(共31张PPT)
Unit
3
The
world
online
Welcome
to
the
unit
&
Reading
Lead
in
Lead-in
The
Internet
is
the
biggest
source
of
information
in
the
world
and
it’s
accessible
through
a
computer.
Presentation
I
hope
we
will
use
the
Net
to
cross
barriers
and
connect
cultures.
---
Tim
Berners-Lee
我希望我们能用互联网跨越障碍,
联结文化。
—
蒂姆·伯纳斯·李
1.
Do
you
have
easy
access
to
the
Internet?
2.
In
which
way
do
you
access
the
Internet,
using
a
mobile
device
or
other
devices?
3.
How
does
it
change
your
life
and
study?
该句出自英国计算机科学家蒂姆·伯纳斯·李。他是万维网(World
Wide
Web)的发明者。这句话体现了伯纳斯李对互联网的美好愿景。他希望互联网能发挥其互联互通的作用,
跨越各种障碍,
成为不同文化的纽带,
带来信息交流的全新模式。
Now,
let's
read
a
web
page
to
know
some
inventions.
We
use
Internet
everyday,
but
do
you
know
its
development
milestones
?
a
very
important
stage
or
event
in
the
development
of
sth.
Welcome
to
the
unit
The
first
email
was
sent
________
by
Ray
Tomlinson.
It
was
a
test
message
to
himself.
He
wanted
to
see
whether
he
could
______________
from
one
computer
to
another.
He
chose
______________
to
separate
the
username
from
the
name
of
his
machine.
in
1971
send
a
message
the
“@”
sign
Read
and
complete
The
first
webcam
was
created
by
computer
scientists
at
the
University
of
Cambridge
________.
What
did
it
film?
A
coffee
pot
_______
the
office.
These
scientists
used
the
webcam
to
see
______________
whether
the
pot
was
empty
to
avoid
wasted
trips
for
coffee.
in
1991
outside
from
their
desks
Emojis,
small
digital
images
used
to
_____________________
in
electronic
communication,
were
created
_______
in
Japan.
The
creator
was
inspired
by
Japanese
comics,
street
signs
and
_________________.
Soon
emojis
_______
throughout
the
world.
Oxford
Dictionaries
selected
,
the
“Face
with
Tears
of
Joy”
emoji,
as
the
Word
of
the
Year
2015.
express
ideas
or
feelings
in
1999
Chinese
characters
took
off
Discuss
the
following
questions
in
pairs.
1.
Which
of
the
above
inventions
do
you
use
most
frequently?
Why?
2.
What
other
facts
do
you
know
about
the
Internet?
Presentation
1.
Which
of
the
above
inventions
do
you
use
most
frequently?
Why?
I
use
emojis
most
frequently
when
I
message
my
friends.
They
look
cute,
and
are
a
quick
and
easy
way
to
express
how
I
am
feeling.
2.
What
other
facts
do
you
know
about
the
Internet?
The
term
“surfing
the
Internet”
was
first
popularized
in
print
by
Jean
Armour
Polly,
a
librarian,
in
1992.
In
2010,
Finland
became
the
first
country
to
make
Internet
access
a
legal
right.
Presentation
When
you
are
on
the
Internet,
what
do
you
usually
do?
Pre-reading
read
the
news
play
internet
games
watch
films
or
TV
plays
do
shopping
online
study
on
the
internet
search
for
information
chat
on
the
Internet
What
effects
do
you
think
the
internet
has
on
your
life?
The
Internet
makes
my
life:
less
stressful
more
colorful
convenient
easy
and
quick
much
busier
fulfilled
time-consuming
…
Language
points
Ok,
now
let’s
read
the
article
“The
Internet:
a
world
without
frontiers”.
Fast
reading
Read
for
the
structure
Read
the
article
and
complete
the
chart.
Introduction
Para.
1:
______________
______________
______________
Main
body
Paras.
2–4:
The
Internet
has
many
advantages.
Conclusion
Para.
5:
________________________
________________________
Advantage
1
____________________________________________________
Advantage
2
____________________________________________________
Advantage
3
_______________________________________
We
should
use
the
Internet
properly
and
responsibly.
We
have
quick
and
easy
access
to
a
huge
amount
of
information
online.
E-commerce
has
made
our
lives
unbelievably
convenient.
The
Internet
helps
us
establish
and
maintain
social
ties.
We
can
achieve
almost
anything
online.
Read
for
specific
information.
Advantages
Supporting
details
Advantage
1
?
Having
access
to
(1)
__________________
information
?
Gathering
information
quickly
and
easily
Advantage
2
?
(2)
_______________________________
?
Doing
shopping
quickly
and
easily
?
Ordering
a
taxi
with
an
app
?
Making
travel
arrangements
?
(3)
____________________________on
the
smartphone
Advantage
3
?
Keeping
in
contact
with
loved
ones
?
Finding
(4)____________________
?
Discovering
communities
who
(5)
__________________
a
huge
amount
of
Having
food
delivered
to
you
Paying
for
almost
everything
long-lost
friends
share
our
hobbies
Detailed
reading
1
5
4
2
3
aspects
access
to
information
6
7
food
shopping
travel
arrangements
transportation
payments
social
life
Compare
before
and
after
the
invention
of
the
Internet
You
can
talk
from
these
aspects.
Access
to
information
Compare
before
and
after
the
invention
of
the
Internet
before
after
Slow
and
inconvenient.
With
the
click
of
a
mouse
or
the
touch
of
a
button,
it
is
possible
to
find
out
almost
anything
we
care
to
know.
Food
Compare
before
and
after
the
invention
of
the
Internet
before
after
Go
to
the
restaurant
to
have
a
meal.
Have
food
delivered
to
us
by
using
food
delivery
apps
and
sites.
Transportation
Compare
before
and
after
the
invention
of
the
Internet
before
after
1.
Wait
hopelessly
for
a
taxi
in
the
cold
rain.
2.
(Queue
up
hopelessly
for
a
train/plane/bus
ticket.)
1.
Order
a
taxi
on
an
app,
sit
back
and
relax
in
doors
for
a
few
warm
minutes
until
the
driver
arrives.
2.
(Book
the
tickets
online.)
Shopping
Compare
before
and
after
the
invention
of
the
Internet
before
after
1.
Search
shop
after
shop
for
the
perfect
choice,
for
example,
a
pair
of
boots.
2.
Not
sure
of
the
price.
Compare
styles
and
prices
quickly
and
easily.
Travel
arrangements
before
after
Go
to
the
travel
agency
to
make
and
book
travel
plans.
Make
all
the
travel
arrangements
just
in
front
of
the
phone/computer.
Compare
before
and
after
the
invention
of
the
Internet
Payments
before
after
Pay
using
cash
or
cheques.
Almost
everything
can
be
paid
on
the
smartphone.
Compare
before
and
after
the
invention
of
the
Internet
Social
life
before
after
Physical
distance
often
gets
in
the
way
because
we
have
to
go
to
meet
up
with
someone
else
after
arranging
a
time
and
place
that
is
convenient
for
everyone.
There
are
endless
ways
to
share
our
views
or
let
someone
know
we
care
about
them
no
matter
where
we
are.
Compare
before
and
after
the
invention
of
the
Internet
1.
The
author
believes
that
the
Internet
has
benefited
us
in
various
ways.
Can
you
think
of
any
other
examples
to
support
the
author's
ideas?
2.
The
author
mentions
in
the
conclusion
that
the
Internet
has
its
problems.
What
do
you
think
the
problems
with
the
Internet
are?
Make
a
list
of
them.
1.
The
author
believes
that
the
Internet
has
benefited
us
in
various
ways.
Can
you
think
of
any
other
examples
to
support
the
author's
ideas?
?
Teachers
are
able
to
use
class
websites
or
apps
to
keep
parents
updated
about
school.
?
With
the
help
of
GPS
technology,
the
Internet
helps
map
and
direct
you
to
almost
every
place
in
the
world.
?
We
can
rent
bikes
using
mobile
apps
to
save
time
and
money.
?
We
can
share
photos
and
videos
with
loved
ones
in
the
cloud.
?
…
2.
The
author
mentions
in
the
conclusion
that
the
Internet
has
its
problems.
What
do
you
think
the
problems
with
the
Internet
are?
Make
a
list
of
them.
?
Surfing
and
playing
games
on
the
Internet
can
quickly
become
very
addictive.
?
Internet
viruses
can
infect
and
damage
computers.
?
Addiction
to
the
Internet
may
lead
to
social
isolation
and
depression.
?
…
?
Personal
information
may
be
stolen.
Consolidation
shared
to
advantages
to
find
majority
Consolidation
unbelievably
social
while
being
connected
a
Reading
Is
the
Internet
truly
a
world
without
frontiers?
Why?
How
do
you
think
we
can
use
the
Internet
properly
and
responsibly?
Choose
one
and
share
your
opinion.
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