Unit 8 Natural disasters Grammar课件（56张）

How’s the weather?
It is snowing.
She is walking slowly in the snowstorm.
He is riding a bike in the snowstorm.
They are running in the snowstorm.
at about seven yesterday morning
It was snowing at about seven yesterday morning.
She was walking slowly in the snowstorm at nine yesterday morning.
at nine yesterday morning
at 3 p.m. yesterday
He was riding a bike in the snowstorm at 3 p.m. yesterday.
They were running in the snowstorm from 9:00 to 10:00 last Saturday.
from 9:00 to 10:00 last Saturday
at about seven yesterday morning
When we talk about things that were happening at a particular time _________ (in the past / in the future), we should use__________________.
at nine yesterday morning
at 3 p.m. yesterday
from 9:00 to 10:00 last Saturday
Past continuous tense(过去进行时)
in the past
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.
? 在过去某段时间一直在进行的动作
(a) From 1983 to 1998, he was teaching
at Yale.
(b) They were building a dam last
winter.
过去进行时(past continuous tense)
1基本概念：表示过去某一时刻正在进行的动作以及过去某一段时间内持续进行的动作
2 常用时间状语：
1)then, at this/that time, at 9.00 last night …
2) this morning, the whole day/morning,
from 8 to10 last evening.…
I am walking slowly.
I was walking slowly.

She is riding a bike.
She was riding a bike.
They are running.
They were running.
It was snowing.
It is snowing.
am/is doing

are doing
was doing
were doing

We use “was doing” with the pronouns(代词)
______,_______,______and ______.
We use “were doing” with the pronouns(代词)
______, ______ and ______.



we you they
I he she it

I was , I was, we were, were,
You were, you were, you were, were,
He, she, it was, they were, were,
Was, were, we are sure!
Was, were, we are sure!
Let’s chant
Tom
play
football.
was
ing
Lucy
was
read
a book.
ing
What was Tom doing at that moment?
What was Lucy doing at 2:30 p.m. yesterday?
看图回答问题
She was drinking milk
at this time yesterday.
What was she doing at this time yesterday?
用所给动词的适当形式填空。
It was ten o’clock on Sunday morning.
The family were all in the garden. Mr
King and Mrs King ___________(sit)
under the tree, and they __________(talk)
and ________(laugh). Their son Jack
___________(read) an interesting book.
Their daughter Wendy __________ (play)
with their dog. Everyone was happy.
were sitting
were talking
laughing
was reading
was playing
Exercise
was doing

were doing
doing
doing
was not = wasn’t
were not = weren’t
was not
were not
subject(主语) doing?

Yes, subject was/were .
No, subject wasn’t/weren’t.



Was/Were
Were they playing chess at that time?
Yes, they were.
Were they playing tennis at that time?
No, they weren’t.



Tips: 别忘了带上时间状语。at that time, at 7 o’clock yesterday morning, from 6 to 8 the day before yesterday…
Was Father Christmas …ing … ?
1. --Amy, I called you yesterday evening, but nobody answered the phone
-- Oh, I ____ a walk with my mother at that time.
take B. took
C. am taking D. was taking
2. When I came back yesterday evening, my brother _____ his homework.
A. is doing B. has done C. was doing D.did
D
C
3. What was he doing? He __________ (chat) with me on the internet.
4. What ______you _______(do) at this time yesterday?
5. John _________ (lie) on the grass in the park at 9 a.m. yesterday morning.
6. They were doing their homework at that time. (改为否定句，一般疑问句，并作肯定和否定回答)
was chatting
were doing
was lying
Exercises:
He was playing football on the play ground.（对划线部分提问）
My parents were playing computer games then.(改为否定句，一般疑问句，作否定回答)
The sun was shining brightly .(一般疑问句，作肯定回答)
过去进行时与一般过去时的区别(1)

过去进行时着重描述当时正在进行的动作，它的特点是：未完成，强调过程；
一般过去时表示一个已经完成的动作，表示动作发生过，而且已经结束了，强调结果。
Mary __________?a dress when she cut her finger.
A. made?????????? B. is making
C. was making??? ?D. makes
was making表示正在做衣服的过程，如用made则表示这一动作已结束，做衣服的动作已结束与cut her finger就没有联系。
2. He _____(write) a letter，then went to bed．
wrote
wrote表示动作已结束，做另一件事，如用
was writing就与went to bed在逻辑上相矛盾。
3. I’m sorry you missed the bus. It ______(leave) 5 minutes ago． (2006年徐州)
left
4. Mr John, we find your watch.
-Thank you! Where __________ (find) it? （2006年绍兴）
did you find
过去进行时与一般过去时的区别(2)

1过去进行时侧重表示动作的延续；
2一般过去时表示过去某时发生过某事.
He __________ all night last night.(write)
(生动的描写，他一直写……)
He _____ something last night．(write)
(说明他写了……的事实)
was writing
wrote
A snowstorm hit Sunshine Town
was reading
were doing
was having
was ringing
Were
waiting
was walking
the snowstorm came .
What was Mr. Wu doing at that time?
He was reading the newspaper
when
the simple past tense
the past continuous tense
the long action
the short action
Rule: When a short action happened at the same time as a long action, we can use “________” before the short action.
when
When the snowstorm came he was reading the newspaper .
,
the past continuous tense
Rule: When a short action happened at the same time as a long action, we can use “______________” before the long action.
What was Simon doing?
he was having the breakfast.
when/while/as
When/while/as he was having the breakfast, the snowstorm came.
the simple past tense
the long action
when/while/as
the short action
The snowstorm came
the past continuous tense
the past continuous tense
Rule: We can use “_______” to join two long actions.
What was Millie doing ?
Millie was walking to the bus stop
while
the long action
the long action
while
Sandy was waiting for a taxi.
What about Sandy?
Sum up:
Simple past tense
Past continuous tense
short action
long action
when/while/as
while
when
Verbs of short action:
come, go, start, finish, arrive, fall, hit, run…
Verbs of long action:
wait, watch, take, make, sleep, play, wash, have, keep, clean, cook…
Main clause 主句 Conjunction
连词 Subordinate clause 从句
long action short action
short action long action
long action long action
“主长从短”型：when。
主句用过去进行时，从句用一般过去时。
It was raining hard when we arrived.
我们到达时正下着大雨。
What were you doing when she called you?
她给你打电话时你正在做什么？
2. “主短从长”型：主句表示的是一个短暂性动作，而从句表示的是一个持续性动作时，三者都可用。
此时主句用一般过去时，从句用过去进行时。
He fell asleep when/while/as he was reading.
他看书时睡着了。
When/While/As we were dancing, a stranger came in.
当我们跳舞时，一位陌生人走了进来。
3. “主长从长”型：即主、从句表示两个同时进行的持续性动作，常用while，且主句和从句皆常用过去进行时。
I was doing my homework while my
brother was playing with his toys.
当我弟弟玩玩具的时候，我正在做作业。
While my mother was cooking, my father was reading newspapers.
当我妈妈做饭的时候，我爸爸正在看报纸。
另外，在将来时从句中，常用when，且从句须用一般现在时代替将来时。
When the manager comes here for a visit next week, I’ll talk with him about this.
下周经理来这里参观时，我会和他谈谈此事。
若要表示主句动作伴随从句动作同时发展变化，有类似汉语“随着”的意思，英语习惯上要用as。
while也有“而” 、“却”的意思，表示对比。
There’s lots of rain in the southeast, while there’s little in the northwest.
东南部雨量充足，而西北部则很少下雨。
As time goes by, my memory seems to get worse and worse.
随着时间的流逝，我的记忆力似乎越来越差。
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.
Sum up:
Simple past tense
Past continuous tense
short action
long action
when/while/as
while
when
Main clause 主句 Conjunction
连词 Subordinate clause 从句
long action short action
short action long action
long action long action
Playing in the snow
Simon, arrive
Amy, get some
snow from the
ground
When Simon arrived, Amy was getting some snow from the ground.
Kitty,
stand
beside
her
Suzy,
make
a snowman
While Suzy and Kitty were building a snowman, Millie was taking photos.
Daniel,
make a
snowball,
fall over
Daniel fell over when/while/as he was making a big snowball.
Peter, hide
behind a tree
a snowball,
hit him
Peter was hiding behind a tree when a snowball hit him.
Andy,
run towards
Millie
Millie,
take some
photos
When/While/As Millie and her classmates were playing in the snow, Andy ran towards them.
Playing in the snow
Some Class 1, Grade 8 students went to play in the snow. Complete the sentences with the correct forms of the verbs in blanks. Use when, while and as to connect the sentences.
When
arrived
was getting
When/While/As
were building
was taking
fell
when/while/as
was making
was hiding
when
When/While/As
were playing
hit
ran
请点击
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。
was doing
came
was watching
returned
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 in
England (at) 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
?3. What were you doing when I
________ at the door?
? 我敲门的时候你在干什么？
knocked
6. Mary ___________ while Peter
___________ the piano.
? Mary在跳舞，而Peter在弹钢琴。
7. They ____________ the newspaper
when I __________ the room.
? 我走进屋子时他们正在看报纸。
8. What _____ you _______ at five
yesterday afternoon?
? 昨天下午5点你在做什么？
was dancing
was playing
were reading
walked into
were
doing
Homework
Review the past continuous tense and the use of when/while/as.
Finish the exercises .