Module 8 Accidents Unit 3 Language in use 课件（21张PPT）

(共21张PPT)
外研版
初中英语
八年级上册
Accidents
Module
8
通过上一模块的学习，我们知道过去进行时可以表示过去某一时刻或时段正在进行或持续的动作，句子常和
at?...
yesterday
morning,
at
that
time,
at?...
last
night
等时间状语连用。其实，过去进行时还可以和
when,
while,
as
引导的过去时间状语从句连用，形成复合句。
(1)?While
the
lights
were
changing
to
red,
a
car
suddenly
appeared
round
the
corner.?
正当交通信号灯要变成红灯的时候，一辆小轿车突然从拐角处驶出来。
(2)?One
day,
when
Henry
was
working
in
a
restaurant,
a
snake
suddenly
appeared.?
一天，当亨利正在餐馆里工作时，一条蛇突然钻了出来。
(3)?I
was
trying
to
pick
it
up
when
it
bit
me
again.?
我正试图捡起它（那条蛇），突然它
(
蛇）又咬了我一口。
(4)?As
the
doctors
were
checking
him,
the
pain
got
worse.?
医生给他做检查时，疼痛加剧了。
下面，让我们来分析
when
和
while
从句与过去进行时连用的几种情况。
1.
when
所引导的时间状语既可以指时间点，也可指时间段；while
所引导的时间状语只指时间段。因此，在
when
引导的时间状语从句中，动词可以是终止性动词，也可以是延续性动词；而在
while
从句中，动词必须是延续性动词。例如：
They
arrived
while
we
were
having
dinner.?
我们吃饭的时候他们到了。
这句话还可以写成：
They
arrived
when
we
were
having
dinner.
2.
由
when
引导的时间状语从句，如果主句用过去进行时、从句用一般过去时，则表示一个动作正在进行的时候另一个动作（突然）发生了，强调后一动作发生的突然性。请看例句：
We
were
talking
when
the
teacher
came
in.?
我们正在讲话，老师（突然）进来了。
该句也可以用
while
表达，但与用
when
表达有细微的区别，请注意体会：
While
we
were
talking,
the
teacher
came
in.?
我们正在讲话的时候，老师进来了。（只表明老师进来的事实，不强调突然性）
3.
当主句和从句的动作都是延续的或同时发生的，两句都用过去进行时的时候，多用
while
引导。例如：
They
were
singing
while
we
were
dancing.?
他们在唱歌，我们在跳舞。
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.
Complete
the
sentences
with
when
or
while.
while
when
when
while
Look
at
what
Tony
did
last
Saturday.
Complete
the
You
column.
Time
Tony
You
8:30
am-11:30
am
playing
in
the
park
visiting
my
grandparents
12:30
pm-1:20
pm
having
lunch
with
his
friends
2:00
pm-4:00
pm
playing
football
5:00
pm-6:30
pm
doing
homework
Complete
the
conversation
with
the
correct
form
of
the
words
in
the
box.
appear
bite
show
throw
Doctor:
When
did
the
snake
(1)____
you?
Henry:
Earlier
this
morning.
It
suddenly
(2)_________
in
front
of
me
and
bit
my
hand.
bite
appeared
Doctor:
Can
you
(3)_____
me
a
photo
of
it?
Henry:
Yes.
Here
it
is.
Doctor:
Oh,
the
snake
was
on
a
table.
Henry:
Yes.
I
(4)______
it
on
the
table
after
it
bit
me.
show
threw
Complete
the
passage
with
the
correct
form
of
the
expressions
in
the
box.
fall
off
just
in
time
pay
attention
side
by
side
When
the
girl
was
riding
her
bike
(1)___________
with
a
friend,
she
had
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
paying
attention
just
in
time
fell
off
1.
When
Jim’s
mother
came
in
he
_____
his
homework.
(2013长沙)
A.
is
doing
B.
has
done
C.
was
doing
2.
Sally
took
a
photo
of
her
friends
while
they
_______
computer
games.
(2013杭州)
A.
play
B.
are
playing
C.
have
played
D.
were
playing
3.
The
twins
didn’t
go
to
the
theatre,
they
_____
the
light
music
all
night.
(2013河北)
A.
have
enjoyed
B.
will
enjoy
C.
are
enjoying
D.
were
enjoying
Homework
Review
the
grammar
focus
we
have
learned
in
this
module.
1.
To
preview
the
Module
9
Unit
1;
2.
To
practise
the
vocabulary.
教学课件
外研版
初中英语
八年级上册