资源简介

(共12张PPT)
Unit
3
The
Internet
—Grammar
学习目标(1’)
1.
Identify
and
summarize
the
form
and
the
functions
of
the
present
perfect
passive
voice;
2.
Compare
the
present
perfect
passive
voice
with
the
active,
and
change
the
active
form
into
the
passive
form;
3.
Apply
the
present
perfect
passive
voice
into
use
1.
Much
has
been
written
about
the
wonders
of
the
World
Wide
Web.
问题导学1(1’)
Observe
and
translate
the
following
sentences,
and
try
to
find
something
in
common
from
these
sentences.
2.
People’s
lives
have
been
changed
by
online
communities
and
social
networks.
问题导学1(3’)
3.
Many
people
have
been
helped
by
the
club.
…已经被书写
…已经被改变
have/
has
been
done
…已经被做
表示
“某人/某事/某物已经被…”
…已经被帮助
has
been
written
have
been
changed
have
been
helped
问题导学1(1’)
点拨精讲1(3’)
Observe
and
translate
the
following
sentences,
and
find
the
differences
among
“have/has
done”
and
“have/has
been
done”.
have/
has
done
have/
has
been
done
主语和动作之间是主动关系
主语和动作之间是被动关系
1.
A
woman
has
started
a
small
online
company
with
two
friends.
1.
A
small
online
company
has
been
started
by
a
woman
with
two
friends.
2.
The
internet
has
made
our
lives
more
convenient.
2.
Our
lives
has
been
made
more
convenient
by
the
Internet.
…已经开始
…已经被开始
…已经使
…已经被使
has
started
has
been
started
has
made
has
been
made
即学即练
1.
I
have
asked
her
to
help
you.
将下列主动句变为被动句
2.
They
have
found
a
good
place
to
build
a
library
in
the
city.
3.
We
have
planted
many
trees
on
the
hill
in
the
last
two
years.
She
has
been
asked
by
me
to
help
you.
A
good
place
has
been
found
by
them
to
build
a
library
in
the
city.
Many
trees
have
been
planted
by
us
on
the
hill
in
the
last
two
years.
问题导学2(4’)
The
letter
(post)
already.
Observe
the
following
sentences
and
try
to
fill
in
the
blanks.
has
been
posted
Many
houses
(build)
for
the
poor
so
far.
have
been
built
点拨精讲2(4’)
用法1:被动动作发生在过去,已经完成,
对现在造成影响
或产生结果。(already,
yet,
so
far,
by
now)
问题导学2(4’)
The
machine
(repair)
for
two
hours
but
it
still
doesn’t
work.
has
been
repaired
Paper
money
(use)
for
over
50
years.
has
been
used
点拨精讲2(4’)
用法2:被动动作发生在过去,持续到现在,并有可能继续
持续下去。(for+一段时间;
since)
Everyone
will
feel
extremely
delighted
if
he________________(admit)
to
South
China
Normal
University.
You
shouldn’t
leave
school
before
your
homework_______________(finish).
has
been
admitted
has
been
finished
用法3:在时间/条件状语从句中表示可能
还没有发生的被动动作。
点拨精讲2(10’)
1.
The
machine
has
been
repaired
already.
2.
The
machine
is
being
repaired
now.
3.
The
machine
was
repaired
yesterday.
说明动作发生在过去,对现在有影响,
“现在修好了”
说明动作正在进行
只说明动作发生在过去
4.
The
baby
has
been
taken
good
care
of.
4.
The
baby
has
been
taken
good
care.
Attention:
在被动结构中,
动词短语的介词或副词不可去掉
5.
Great
changes
have
been
taken
place
since
1978.
5.
Great
changes
have
taken
place
since
1978.
Attention:
不及物动词或词组无被动
即学即练
1.More
than
5000
used
bikes
(collect)
since
the
two
brothers
set
up
the
organization.
2.
He
(employ)
at
this
job
since
1990.
3.
His
novel
(translate)
into
25
languages.
have
been
collected
has
been
employed
has
been
translated
课堂小结(1’)
现在完成时的被动语态
含义
结构
表示过去发生的被动动作现在已经完
成或仍将持续,
强调对现在的影响
have/has
been
done
形式
肯定式
否定式
疑问式
have/has
been
done
have/has
not
been
done
Have/Has+主语+been
done
特殊疑问词+have/has+主语+been
done
用法
表示已经完成的被动动作
表示开始于过去并可能持续下去的被动动作
在时间状从,条件状从中,表示还未发生的被动动作
注意事项
区分have/has
been
done/
be
being
done/
be
done
不及物动词或词组无被动
当堂检测(15’)
Great
changes1.__________(take)
place
in
my
hometown
in
the
past
few
decades.
The
public
facilities(设施)
2._________________(improve)
so
far.
Many
3.______(road)
have
been
widen.
Besides,
More
attention
has
been
given
to
the
4._____________(environment)
protection,
so
many
trees
and
flowers
5._______________(plant)
now.
The
water
in
the
rivers
as
well
as
the
air
6.___________(become)
clean
again.
7._____
many
people
say,
8.___
seems
that
we
are
now
living
in
a
“big
park”.
9._________,
things
can
get
bad
if
we
don’t
appreciate
10.______we
have
now.
have
taken
have
been
improved
roads
environmental
are
being
planted
has
become
As
It
However
what

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