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(共30张PPT)
Section A 4a-4d
Unit 5
Nature’s Temper
让教学更有效
Learning Objectives
To observe and summarize the structure and basic usage of the Past Continuous tense, understand that it is used to describe an action in progress at a specific time or during a period in the past; comprehend and distinguish the different uses of when and while when introducing adverbial clauses of time.
To connect two simultaneous actions with when or while and choose the appropriate conjunction according to the context; complete the grammar exercises 4a–4c in the textbook and use the target grammar accurately in real situations.
To simulate a reporter interview based on real-life situations,; reflect on emergency response methods to enhance safety awareness. Additionally, let students experience the themes of "family mutual support" and "community warmth" by reading the text.
Last week, Lisa and her family met a terrible typhoon on the way home. What happened next Let’s watch!
Watch and Say
What happened to the girl and her family next
Her family and she were driving home when the strong winds started. And It was raining hard while they were driving back.
What were other people doing during the natural disasters
34
Read and Think
What were you doing while it was snowing heavily I was travelling on the train then.
What were your family doing when the typhoon hit My children and I were reading together.
When my neighbour called, my family were having dinner. We were driving home when the strong winds started. While we were driving home, the strong winds started. It was raining hard while we were driving back. Read the sentences. Underline the verbs which show an ongoing action in the past.
过去进行时
Past Progressive Tense
What is Past Progressive Tense
4a
Look and Learn
过去进行时表示过去某一时刻或某段时间正在进行的动作。过去进行时由“was / were + 动词-ing形式”构成。
过去进行时
Past Progressive Tense
时间标志词：
at this/that time yesterday, at 9:00 yesterday morning, all night, from 8 to 10 yesterday morning等; 或以when, while 引导的时间状语从句。
Look and Learn
（1）肯定句：主语 + was/were + v.-ing
eg: She was watching TV at 9 last night. 他昨晚上九点正在看电视。
（2）否定句：主语 + was/were + not + v.-ing
eg: we were not playing computer games yesterday afternoon.
我们昨天下午并没有在打球。
（3）一般疑问句：Was/Were + 主语 + v.-ing？
eg: Was he doing his homework at this time last night
他昨晚这个时候正在做家庭作业吗？
（4）特殊疑问句：疑问词 + was/were + 主语 + v.-ing？
eg: What was she doing when the typhoon came
当台风来临时，她正在做什么？
过去进行时基本结构
Look and Learn
1.一般情况直接加-ing： play→playing, read→reading
2.以不发音e结尾，去e加-ing： write→writing, make→making
3.一辅重闭作尾巴(辅+元+辅)，双写尾字母加-ing：
run→running, sit→sitting
4.以ie结尾，变ie为y加-ing： tie→tying, die→dying
现在分词(v.-ing )变化规则
Look and Practice
按规则分类（把方框中的单词的“ing”形式填在对应的横线上）。
live, run, eat, draw, put, come, love, begin, fly, die, forget, skate, win, hope, stand, lie
1.直接 + ing：__________________________________________________
2.去e + ing：__________________________________________________
3.双写尾字母 + ing：____________________________________________
4. ie 变 y+ing：__________________________________________________
living
running
eating
drawing
putting
coming
loving
beginning
flying
skating
forgetting
winning
hoping
standing
dying
lying
Look and Think
1.We were driving home when the strong winds started.
2.While we were driving home, the strong winds started.
3.It was raining hard while we were driving back.
when和while引导的时间状语从句中谓语动词有什么区别？
Look and Learn
when表示“当……的时候”，引导的时间状语从句可以表示一个时间点, 也可以表示一个时间段。从句中可以用瞬间性动词，也可以用延续性动词。从句中的动作既可和主句的动作同时发生，又可在主句的动作之前或之后发生。
　
I was doing my homework when my father came back.
　我正在写作业，这时爸爸回来了。　
He lost his wallet when he was walking in the park.
　　　当他在公园散步时，他丢了钱包。
When
Look and Learn
While
while表示“在……的时候”引导的时间状语从句常指一个时间段，从句中的动词为延续性动词。while强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。
While he was sleeping, the telephone rang.
他正在睡觉的时候，电话响了。
My father was reading newspaper while my mother was cooking.
　　爸爸在看报纸，妈妈在做饭。
　
Look and Learn
延续性动词和非延续性动词
延续性动词表示可以持续一段时间的动作或状态。
如：learn, work, study, drink, eat, run, live 等。
非延续性动词表示瞬间完成、不能持续的动作，又叫短暂性动词。
如：start, begin, hit, borrow, die, buy, finish, leave 等。
When和While
的区别
引导的时间状语从句 从句中的谓语动词
when
while
指时间段，也可以指时间点
延续性动词／瞬间性动词
指一段时间
延续性动词
注意：①如果主句和从句都是延续性动作又是同时发生，时间状语从句多用While引导。
While she was sleeping, I was I was doing my homework.
　　　②when强调主句和从句的动作同时发生或一前一后发生，while则强调动作同时发
　　　　生。when后面通常接一般过去时的从句，而while后接过去进行时的句子。
Look and Learn
We've also welcomed Haitao to our class. He'd like to share his story about the typhoon with us.
Can you help him
Here are some sentences about Haitao's experience during the typhoon. Combine each pair of sentences using when or while.
1. I did my homework. The typhoon landed on the coast.
___________________________________________________________________
2. The power went out. My father and I made dinner.
___________________________________________________________________
3. Kate wrote a letter. Her brother called to warn her of the storm.
___________________________________________________________________
4. My parents packed the supplies. I moved our things off the floor.
__________________________________________________________________________
5.I slept soundly. It rained cats and dogs.
___________________________________________________________
I was doing my homework when the typhoon landed on the coast.
The power went out while my father and I were making dinner.
Kate was writing a letter when her brother called to warn her of the storm.
My parents were packing the supplies while I was moving our things off the floor.
I was sleeping soundly while it was raining cats and dogs.
/ pa (r)/电力供应，能量
提醒她注意这场风暴
/ sa ndli/酣畅地
英语谚语，意为“下倾盆大雨”。
Read and Combine　　
Read and Retell　　
I also met a terrible typhoon last week. At first, the weather was fine. I _________ (do) my homework with my best friend Kate when the typhoon ________ (land) on the coast. Soon, the wind blew heavily and it ________ (rain) cats and dogs.
At that moment, the power ________ (go) out. My parents ___________ (pack) the supplies while I __________ (move) their things off the floor. Just then, Kate's phone rang. Her brother ________ (call) to warn her of the storm. Although it __________ (rain) hard all night, I ______ (sleep) soundly because I was very tired.
was doing
landed
rained
went
were packing
was moving
called
was raining
slept
Suppose you are Haitao. Fill in the blanks and retell Haitao's story.
Watch and Say
What is this video about
It's about tornado.
/t ne d / 龙卷风
Have you ever experienced a tornado What were people doing when a tornado came
Let's read my friend's story.
Read and Complete
Read the story and complete the passage with was, were, when, or while.
When Jenny looked up, thick black clouds were forming
in the sky, and the rain ______ beating against their roof.
“Quick, this way,” said Dad.
The family ran to the safe room at once. ____________
they were waiting, Jenny’s little sister started to cry. Dad gave her some chocolate and told her that they ______ hiding from an angry lion. Soon, she was laughing again.
At last, the storm passed. ______ they stepped outside, they found the sun shining. People were asking one another if they were safe while some ______ starting to clear the streets. Jenny smiled. The tornado was scary, but it also brought everyone closer together.
was
When / While
were
When
were
/bi t/敲打，打败
/ha d/躲藏，隐蔽
Think and Talk
1. Why did Jenny's Dad tell her little sister they were hiding from an angry lion, instead of a
real tornado What is Jenny's father like
Because he wanted to make his little daughter not scared. A tornado is too scary for a kid, but a lion in a story is easier for her to accept. Her Dad is kind, smart and loving. He loves his kid and knows how to take care of her. /...
2. The story says "The tornado was scary, but it also brought everyone closer together." What
does this sentence mean
It means that even though the tornado was a very scary disaster, it made the people in the neighborhood care more about each other and grow closer./...
Interview and
Imagine that you are a reporter. Interview a member of Jenny’s family and find out what he or she was doing around the time of the tornado.
4d
A: What were you doing when the tornado hit
B: My family and I were hiding in a safe room.
A: What were you doing while you were waiting there
B: Oh, while I ...
Read and Learn
look up 抬头看;向上看;查阅
Language Points
1. When Jenny looked up, thick black clouds were forming in the sky, and the rain was
beating against their roof.
珍妮抬头望去，天空中乌云密布，雨点正噼里啪啦地敲打着他们的屋顶。
beat against （雨、风、浪等）拍打;敲打;撞击
2. Dad gave her some chocolate and told her that they were hiding from an angry lion.
爸爸给了她一些巧克力，告诉她他们正在躲避一头发怒的狮子。
hide from sb./sth. 躲避某人/某物
3. People were asking one another if they were safe while some were starting to clear the
streets.
人们互相询问是否安全，与此同时，有些人已经开始清理街道。
one another= each other 彼此,互相
Exercises
Look and Practice
单项选择。
1. She __________ when the UFO arrived.
A. was shopping B. shopped C. shops
2. __________ my father was watching TV, I was drawing.
A. When B. While C. Before
3. I was reading __________ he knocked at the door.
A. while B. when C. since
4. What __________ you __________ at nine yesterday
morning
A. did; do B. are; doing C. were; doing

Look and Practice
1. I _______________ (watch) TV at 8:00 last night.
2. They _____________ (play) basketball when it rained.
3. My mom ____________ (cook) while my dad ____________ (read) newspapers.
4. —What _______ you _______ (do) at this time yesterday
—I ____________ (do) my homework.
5. The students __________________ (not talk) when the teacher came in.
用所给动词的适当形式填空。
was watching
were playing
was cooking
was reading
were
doing
was doing
were not talking
1. __________ I was walking home, it began to snow.
2. He was reading a book __________ the phone rang.
3. __________ she was listening to music, her brother came.
4. We were sleeping __________ the earthquake happened.
5. __________ they were playing games, I was doing housework.
用 when 或 while 填空。
Look and Practice
While
when
While
when
While
Summary
Structure
肯：was/were + v-ing
疑问: Was/Were+主+v-ing...
表示过去某个时刻正在进行的动作
表示过去某个时间段正在进行的动作
when + 非延续性动词/延续性动词
(一般过去时/过去进行时)
while + 延续性动词 (过去进行时)
Past Progressive Tense
Usage
when while
否定：was/were not+ v-ing
Teacher’s words
Don’t let your ______ control you. Try to calm down.
In the dark, family care is the brightest light. In danger, neighbors’ help is the strongest support.
Basic(必做)
复习过去进行时的结构、用法和when/while的区别。
Improving(选做)
用 3 个过去进行时句子描述自己昨天某时刻正在做的事。
Extend(选做)
续写Jenny的故事：“After the tornado, what were people doing ”
Homework
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