(共37张PPT)
Unit
3
Language
in
use
Module
8
While
the
lights
were
changing
to
red,
a
car
suddenly
appeared
round
the
corner.
When
Henry
was
trying
to
find
the
snake,
his
hand
began
to
hurt
badly.
I
was
trying
to
pick
it
up
when
it
bit
me
again.
Read
the
sentences
and
pay
attention
to
the
underlined
parts.
过去进行时(2)
when和while的区别
(一)
when,while都有“当……时候”的意思。when既可表示某一点时间,也可以表示某一段时间。
在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。如:
I
was
just
reading
a
book
when
she
came
into
my
room.
她走进我房间时,我正在看书。
Were
you
writing
when
the
teacher
came
in?
老师进来的时候,你在写信吗?
When
he
was
a
child,
he
was
always
trying
out
new
ideas.
他小时候就常常试验一些新的设想。
(二)
while只能表示某一段时间,不表示某一点时间。在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在。如:
While
Jim
was
mending
his
bike,
Lin
Tao
came
to
see
him.
正当吉姆修自行车时,林涛来看他。?????
You
can’t
do
your
homework
while
you’re
watching
TV.
你不能一边看电视一边做家庭作业。
(三)
when和while的区别还在于:
while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态。如:
While
they
were
talking,
the
bell
rang.
他们谈话的时候,上课铃响了。
I
was
doing
my
homework
when
my
mother
came
back
home
yesterday
evening.
昨天晚上妈妈回家的时候,我正在做家庭作。
(四)
when可表示“这时(突然)”;while表示“而”“却”(表示对比)
。如:
I
was
just
about
to
go
to
bed
when
I
heard
a
knock
on
the
door.
我正要睡觉,听见有人敲门。
He
likes
coffee,
while
she
likes
tea.
他喜欢咖啡,而她却喜欢茶。
1
He
was
listening
to
music
______
he
was
riding
his
bike.
2
I
was
waiting
at
the
lights
______
I
saw
the
boy
fall
off
his
bike.
3
I
was
walking
in
the
street
______
an
accident
happened.
4
The
driver
was
talking
on
his
mobile
phone
______
he
was
driving.
while
Complete
the
sentences
with
when
or
while.
when
when
while
[链接]
as的意思是“正当……时候”“随着……”,它既可表示一个具体的时间点,也可以表示一段时间。as可表示主句和从句的动作同时发生或同时持续,又可表示一个动作发生在另一个动作的持续过程中。如:
As
I
got
on
the
bus,
he
got
off.
我上车,他下车。
As
the
doctors
were
checking
him,
the
pain
got
worse.
医生给他做检查时,疼痛加剧了。
As
it
grew
darker,
it
became
colder.
天色越晚,天气越冷。
注
意
(1)
如主句谓语动词表示的是短暂动作,从句时间状语指一段时间,when,
while,
as
三者可通用。
Peter
came
in
while
/as
I
was
watching
TV.
当Peter进来的时候我正在看电视。
I
was
watching
TV
when
Peter
came
in.
当Peter进来时我正在看电视。
He
entered
the
room
when
/
as
/
while
the
meeting
was
going
on.
正当开会的时候他走进了房间。
(2)
as
和
while可用来指一段时间,但
as
强调主句与从句表示的动作同时发生,while强调主句表示的动作是在
while从句的动作延续中发生。
As
my
mother
sang
those
old
songs,
tears
ran
down
her
cheeks.
当我妈妈唱起那些老歌时,眼泪顺着她的脸颊流了下来。
I
came
in
while
he
was
reading
an
interesting
book
in
his
room.
我进来时他正在房间里读一本有趣的书。
Practice
1.
I
______________
(watch)
TV
when
she
_______
(call).
2.
When
the
phone
_______
(ring),
she
___________
(write)
a
letter.
3.
While
we
____________
(have)
a
picnic,
it
_________
(start)
to
rain.
4.
While
John
____________
(sleep)
last
night,
someone
_______
(steal)
his
car.
was
watching
called
rang
was
writing
were
having
started
was
sleeping
stole
5.
While
we
____________
(wait)
for
the
bus,
a
girl
____________
(run)
up
to
us.
6.
I
____________
(telephone)
a
friend
when
Bob
__________
(come)
in.
7.
Jim
____________
(jump)
on
the
bus
as
it
____________
(move)
away.
8.
We
____________
(test)
the
new
machine
when
the
electricity
________
(go)
off.
were
waiting
was
running
was
phoning
came
was
jumping
was
moving
were
testing
went
9.
While
mother
___________
(make)
the
bed,
the
door
bell
____________
(ring).
10.
As
I
____________
(walk)
in
the
park,
it
_______
(begin)
to
rain.
11.
It
was
quite
late
at
night.
George
__________
(read)
and
Amy
__________
(play)
her
needle
when
they
__________
(hear)
a
knock
at
the
door.
was
making
rang
was
walking
began
was
reading
was
playing
heard
(
)
1.
Mary
______
a
dress
when
she
cut
her
finger.
A.
made
B.
is
making
C.
was
making
D.
makes
Practice
解析:割伤手指是已发生的事情,应用过去时。同时,when表时间的同时性,“玛丽在做衣服时”提供事情发生的背景,因此用过去进行时。
C
(
)
2.
While
she
___
the
newspaper,
Granny
___
asleep.
A.
read;
was
falling
B.
was
reading;
fell
C.
was
reading;
was
falling
D.
read;
fell
解析:while
意为“当……之时”。描述一件事发生的背景时,用过去进行;当一个长动作发生的时候,另一个短动作发生了。句意:“在她看报纸时,奶奶睡着了”
。Fall
asleep意为“睡着了”。
过去进行时的基本用法:
表示过去某个时刻或时间正在进行过持续进行的动作,
句中往往需要有时间状语来表示这一特定的时间。故选B。
B
Work
in
pairs
to
ask
and
answer.
Look
at
the
pictures
and
then
make
conversations.
What
were
they
doing
when
it
began
to
rain?
They
were
playing
computer
games
when
it
began
to
rain.
They
were
playing
chess
when
it
began
to
rain.
While
Jake
was
sleeping,
what
did
his
brother
do?
While
Jake
was
sleeping,
his
brother
was
playing
basketball.
While
they
were
dancing,
the
telephone
rang.
When
the
telephone
rang,
they
were
dancing.
While
they
were
dancing,
what
happened?
He
was
singing
when
the
baby
started
to
cry.
While
he
was
singing,
the
baby
started
to
cry.
While
he
was
walking,
a
taxi
came.
He
was
walking
when
a
taxi
came.
Last
Saturday
while
Tony
was
playing
football,
I
was
swimming
with
my
friends
in
the
park.
Last
Saturday
while
Tony
was
doing
homework,
I
was
watching
TV.
Complete
the
conversation
with
the
correct
form
of
the
words
in
the
box.
D:
When
did
the
snake
(1)______
you?
H:
Earlier
this
morning.
It
suddenly
(2)______
in
front
of
me
and
bit
my
hand.
D:
Can
you
(3)______
me
a
photo
of
it?
H:
Yes.
Here
it
is.
D:
Oh,
the
snake
was
on
a
table.
H:
Yes.
I
(4)______
it
on
the
table
after
it
bit
me.
bite
appear
bite
show
throw
appeared
show
threw
Complete
the
passage
with
the
correct
form
of
the
expressions
in
the
box.
When
the
girl
was
riding
her
bike
(1)___________
with
a
friend,
she
has
an
accident.
They
were
talking
and
they
were
not
(2)_______________.
A
car
came
round
the
corner
but
stopped
(3)___________.
The
car
did
not
hit
her,
but
she
(4)_________
her
bike.
side
by
side
fall
off
just
in
time
pay
attention
side
by
side
just
in
time
paying
attention
fell
off
Around
the
world
An
emergency
landing
US
Airways
Flight
1549
Plane
crash
into
Hudson
River
Search
and
find
out
information
about
US
Airways
Flight
1549
on
the
Internet.
US
Airways
Flight
1549
was
US
Airways'
scheduled
domestic
commercial
passenger
flight
from
LaGuardia
Airport
in
New
York
City
to
Charlotte
/
Douglas
International
Airport,
Charlotte,
North
Carolina.
On
January
15,
2009,
the
Airbus
A320-214
flying
this
route
struck
a
flock
of
Canada
Geese
(加拿大黑雁)
during
its
initial
climb
out,
lost
engine
power,
and
ditched
(紧急降
落)
in
the
Hudson
River
off
midtown
Manhattan.
The
bird
strike,
which
occurred
just
northeast
of
the
George
Washington
Bridge
about
three
minutes
into
the
flight,
resulted
in
an
immediate
and
complete
loss
of
thrust
(推力)
from
both
engines.
When
the
crew
of
the
aircraft
determined
that
they
would
be
unable
to
reliably
(可靠地)
reach
any
airfield,
they
turned
southbound
and
glided
over
the
Hudson,
finally
ditched
in
the
river
about
three
minutes
after
losing
power.
The
incident
became
known
as
the
“Miracle
(奇迹)
on
the
Hudson”.
Writing
a
news
report
about
an
accident
Think
about
a
recent
accident
you
know.
Write
notes.
When
and
where
did
it
happen?
Why
did
it
happen?
How
did
it
happen?
What
happened
after
the
accident?
Module
task
Use
your
notes
and
write
sentences
for
your
news
report
about
the
accident.
A
terrible
accident
happened
at
…
(Name)
was
…
He
/
She
was
not
…
(The
accident)
happened
because
…
After
the
accident
…
Bicycles
are
popular
with
people.
Most
people
think
bicycles
are
much
safer
than
any
other
vehicle.
But
sometimes
bicycle
accidents
also
happen.
They
can
bring
us
sadness
and
death
as
well.
At
about
4:15
yesterday
afternoon
in
Caishikou
Street,
a
young
man
was
riding
very
fast,
listening
to
an
MP3.
Meters
away
there
was
a
sharp
down
to
the
left,
but
the
young
man
didn’t
slow
down.
Suddenly
a
car
came
from
the
opposite
side.
To
avoid
hitting
the
car,
the
young
man
ran
into
the
wall
and
his
arm
was
badly
hurt.
The
car
driver
rushed
to
him,
called
the
122
hotline
and
sent
him
to
the
hospital.
下面图画描述的是发生在学校办公楼的一件事。请为学校黑板报用英语写一篇短文,介绍此事。注意:短文要包括图画所表现的主要内容,词数100左右。
思路指津:
1.
时态:由于是讲述一个故事,时态自然是过去时,
2.
谋篇布局:讲述一个故事,
最好以时间为线索组织短文
3.
主题:
注意人物对话,
突出
“Honesty
is
the
best
policy”
的中心。
One
day,
Mr.
Li
was
reading
a
book
in
his
office
after
school
when
a
ball
broke
the
window
and
flew
in.
Mr.
Li
was
greatly
shocked
when
the
ball
hit
him
on
the
head.
He
took
the
ball
and
came
downstairs
to
see
who
threw
the
ball.
He
met
a
little
boy
at
the
doorway
and
the
boy
said
it
was
he
who
had
thrown
it.
The
boy
said
sorry
to
Mr.
Li
and
Mr.
Li
praised
the
boy
for
his
honesty.
Mr.
Li
told
the
boy
to
be
more
careful
next
time.
The
boy
thanked
him
for
his
kindness
and
said
goodbye
to
him,
running
away
with
the
ball.?