Unit 7 Teenagers should be allowed to choose their own clothes. SectionA （Grammar Focus - 4c）课件（27张P

(共27张PPT)
Unit
7
Teenagers
should
be
allowed
to
choose
their
own
clothes.
Section
A
Grammar
Focus
Grammar
Focus
I
don’t
think
sixteen-year-olds
should
be
allowed
to
drive.
Do
you
think
teenagers
should
be
encouraged
to
make
their
own
decisions?
Teenagers
should
not
be
allowed
to
have
part-time
jobs.
Do
you
think
we
may
be
allowed
to
take
photos
if
we
don’t
use
a
flash?
I
agree.
They
aren’t
serious
enough.
If
you
don’t
use
a
flash,
then
it
may
be
OK.
No,
I
don’t
agree
with
this.
Teenagers
are
too
young
to
make
their
own
decisions.
I
disagree.
They
can
learn
a
lot
from
working.
语法重点:含情态动词的被动语态
定义
含情态动词的被动语态用来说明某个被动性动作所反映出的感情和态度。初中阶段的常见情态动词有：can,
may
,
need
,
must
,
should等。
谓语部分含有情态动词的被动语态的构成是：
情态动词+be+过去分词
含情态动词的被动语态
肯定句：主语+
情态动词+be+动词过去分词.
否定句：主语+情态动词+not+
be+动词过去分词.
一般疑问句：情态动词+
主语+
be+
动词过去分词?特殊疑问句：特殊疑问句+情态动词（+主语）+be+过去分词?
句式
(一)将主动语态的宾语变成被动语态的主语。
(二)将含情态动词的主动句式变成被动句式，即：
“情态动词+动词原形”变成“情态动词+be+过去分词”，然后再在其后加“by+主动句中的主语(人称代词用宾格)”。by短语也可省略。请看下列各句：
转变方法
You
should
finish
your
homework
first.
Your
homework
should
be
finished
(by
you)
first.
You
can
take
this
magazine
home.
This
magazine
can
be
taken
home
(by
you).
含情态动词的疑问句、否定句的变化均需借助于情态动词完成。
一般疑问句:
直接将被动语态的陈述句中的情态动词提前。
句式变换
Must
this
task
be
finished
at
once?
这项任务必须立即完成吗？
注意:
含情态动词的被动语态的一般疑问句的回答，应保留原情态动词，但must表“必须”时，其否定回答应用needn’t；need表“必要”时，其肯定回答应用must。如：
—
Must
my
exercise
book
be
handed
in
now?
我的练习本必须现在上交吗？
—
Yes,
it
must.
是的，必须现在上交。
（No,
it
needn’t.
不，不必现在上交。）
2.
特殊疑问句:
由特殊疑问词加上被动语态的
一般疑问句构成。
When
must
this
task
be
finished?
这项任务必须在什么时候完成？
3.
否定句:
在情态动词后面加上not或never即可，
但must表“必要”
时否定式为needn’t。
This
task
needn’t
be
finished
at
once.
这项任务没必要立即完成。
4.
反意疑问句:
借助情态动词构成附加疑问部分。
如：
This
bridge
can
be
built
next
year,
can’t
it?
这座桥明年能建成，是吗？
Teenagers
________________
to
choose
their
own
clothes.
应该允许青少年选择他们自己的服装。
Students
___________________
to
have
part-time
jobs.
不应该允许学生们做兼职工作。
_____
these
books
_________
out
of
the
reading
room?
可以把这些书带出阅览室吗？
When
______
the
work
__________
?
这些工作必须什么时候完成？
Practice
should
be
allowed
should
not
be
allowed
Can
be
taken
must
be
finished
Rewrite
the
sentences
according
to
the
example.
4a
1.
You
must
clean
your
bedroom
every
day.
Your
bedroom
must
be
cleaned
every
day.
2.
I
will
the
housework
in
the
afternoon.
The
housework
will
be
done
in
the
afternoon.
3.
Parents
will
encourage
their
children
to
do
social
work
for
their
community.
Children
____________________________________
____________________________________
will
be
encouraged
(by
their
parents)
to
do
social
work
for
their
community.
4.
Do
you
think
we
must
keep
teenagers
away
from
the
Internet?
Do
you
think
teenagers________________________
________________________
5.
Parents
should
give
teenagers
chances
to
make
their
own
decisions.
Teenagers___________________________________
___________________________________
must
be
kept
away
from
the
Internet
(by
us)?
should
be
given
chances
to
make
their
own
decisions
(by
their
parents).
Grammar
Do
you
think
we
must
keep
teenagers
away
from
the
Internet?
你认为我们必须使青少年远离网络吗？
例:
她病得好几周都没上班了。
Her
illness
kept
her
away
from
work
for
several
weeks.
【句型解析】
keep
(sb.)
away
from
意为“避免（某人）接近；
（使某人）远离”。
Fill
in
the
blanks
with
the
correct
forms
of
the
words
in
brackets.
4b
Should
teenagers
__________
(ask)
to
move
out
when
they
start
working?
In
many
Western
countries,
teenagers
____________
(allow)
to
move
out
at
eighteen.
Their
parents
believe
that
they
should
___________
(educate)
to
take
care
of
themselves
from
a
young
age.
This
way,
when
they
________
(start)
working
they
can
manage
their
own
lives.
be
asked
are
allowed
be
educated
start
However,
in
most
Asian
societies,
it
is
not
common
for
teenagers
to
_________
(move)
out.
Chinese
parents
believe
that
it
is
better
for
children
to
live
with
parents
who
can
__________
(take)
care
of
them.
But
the
young
should
then
look
after
their
parents
as
they
get
older.
That
is
why
many
Chinese
adults
__________
(continue)
to
live
with
their
parents.
move
take
continue
You
and
your
friend
are
starting
an
English
club.
Make
a
list
of
rules
about
what
should
and
should
not
be
allowed.
4c
Members
should
be
allowed
to
use
dictionaries.
Yes,
but
they
should
only
use
English-
English
dictionaries.
A:
Members
shouldn’t
be
allowed
to
speak
Chinese.
B:
I
agree.
Only
in
this
way
can
you
improve
your
English.
Sample
Dialogue
1.
Today
a
lot
of
information
can
_______
online.
A.
receive
B.
be
received
C.
is
received
D.
receiving
2.?—
Must
we
clean
the
classroom
now?
—
No,
you
needn’t.
It?______
after
school.
A.
may
clean?????
B.
must
clean???
C.
need
be
cleaned??
D.
can
be
cleaned
一、单项选择。
Exercise
3.
The
song
reminds
me
of
my
old
school
days
as
soon
as
it
______.
A.
is
played
B.
plays
C.
will
be
played
D.
will
play
4.—Have
you
finished
your
project?
—Not
yet.
I’ll
finish
it
if
I
_______
ten
more
minutes.
A.
give
B.
am
given
C.
will
give
D.
will
be
given
5.
He
_______
late
to
watch
the
football
match
till
midnight,
so
he
is
sleepy
today.
A.
woke
up
B.
stayed
up
C.
put
up
D.
got
up
6.
I’m
allowed
to
go
out
with
friends
at
night,
but
I
have
to
be
home
_______
10:
00
pm.
A.
in
B.
on
C.
by
D.
at
1.
I
think
one
day
books
may
__________
(replace)
by
computers.
2.
Paper
should
not
__________
(throw)
away.
3.
Books
and
CDs
can
____________
(borrow)
from
the
library.
be
replaced
be
thrown
be
borrowed
二、用所给动词的正确形式填空。
4.
More
man-made
satellites
must
_________
(send)
up
into
space.
5.
The
sun
and
its
planets
_________
(call)
the
solar
system.
6.
The
work
should
_______
(do)
at
once.
be
sent
are
called
be
done
三、翻译下列句子。
1.
需要好好地教育青少年。
_________________________________
2.
这辆小汽车不能修了。
_________________________________
3.
这封信必须现在寄出去吗？
_________________________________
4.
会议应该在哪举行？
_________________________________
Teenagers
need
to
be
educated
well.
This
car
can’t
be
repaired.
Must
this
letter
be
posted
now?
Where
should
the
meeting
be
held?
1.
You
should
make
up
the
bed
every
day.
(改为被动
语态)
The
bed
_______
_______
_______
up
every
day.
2.
We
can’t
see
stars
in
the
daytime.
(改为被动语态)
Stars
_______
_______
_______
in
the
daytime.
3.
You
must
return
the
book
on
time.
(改为被动语态的
一般疑问句形式)
_______
the
book
______
________
on
time?
should
be
made
can’t
be
seen
Must
be
returned
四、句型转换。