先对需要说明的对象作总的概括介绍，然后导入具体的说明，也就是在文章开头提出需要说明的事物或观点，然后加以列举说明，使文章表达清晰、条理清楚、层次分明。
【常用表达】
下列这些表达可以使你的说明更有条理：
First,
second,
third,
at
last
...
First,
next,
then,
finally
...
Firstly
/
First
of
all
/
To
begin
with,
...
Secondly,
....
Besides
/
In
addition,
...
Last
but
not
least
...
结尾常用表达：
We
can
draw
the
conclusion
that
...
In
short
/
In
brief
/
In
a
word,
...
It
seems
clear
that
...
We
can
know
/
learn
that
...
【实战演练】
假设你是李华，你们学校的英语网站正面向全校学生征集有关急救常识的英文稿件。请你给该网站投稿，介绍交通事故方面的急救常识。
内容包括：
1.
首先保持镇静；
2.
检查伤者呼吸情况，呼吸困难要实施人工呼吸；
3.
如伤者有出血情况要用布按压止血，然后等候救护车及警察的帮助。
注意：
1.
可以适当增加细节，以使行文连贯；
2.
词数不少于100。
【参考范文】
First
aid
for
accidents
If
we
happen
to
witness
an
accident,
what
should
we
do
to
save
other
people’s
lives?
Knowing
how
to
respond
properly
can
make
a
big
difference.
Here
are
some
rules
that
we
can
follow.
First,
we
should
stay
calm.
Next,
we
can
ask
simple
questions
such
as
“Are
you
OK?”
to
make
the
person’s
condition
clear.
Then,
we
need
to
check
the
person’s
breathing.
If
it
is
difficult
for
him
to
breathe,
we
should
try
to
start
his
breathing
right
away
with
the
mouth-to-mouth
method.
Also,
if
a
person
is
bleeding,
we
need
stop
the
bleeding
by
pressing
on
the
wound
with
a
clean
cloth.
All
the
above
done,
we
can
stay
with
the
person
until
the
police
and
ambulance
arrive.
通过学习这篇写作指导，你掌握指导性说明文的写作方法了吗？试着根据要求自己写一篇，然后与范文对照，找出其中的不足并加以改进。相信你的写作水平会越来越高！
Write
a
letter
to
your
principal
politely
asking
whether
he
or
she
could
organize
the
first
aid
courses.
Dear
___________,
Our
class
has
been
studying
a
unit
on
first
aid,
___________________________
_________________________
_________________________
__________.
Write
your
principal’s
name
Say
why
the
first
aid
unit
has
been
useful.
it
has
been
very
useful
because
we
have
learnt
about
what
to
do
to
help
someone
who
has
had
an
accident
Even
though
the
unit
has
been
very
interesting
and
useful,__________________________________________________________________________________________________________________________________________________________________________
___________________________________.
Say
why
you
would
like
a
first
aid
course.
we
would
like
to
be
able
to
do
a
first
aid
course.
A
first
aid
course
would
give
us
information
about
many
more
situations.
It
would
also
give
us
information
about
many
more
situations.
It
would
also
give
us
the
chance
to
practise
first
aid
treatments.
We
would
like
to
request
that____________________
_____________.
We
think
that
a
first
aid
course
at
the
school
____________________________________________________________________________________________________________________________
.
Yours
sincerely,
_____________
Say
what
you
want
the
principal
to
do.
Summarize
why
a
first
aid
course
would
be
a
good
thing
to
do.
Sign
your
names.
the
school
organizes
a
first
aid
course
is
a
necessary
part
of
our
education
and
will
make
us
more
useful
members
of
our
society.
Perhaps
we
will
even
save
someone’s
life
one
day
Dear
(your
principal’s
name),
Our
class
has
been
studying
a
unit
on
first
aid.
It
has
been
very
useful
because
we
have
learnt
about
what
to
do
to
help
someone
who
has
had
an
accident.
Sample
writing:
Even
though
the
unit
has
been
very
interesting
and
useful,
we
would
like
to
be
able
to
do
a
first
aid
course.
A
first
aid
course
would
give
us
information
about
many
more
situations.
It
would
also
give
us
the
chance
to
practise
first
aid
treatments.
We
would
like
to
request
that
the
school
organizes
a
first
aid
course.
We
think
that
a
first
aid
course
at
the
school
is
a
necessary
part
of
our
education
and
will
make
us
more
useful
members
of
our
society.
Perhaps
we
will
even
save
someone’s
life
one
day.
Yours
sincerely,
(Sign
your
names)