必修二Unit 3 Computesr Reading 课件(39张PPT)

(共39张PPT)
高一必修
2
Unit
3
Computers
Reading
Heavy!
Difficult!
Hard!
Tired!
Easy!
Fast!
Free!
情景导入
Riddles
I
am
a
magical
machine.
I
can
do
many
things
for
people
,
such
as
calculating
,
playing
games
,
watching
pictures
,
sending
e-mails
and
so
on.
Who
am
I?
学习目标
1.
Learn
about
development
of
computer.
2.
Get
the
main
idea
of
the
passage.
3.
Understand
the
usage
of
computers
and
internet.
课前自主学习
1.Look
up
for
the
relevant
information
and
get
the
main
idea
of
the
passage.
2.
to
search
on
the
internet.
monitor
keyboard
mouse
speaker
modem
scanner
printer
USB
flash
disc
hard
disc
What’s
next?
The
development
of
computers?
Read
the
text
quickly.
1.
Who
am
I
?
A.
An
operator．
B.
Alan
Turing．
C.
A
computer．
D.
Human
race．
C
2.
What’s
the
passage
about?
The
text
mainly
tells
us
a
short
history
of
the
development
of
the
__________
and
its
____________
in
different
fields.?
computer
applications
新课讲解
Skimming
Find
out
the
topic
sentence
of
each
paragraph.
Read
the
passage
and
finish
the
timeline.
1642
1822
The
analytical
machine
was
made
by
Charles
Babbage.
The
computer
began
as
a
calculating
machine.
1940s
The
first
family
of
computers
was
connected
to
each
other.
The
computer
grew
rapidly
both
in
size
and
in
brainpower.
Computers
had
grown
as
large
as
a
room.
1960s
1936
1970s
now
Computers
were
used
in
offices
and
homes.
Computers
connect
people
all
over
the
world
together.
Read
the
passage
and
finish
the
timeline.
Read
the
passage
again
and
complete
the
chart
below.
Develop-
ment
Early
days
Name
Function
Poor
Strong
A
_________
machine
Simplify
difficult
sums
An
________
machine
Think
logically
and
produce
an
answer
quickly
A
_________
machine
Solve
difficult
____________
__________
calculating
analytical
universal
mathematical
problems
Development
Network
times
________
stored
in
Tubes
Large
Small
____________
Small
chips
__________
_____________
Narrow
Wide
Finance
________
Robots
Mobile
phones
_______________
Space
rockets
Medical
operations
Memory
Transistors
Applications
Communication
Trade
Topic
sentence
Supporting
details
Paragraph
1
Over
time
I
have
been
changed
quite
a
lot.
Calculating
machine
Analytical
machine
Universal
machine
PC
laptop
Read
the
passage
and
find
the
topic
sentence
and
details.
Topic
sentence
Supporting
details
Paragraph
2
These
changes
only
became
possible
as
my
memory
improved.
tubes
transistors
chips
network
World
Wide
Web
Topic
sentence
Supporting
details
Paragraph
3
Since
the
1970s
many
new
applications
have
been
found
for
me.
＊
communications
＊finance
＊
trade
＊robots
＊
mobile
phones
＊
medical
operations
＊
space
rockets
＊
providing
a
life
of
high
quality
新课讲解
Detailed
reading
新课讲解
Detailed
reading
新课讲解
Detailed
reading
新课讲解
Detailed
reading
新课讲解
Detailed
reading
Read
paragraph
2
and
find
out
the
changes.
新课讲解
Detailed
reading
Read
paragraph3
and
find
out
the
details.
Paragraph
1
Topic
sentence
Over
time
I
have
been
changed
quite
a
lot.
details
Calculating
machine
,
analytical
machine,
Universal
machine,
PC,
laptop
新课讲解
Paragraph
2
Topic
sentence
These
change
only
became
possible
as
my
memory
improved.
Details
Tubes,
Transistors,
Chips,
Network,
World
Wide
Web
新课讲解
Paragraph
3
Topic
sentence
Since
1970s
many
new
applications
have
been
found
for
me.
Details
communications,
Finance,
Trade,
Robots,
Mobile
phones,
Medical
operations,
Space
rockets,
Providing
a
life
of
high
quality
新课讲解
新课讲解
Post
reading
Read
the
passage
carefully
and
then
fill
in
the
blanks?
Summary
of
the
passage.
I
began
as
a
__________
machine
in
1642.
It
took
nearly
two
hundred
years
________
I
was
built
as
an
analytical
machine.
I
became
a
“universal
machine”
in
1936
to
________
any
mathematical
problem.
I
was
very
big
at
one
time.
calculating
before
solve
However,
as
time
_______
by,
I
was
made
smaller
and
smaller.
I
was
given
a
family
__________
by
a
network
in
the
early
1960s.
I
was
able
to
_______
my
knowledge
with
others
__________
the
World
Wide
Web.
went
connected
share
through
I
have
been
widely
used
in
many
fields,
such
as
in
communication,
_________
trade
and
medical
__________
.
I
have
also
been
put
into
robots
and
space
rockets
to
________
the
Moon
and
Mars.
I’m
glad
I
am
a
devoted
friend
and
helper
of
the
human
race.
finance
operations
explore
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?
课堂活动
Group
discussion
How
do
we
use
computers
in
daily
life?