Unit 8 Natural disasters第4课时 Grammar课件(共42张PPT)八年级英语上册牛津译林版

(共42张PPT)
Unit 8
Natural Disasters
Grammar
To learn to use the past continuous tense to talk about things that were happening for some time in the past
To learn to use past continuous tensewith ‘while’ , ‘when’ and ‘as’
.
Learning aims
Words review
break
break down
because of
vi. 损坏；打破
出故障；坏掉
由于；因为
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
Lead in
Task 1
What were you doing at 7 o’clock last night
I was doing some housework.
I was waiting for a bus.
Look and say
What was the boy doing between 7 o’clock and 9 o’clock yesterday
He was doing his homework.
I was sleeping.
What was your father doing when you came back home yesterday
He was cooking.
What was your mother doing
when you saw her half an hour ago
She was watching TV with my father.
What were they doing at that time last week
They were singing.
How about them
They were playing football.
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
Discuss
Task 2
Past Continuous Tense
过去进行时
过去进行时主要表示：
在过去某一时刻正在进行的动作
They were eating breakfast at 7:00 am
yesterday.
(b) I was writing a letter at this time
yesterday.
(c) Five minutes ago, Danny was looking
out of the window and Suzy was
reading a book.
Past continuous tense
在过去某段时间一直在进行的动作
(a) From 1983 to 1998, he was teaching
in the college.
(b) They were building a bridge last
winter.
Past continuous tense
过去进行时的句式
（1）基本结构：was/were + v-ing
（2）否定式： was/were not + v-ing
was not = wasn’t
were not = weren’t
（3）一般疑问句： was/were+主语+V-ing
（4）特殊疑问句： wh-+was/ were +主语+V-ing
Basic structure
主语 + be动词 + 动词的现在分词
I
was
He / She / It
We / You / They
was
were
singing.
flying a kite.
watching TV
结构: be+doing ( how to use "be" )
How to form the ‘-ing’ form of a verb.
Most verbs +ing walk
Verbs ending in e -e+ing come
Verbs ending in ie -ie+y+ing lie
Short verbs ending in a vowel + a consonant Double the consonant +ing run
walking
coming
lying
lie 躺,卧;说谎
running
注：下列几类动词通常不用于进行时。
① 表示状态的动词be；
② 感官动词：feel，hear，sound，look，smell，taste，等；
③ 表示思维或心理状态的动词：
believe, forget，consider(认为)，
know，remember，hope，wish，want等；
④ 表示所属关系的动词： belong，have，own，hold（容纳）等。
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
Practice
Task 3
用括号内词的适当形式填空
What _________you _______(do) at this time yesterday.
He ___________(watch) TV from 8p.m. to 10p.m.
I ____________(play) piano.
3. John __________(fly) kites in the park at 9a.m. yesterday morning.
4.Sandy ___________(call) Daniel at that time
5.He ____________(read) while his brother _________(watch) TV.
6.They __________ (chat) when their teacher _______(come) into the classroom.
were
doing
was watching
was playing
was flying
was calling
was reading
was watching
were chatting
came
Mr. Wu: What a terrible snowstorm! It
started at about seven this
morning. I ______________
(read) the newspaper then.
What ______ you ______ (do),
Simon
Simon: I __________ (have) breakfast.
Mr. Wu: What about you, Millie
was reading
were
was having
doing
A snowstorm hit Sunshine Town
Millie: I ____________ (walk) to the
bus stop. Sandy, I saw you and
your parents standing on the side
of the road. ________ you
________ (wait) for a taxi
Sandy: Yes. My dad’s car broke down
because of the cold weather. He
_____________ (ring) someone to
come and help when you saw us.
was ringing
Were
waiting
was walking
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
Discuss
Task 4
when
I was doing homework
I was cleaning the desk
I was talking with my deskmate
I was preparing for the next lesson
I was looking for the book
I was having breakfast
When the teacher came in.
Past continuous tense
with ‘while’ , ‘when’ and ‘as’
when, while 和 as 这三个词都有
“当……时候”的意思。
There were fewer sandstorms when my grandparents were young.
我祖父母年轻时沙尘暴要少些。
Past continuous tense with
‘while’ , ‘when’ and ‘as’
While Mille was watching TV, her mum was sleeping.
米莉在看电视时，妈妈在睡觉。
I saw a traffic accident as I was riding to school this morning.
今天早晨我骑自行车时看到一起交通事故。
2.when 和 as 既可以指某一点时间，也可以指某一段时间，其从句谓语动词表示的动作既可以是瞬间性的，也可以是延续性的；while指一段时间，从句中的谓语动词必须是延续性的。即：指一段时间时when, while 和as都可用；指一点时间时，只能用when或as，不能用while。
when ,while 的区别
I was reading when you came in.
I was reading when you were sleeping.
When引导的时间状语从句，谓语是延续性的，或者短暂性的。通常用一般过去时，也可以用进行时。
when while 的区别
My mother was watching TV while I was doing my homework.
He was taking a shower while his wife was talking on the phone.
while引导的时间状语从句，谓语动词只能是延续性的，通常用进行时。
The teacher came in ____ students were talking noisily.
=The students were talking noisily ___ the teacher came in.
when
while
when 后通常加短暂性动词，如：arrive, come in,
get up, open, close, finish, begin, come, go,
arrive, reach, get to, leave, move, borrow, buy, die, knock 等
While后通常加延续性动词, 如：live, run, stay,
clean, play, hold, watch, teach, read, study,
teach, eat, drink, write, dance, sing, smoke
等
试比较：
When/As he woke up, it was eight
o’clock.
2. While he woke up, it was eight
o’clock.
3. When/While/As I was waiting for a
bus, I met her.
×
√
×
3. 当 while , when 和 as 放在句首时，
两个句子应用逗号隔开。
When the teacher came in, we were talking.
While the pig was dancing, the rabbit was jumping.
As the two men were leaving, a message arrived.
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
Practice
Task 5
巩固练习
My wallet dropped on the ground _______ I
was running.
2. __________ I was falling asleep, there was
a loud knock on the door.
3. __________ he was reading, an
earthquake started.
4. Were the students listening to the teacher carefully __________ the teacher was giving
a lesson
5. __________ the telephone rang, I became nervous.
while
When
While
while
When
______ Simon ________ (arrive), Amy ____________ (get) some snow from the ground.
2. _______________ Suzy and Kitty
_____________(build) a snowman,
Millie ____________(take) photos.
3. Daniel ____ (fall) over ____________
he ____________ (make) a big snowball.
When
arrived
was getting
When/While/As
was building
was taking
fell
when/while/as
was making
Playing in the snow
4. Peter _____________(hide) behind
a tree ______ a snowball ___
(hit) him.
5. ________________ Millie and her
classmates _____________ (play) in
the snow, Andy _____ (run) towards
them.
was hiding
when
When/While/As
were playing
hit
ran
How is Peter like
Is he good at sports
His future plan is to become a doctor ,right
More practice
Task 6
1. --- Amy, I called you yesterday evening,
but nobody answered the phone.
--- Oh, I ____ a walk with my mother at
that time.
A. take B. took
C. am taking D. was taking
2. He _____ when the UFO arrived. He didn’t wake until the UFO disappeared.
A. slept B. was sleeping
C. was doing homework D. was singing
中考链接
3.I _______ a meal when you ______ me.
A.cooked, were calling B. was cooking, called
C. was cooking, were calling D. cooked, called
4. They _ a football game from 7 to 9 last night.
A.were watching B. watch
C. watched D.are watching
5. What book ____ you ____ when I _____ you at four yesterday afternoon
A.did, read, was seeing B. did, read, saw
C. were, reading, saw D. were, reading, saw
6. While she _____ TV, she ______ a sound outside the room.
A.was watching, was hearing
B. watched, was hearing
C. watched, heard D. was watching, heard
1. I _________ my homework when Mike
_____ last night.
昨天晚上迈克来的时候我正在写作业。
2. While Ann ____________TV, her
father ___ home.
安正在看电视时，她父亲回来了。
3. What were you doing when I
________ at the door
我敲门的时候你在干什么？
was doing
came
was watching
got
knocked
4. She ______________the room when I
____ to see her.
我去看她的时候她不是在打扫房间。
5. I _____________my vocation England
this time last summer.
去年夏天的这个时候我正在英国度
假。
wasn’t cleaning
went
was spending
6. 他在十五岁写出了第一部小说。
When he was 15, he wrote his first novel.
7. 若是天气好的话, 我总是到乡下去。
I always go to the country when the
weather is good.
8. 昨天下午三点，我正在上课。
I was having a class at 3:00 p.m.
yesterday.
9. 上周这时候你正在干嘛？
What were you doing at this moment
last week
Thank you!