牛津译林版八年级上册英语Unit 8 Natural disasters Grammar课件(共21张PPT)

(共21张PPT)
Unit 8 Natural disasters
Grammar
Grammar A
1. 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 a.m. yesterday.
(b) I was writing a letter at this time yesterday.
在过去某段时间一直在进行的动作
(a) From 6:40 a.m. to 7:20 a.m., we were reading English today.
(b) He was playing computer games until 12 o’clock yesterday evening.
Past continuous tense
2. 过去进行时的句式
(1) 基本结构：was / were + verb-ing
e.g. I was doing some shopping.
People were running wildly.
(2) 否定式：was / were not + verb-ing
was not = wasn’t were not = weren’t
e.g. I was not reading.
People were not running wildly.
(3) 疑问句：将 was / were 调到主语前
e.g. ---Was he running
---Yes, he was. / No, he wasn’t.
---Were they running
---Yes, they were. / No, they weren’t.
Watch, read and answer
What were you doing at 7 o’clock last night
I was doing some housework.
I was having dinner.
What were you doing from 7 to 9 p.m. yesterday
I was doing my homework.
I was watching TV.
What was your father doing when you came back home yesterday
He was cooking.
What was your brother doing when you saw him half an hour ago
He was playing computer
games.
A snowstorm hit Sunshine Town. Mr Wu is asking the students about plete their conversation with the correct forms of the verbs in brackets.
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 doing
was having
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 walking
Were waiting
was ringing
Practice
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
Grammar B
‘while’ , ‘when’ and ‘as’
1. when, while 和 as 这三个词都有“当……时候”的意思。
e.g. I was sleeping when the earthquake started.
As I was trying to find my way out, I suddenly heard some noise above me.
People were running in all directions while pieces of glass and bricks were falling down.
2. 用while, when, as这三个连词连接时间状语从句时，从句和主句的谓语动词时态有规定：
1) 当短动作和长动作同时发生，我们用过去进行时表示长动作，用一般过去时表示短动作
2) 两个都是长动作。用while连接从句
e.g. People were running while bricks were falling down.
3) 主句是短动作，用while, as, when连接从句(长动作)
e.g. While/As/When Millie was watching TV, Andy came into the room.
4) 主句是长动作，用when连接从句(短动作)
e.g. I was sleeping when the earth started to shake.
5) 两个都是短动作，常用as连接从句，强调同时发生
e.g. As Millie sat down, Andy came in.
3. 当 while , when 和 as 放在句首时，两个句子应用逗号隔开。放在主句后面时，不必用逗号隔开。
e.g. 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.
Practice
1. I ___________ (sleep) when it started to rain.
2. I was sleeping ______ the earthquake started.
3. Outside, people ____________ (run) in all
directions ______ pieces of glass and bricks
____________ (fall) down.
4. Hours later, ______________ I ____________
(try) to find way out, I suddenly heard some
noise above me.
was sleeping
when
were running
while
were falling
when/while/as
was trying
Some Class 1, Grade 8 students went to play in the plete the sentences with the correct forms of the verbs in brackets. Use when, while or as to connect the sentences.
1. ______ Simon ________ (arrive), Amy
_________ (get) some snow from the ground.
2. ______ Suzy and Kitty _____________ (build)
a snowman, Millie ___________ (take) photos.
When
arrived
was getting
While
were building
was taking
3. Daniel ____ (fall) over ______________ he
____________ (make) a big snowball.
4. Peter _____________ (hide) behind a tree
______ a snowball ___ (hit) him.
5. ______ Millie and her classmates
_____________ (play) in the snow, Andy
____________ (run) towards them.
fell
when/while/as
was making
was hiding
when
hit
While
were playing
was running
Exercises
1. --- What were you doing this time yesterday
--- I _____ on the grass and drawing a picture.
A. sit B. sat
C. am sitting D. was sitting
2. When I came back yesterday evening, my brother _____ his homework.
A. is doing B. has done C. was doing
3. --- I called you at 4:00 yesterday afternoon, but no one answered.
--- Sorry, I _____ with my friends at that time.
A. swim B. swam
C. will swim D. was swimming
4. --- 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
5. 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
6. ______ I took the brush away, I dropped some paint _______ the paper.
A. As; onto B. While; on
C. When; in D. Since; on
1. 上周这时候你正在干嘛？
_____________________________________________
2. 当开始下雨的时候，我正和朋友们在操场上打篮球。
_____________________________________________
_______________________________________________
3. 当我妈妈在做晚饭的时候，我在卧室做作业。
_____________________________________________
_______________________________________________
4. 当她下公交车时，我看到了她。
_____________________________________________
What were you doing at this moment last week
I was playing basketball with my friends in the playground when it started to rain.
I was doing my homework in the bedroom while my mother was cooking supper.
I saw her as/when/while she was getting off the bus.
Thank you!