人教新课标高中英语必修二 Unit 3 computers reading课件 （共23张PPT）

(共23张PPT)
The
technology
develops
so
quickly
that
many
new
things
appear
in
human
being’s
life.
Let’s
guess
what
they
are:
Car
1.
I
am
a
machine
which
moves
very
fast
on
four
wheels.
You
must
be
very
careful
when
you
drive
me..
Who
am
I?
washing
machine
2.I
wash
clothes
for
people.
Who
am
I?
3.I
am
very
small.
I
can
be
used
for
calculating.
In
China,
a
lot
of
students
use
me
when
solving
mathematical
problems.
calculator
computer
4.I
am
a
machine,
which
you
can
use
to
play
games,watch
movies,listen
to
music,communicate
with
your
friends,gather
informations………
mouse
monitor
speaker
keyboard
What
do
you
know
about
computers?
Do
you
know
the
history
of
computers
?
modem
scanner
printer
USB
flash
disc
hard
disc
analytical
machine
calculating
machine
laptop
universal
machine
robot
1
2
3
4
5
6
Predict:
try
to
put
them
in
order
1.Who
is
the
speaker?
2.
What
is
the
main
idea
of
the
whole
passage?
A.
The
early
development
of
the
computer.
B.
The
late
development
of
the
computer.
C.
The
importance
of
the
computer.
D.
The
development
of
the
computer.
3.
In
what
order
is
this
passage
arranged?(安排）
Time.
It
is
a
computer.
Attentions:
underline
the
time
in
the
text
Skimming
Over
time
I
have
changed
a
lot.
These
changes
only
became
possible
As
my
memory
improved.
Since
the
1970s
many
new
applications
have
been
found
for
me.
Find
out
the
topic
sentence
of
each
paragraph
Attentions:
you
should
pay
more
attention
to
the
beginning
or
the
end
of
the
paragraph
to
find
out
the
topic
sentences
True
or
false
(Para.2)
1.First
my
memory
stored
in
tubes,then
on
very
small
chips
and
later
on
transistors.
then
on
transistors
and
later
on
small
chips
2.
As
time
went
by,
I
was
made
bigger.
3.
In
the
1960s
the
first
family
of
computers
was
connected
to
each
other.
4.Computers
could
share
information
and
express
their
feelings.
but
couldn’t
Para
3:
Communication
/
finance/
trade
/robots
mobile
phones
/medical
operations
/space
rockets
providing
a
life
of
high
quality
What
applications
are
mentioned
in
Para
3?
calculating
analytical
universal
mathematical
problems
Development
Early
days
Name
Function
Poor
Strong
A
_________
machine
Simplify
difficult
sums
An
________
machine
Think
logically
and
produce
an
answer
quickly
A
_________
machine
Solve
difficult
____________
__________
Medical
operations
Memory
Transistors
Applications
Communication
Trade
Development
Network
times
________
stored
in
Tubes
Large
Small
____________
Small
chips
__________
_____________
Narrow
Wide
Finance
________
Robots
Mobile
phones
_______________
Space
rockets
Summary
I
began
as
a
_______
machine
in
1642
in
France.
In
1822
I
was
built
as
an
_______
machine.
Then
in
1936
Alan
Turing
wrote
a
book
and
built
a
______
machine.
As
the
years
have___
___
,
I
have
been
made
______
.
There
were
times
when
my
size
totally
______
.
And
my
memory
became
so
_____
l
that
I
couldn’t
believe
it.
In
the
1960s
they
gave
me
a
family_________
by
a
network.
I
was
able
to
_________________with
others
through
the
World
Wide
Web.
Since
the
1970s
many
new
applications
______________
for
me.
calculating
analytical
universal
gone
by
smaller
connected
have
been
found
share
my
knowledge
large
changed
Review
Questionnaire(问卷调查）
How
do
you
use
computers
and
the
Internet?
Yes
No
I
often
use
a
computer
to…,
I
sometimes
use
it
to…,
and
I
never
use
it
to…
1.Help
to
do
homework
2.Play
computer
games
3.Send
e-mails
4.Listen
to
music
5.See
movies
6.Chat
(聊天)
7.Search
for
information
8.Do
shopping
9.Learn
computer
skills
Should
high
school
students
surf
the
internet(上网)?
I
think
we
high
school
students
should
surf
the
internet
because…(first,
second,
third)
I
don’t
agree
with
you.
In
my
opinion,
it
is
bad
for
students
to…
The
reason
is
that…
I
agree
with
you.
I
think
we
can
also…
Should
high
school
students
surf
the
Internet?
The
reporter
will
interview
some
students
and
teachers
about
the
issue.
With
the
development
of
computer
technology,
the
internet
has
become
more
and
more
popular
among
students.
However,
just
as
a
saying
goes,
a
coin
has
two
sides.
The
internet
brings
both
advantages
and
disadvantages
to
students.
Advantages
Communicate
with
friends
listen
to
the
music
see
films
&
watch
news
play
games
do
shopping
save
a
lot
of
time
do
a
lot
of
useful
things
Disadvantages
Some
people
especially
the
teenagers
abandon
(沉迷于)
themselves
to
the
computer
games
and
chatting
on
the
Internet.
As
a
result,
they
have
little
time
to
study
.
Some
people
use
the
computer
wrongly
Conclusion
There
is
no
doubt
that
computer
has
two
sides
,too.
If
we
make
good
use
of
it,
it
will
make
our
lives
more
colorful
and
convenient.
But
don’t
lose
yourself
in
playing
computers.
Just
remember:
Keep
fit,
study
well
and
work
hard.
Homework
1.Do
the
writing:
Should
high
school
students
surf
the
Internet?
2.Deal
with
the
language
points
in
the
text
using
reference
books
or
dictionaries.