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(共34张PPT)
Unit 5
Nature’s Temper
Section A
What happens during a natural disaster
4a-4d
PART. 01
Learning Objectives
思维品质
学习能力
文化意识
语言能力
教学目标
掌握过去进行时的结构与用法，准确描述过去正在进行的动作。区分when和while引导时间状语从句的逻辑差异。
了解不同文化中描述灾害、突发场景的语言习惯，感受人类应对突发事件的共情表达，增强跨文化语言理解。
掌握语法规则梳理、语境运用的策略，提升自主完成语法练习与情景对话的能力，培养时态运用的准确性。
通过分析过去动作的时间关联，提升逻辑判断与事件梳理能力，学会用时态清晰地表达过去场景的先后与同步关系。
笔顺
教学重难点
掌握过去进行时的结构，能准确区分when与while的用法。
能完成句子合并、语篇填空，并用过去进行时完成情景对话。
在真实语境中灵活选择when/while，准确表达过去动作的同步或先后关系。在情景对话中，用过去进行时连贯描述灾害等突发场景，提升语言的逻辑性与流畅性。
01
02
PART. 02
Lead-in
Watch a video and learn about the structure of the past continuous tense.
PART. 03
4a — 4d (Grammar Focus)
过去进行时
1. 过去进行时的构成：was/were+动词-ing
2. 动词-ing形式的变化规则
Presentation
一般情况直接加-ing look → looking、work → working
以不发音的字母 e 结尾：去 e 加 -ing take → taking、write → writing
以“辅音字母+元音字母+辅音字母”结尾的重读闭音节动词如果末尾只有一个辅音字母，要双写这个辅音字母，再加-ing shop → shopping、sit → sitting、plan → planning
以 ie 结尾的动词：变 ie 为 y 加-ing lie → lying、tie → tying、die → dying
注意：易错特殊情况（必记）
（1）单音节动词以 w、x、y 结尾（辅 + 元 + 辅）：不双写，直接加-ing
draw → drawing、fix → fixing
（2）非重读闭音节（辅 + 元 + 辅）：不双写，直接加 -ing
open → opening
3. 句式结构
（1）肯定句：主语 + was/were +动词-ing 形式+其他.
I was reading a book at 8:00 last night. 昨晚八点我正在看书。
（2）否定句：主语+ was/were + not +动词 -ing 形式+其他.
She wasn’t watching TV just now. 她刚才没在看电视。
Presentation
（3）一般疑问句及答语：Was/Were + 主语+动词 -ing 形式+其他
肯定回答：Yes，主语+was/were.
否定回答：No，主语+was/were not.
— Was he cooking when you came in 你进来的时候他在做饭吗？
— Yes, he was. / No, he wasn’t. 是的，他在。/ 不，他没有。
（4）特殊疑问句：特殊疑问句 + was/were +主语+doing +其他
回答需具体说明，不能用 Yes/No。
—What were you doing at that time 你那时在做什么？
—I was reading. 我在看书。
Presentation
4. 过去进行时的用法
（1）表示过去某一时刻正在发生的动作，或过去某一个阶段内一直在进行的动作，常用的时间状语有：at this/that time +过去时间、at ... o’clock + 过去时间、from ... to ... +过去时间、those days（那些日子）、just now（刚才；刚刚）
He was playing the piano at 5:00 yesterday afternoon. 昨天下午五点他正在弹钢琴。
They were working on the farm all day yesterday. 昨天一整天他们都在农场干活。
（2）表示一个过去的动作正在进行时，另一个过去的动作发生了，常与when, while引导的时间状语从句连用。
I was watching TV when my father came back. 我正在看电视，这时爸爸回来了。
While he was waiting for the bus, he read a book. 他在等公交车的时候看了一本书。
Presentation
when与while引导的时间状语从句
一、概述
when和while都可意为“当……时”，用来引导时间状语从句，表示主句动作发生的背景。从句可位于主句之前或之后，当位于主句之前时，与主句要用逗号分开。
延续性动词和非延续性动词：
延续性动词指动作可以延续一段时间，而不是瞬间结束。work、study、drink、eat等。
非延续性动词指动作极为短暂，瞬间结束。start、begin、hit、jump、knock等。
二、when 引导的时间状语从句
1. 表示主句动作发生的特定时间，既可指时间点，也可指时间段。
I was doing my homework when he came in. 他进来的时候，我正在写作业。
Presentation
2. when 引导的时间状语从句中的谓语动词可用延续性动词，也可用非延续性动词。从句的动作可与主句的动作同时发生，也可在主句动作之前或之后发生。
When the bus stopped, we got off quickly. 公交车停下时，我们迅速下了车。
He often listened to music when he worked. 他工作时经常听音乐。
3. 当主句为将来时或表示将来的意义时，从句要用一般现在时表示将来，即遵循“主将从现”的原则。
I will call you when I arrive in Beijing. 我到北京后会给你打电话。
We will go camping when the weather is fine tomorrow.
明天天气好的话，我们就去露营。
When he comes, please let me know. 他来的时候请告诉我一声。
Presentation
三、while 引导的时间状语从句
1. while引导时间状语从句时，从句的谓语动词必须为延续性动词，且常用进行时。
Please be quiet while I am teaching. 我在讲课的时候请安静。
2. 强调主句动作发生时，从句动作正在进行，此时，从句用进行时。
While she was doing her homework, the light went out. 她正在写作业的时候，灯灭了。
While we were walking home, it started to rain. 我们正走在回家路上时，天开始下雨了。
3. 强调主从句动作同时进行时，主从句通常都用进行时。
I was reading while my mother was cooking. 我在看书，妈妈在做饭。
They were singing while we were dancing. 他们在唱歌，我们在跳舞。
Presentation
四、when和while的核心区别
When he knocked at the door, I was sleeping. 他敲门时，我正在睡觉。
I was reading when the light went out. 我正在看书，这时灯突然灭了。
Tom was reading while Mary was drawing. 汤姆在看书，而玛丽在画画。
Presentation
情况 用 when 用 while
从句是瞬间动作 可以 不可以
从句是延续动作 可以 可以
表示 “这时突然” 可以 不可以
表示对比 “而……” 不可以 可以
Practice
4a Read the sentences. Underline the verbs which show an ongoing action in the past.
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. Practice
4b Combine each pair of sentences using when or while.
1. I did my homework. The typhoon landed on the coast.
I was doing my homework when the typhoon landed on the coast.
2. The power went out. My father and I made dinner.
The power went out while my father and I were making dinner.
3. Kate wrote a letter. Her brother called to warn her of the storm.
Kate was writing a letter when her brother called to warn her of the storm.
4. My parents packed the supplies. I moved our things off the floor.
While my parents were packing the supplies, I was moving our things off the floor.
5. I slept soundly. It rained cats and dogs.
I was sleeping soundly when it rained cats and dogs.
（火或灯光）熄灭
warn sb of... 警告某人……
下倾盆大雨
Practice
Each sentence has one mistake. Underline the mistake and write the correct sentence.
My mother was cooked lunch while I was helping my brother with his homework.
While it rained heavily outside, we were sit in the classroom reading storybooks.
When the earthquake happened, people run in all directions quickly.
I was waiting at the bus stop when I see my best friend passing by.
While we were clean the house, the power went out and everything became dark.
My mother was cooking lunch while I was helping my brother with his homework.
While it was raining heavily outside, we were sitting in the classroom reading storybooks.
When the earthquake happened, people ran in all directions quickly.
I was waiting at the bus stop when I saw my best friend passing by.
While we were cleaning the house, the power went out and everything became dark.
Practice
4c Complete the passage with was, were, when, or while.
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.
When Jenny looked up, thick black clouds were forming in the sky, and the rain _______ beating against their roof.
“Quick, this way,” said Dad.
was
were
While
When
were
互相，彼此
立刻，马上
抬头看
Production
4d 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.
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 ...
Production
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 was waiting, I started to tell stories to my little sister to make her not afraid.
Sample
4d 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.
PART. 04
Language Points
1. The power went out. 停电了。
power
①电力供应
Many houses lost power because of the heavy storm last night.
昨晚的强暴风雨导致许多房屋停电。
②能量；力量
The sun provides light and power for all living things on Earth.
太阳为地球上所有生物提供光和能量。
③驱动；推动
This new car is powered by clean energy instead of oil. 这辆新车由清洁能源驱动，而不是汽油。
④权力；职权
He is a man with great power in this big company. 他在这家大公司里是一个拥有很大职权的人。
2. When Jenny looked up, thick black clouds were forming in the sky, and the rain was beating against their roof.
当珍妮抬头看时，天空中正在形成厚厚的乌云，雨水敲打着他们的屋顶。
look up 抬头看；查阅
When you meet new words, you can look them up in the dictionary.
当你遇到生词时，可以在词典里查阅它们。
look after 照顾
We should learn to look after ourselves when our parents are busy.
父母忙碌时，我们应该学会照顾自己。
look around 环顾
He stood up and looked around the classroom to see who was late.
他站起来，环顾教室，看看谁迟到了。
look through 快速查看；浏览
I usually look through the news before I start to do my homework.
我通常在写作业前先浏览一下新闻。
look forward to 盼望
We are all looking forward to the summer holiday and a happy trip.
我们都在盼望暑假和一次愉快的旅行。
look for 寻找
I’m looking for my key everywhere, but I still can’t find it.
我正在到处寻找钥匙，但还是找不到。
look like 看起来像
The little girl looks like her mother, and they both have big eyes.
这个小女孩长得像她妈妈，她们都有大眼睛。
look over 查看；检查
The doctor looked over the patient carefully and asked about his illness.
医生仔细检查了病人，并询问了他的病情。
look out 小心
Look out! A car is coming quickly towards you. 小心！一辆车正快速向你开来。
3. People were asking one another if they were safe while some were starting to clear the streets.
当一些人开始清理街道时，人们在互相询问是否安全。
if 在此引导宾语从句（宾语从句应用陈述语序），常用于ask、know、find out、wonder等动词（短语）之后。
I want to know if he will come to the party. 我想知道他是否会来参加派对。
Could you tell me if there is a hospital near here 你能告诉我这附近是否有医院吗？
PART. 05
Exercises
Exercise—连词成句
1. his way, he, to, made, the, shelter, when, earthquake, the, started (.)
__________________________________________________________________________
2. important, for, it, is, us, to, respect, cultures, different, when, crossing, borders (.)
__________________________________________________________________________
3. the game, started, while, was, I, still, on the way, to the stadium.
__________________________________________________________________________
4. rang, I, my homework, while the telephone, was doing (.)
__________________________________________________________________________
5. out, the, went, elevator, lights, riding, while, Jeremy, was, the (.)
__________________________________________________________________________
It is important for us to respect different cultures when crossing borders.
The game started while I was still on the way to the stadium.
I was doing my homework while the telephone rang.
He made his way to the shelter when the earthquake started.
The lights went out while Jeremy was riding the elevator.
Exercise—用所给词的适当形式填空
When Mr Wu walked into the classroom, the students ____________ (share) their travel experiences.
The doctor wrote down notes carefully while _________ (check) the little girl’s throat.
My sister sat by the window because the sunshine ____________ (shine) through the window.
My father didn’t answer my call at seven yesterday evening because he _________ (fix) my broken bike in the yard.
The artist ____________ (draw) a sketch of the mountain when we met him yesterday.
All of a sudden, my mother found that a nail ________ (stick) out of the wooden board.
checking
was shining
was fixing
was drawing
was sticking
were sharing
PART. 06
Summary
添加标题
ADD THE TITLE HERE
过去进行时
过去进行时的构成
动词-ing形式的变化规则
句式结构
过去进行时的用法
添加标题
ADD THE TITLE HERE
when与while引导的时间状语从句
概述
when引导的时间状语从句
while引导的时间状语从句
when和while的核心区别
PART. 07
Homework
Review what we learned today.
Prepare for the next lesson.
Homework
THANKS
See you next class!

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