Unit 8 Natural disasters>grammar（16张ppt)

课件16张PPT。Unit 8Natural disastersgrammarbreak
break down
because of vi. 损坏；打破
出故障；坏掉
由于；因为Words and expression 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
at Yale.
(b) They were building a dam last
winter.Past continuous tense 2. 过去进行时的句式
(1) 基本结构：was / were + verb-ing
(2) 否定式：was / were not + verb-ing
was not = wasn’t were not = weren’tI was doing some shopping.
People were running wildly.I was not reading.
People were not running wildly. (3) 疑问句：将 was / were 调到主语前
结构为:Was/Were+主语+verb-ing?
回答：Yes, 主语+was/were.
No, 主语+ was not/wasn’t.
were not/weren’t.Was he running?
Yes, he was. / No, he wasn’t.Were they running?
Yes, they were. / No, they weren’t.It was snowing this morning. Do you know what Sandy was doing early this morning? What happened to her? Complete the conversation below.A snowstorm hit Sunshine TownMr. 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 readingwerewas havingdoingMillie: 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 ringingWerewaitingwas walkingPast continuous tense
with ‘while’ , ‘when’ and ‘as’
1.“主短从长 ”型：when /while/as
When /while/as I was waiting for
the bus,I met her.
2.“主长从短”型：when
I was walking in the street when he
called me.
3.“主长从长”型：while
They were rowing boats while they
were climbing the hill.
Note :
短即为短暂性动词，用一般过去时
长即为延续性动词，用过去进行时
e.g.
When we got home, it was raining
yesterday morning.
It began to rain heavily while we
were having dinner.Playing in the snowLook at the picture on page 98, and describe what the students were doing when Simon arrived. Use the words in brackets to help you. ______ 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.Whenarrivedwas gettingWhen/While/As was building was takingfellwhen/while/aswas making4. Peter _____________(hide) behind
a tree ______ a snowball ___
(hit) him.
5. ________________ Millie and her
classmates _____________ (play) in
the snow, Andy _____ (run) towards
them.was hidingwhenWhen/While/Aswere playinghitran翻译：1.昨晚八点时灯还亮着时是因为教师们正在开会。
The lights were still at 8 a.m. last night
the teacher a meeting.
2.迈克正在打电脑游戏时，他的妈妈走进了房间。
mike a computer game his
mother into his room.
3.当我第一次看见他时，他正在喝一盒牛奶。
I first him, he a carton of milk.
4.当我在堆雪人时候，杰克用双手捂住了我的眼睛。
As I was a snowman,Jack my eyes
his hands.