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Unit 5 Nature’s Temper
(新人教)英语
八年级下册
Grammar Focus (4a-4d)
八年级英语备课组
Learning Objectives
结合例句识别when和while引导的时间状语从句，理解其表意功能，区分when和while的意义；
理解过去进行时的表意功能，分析句子结构特征，并通过与一般过去时的对比，加深对过去进行时的理解；
正确使用过去进行时及从属连词when和while连句、造句、补全语篇，并基于语法板块语篇的内容，准确描述过去某一时刻正在发生的动作；
了解龙卷风的相关知识以及应对措施，同时体会语篇中蕴含的“灾难无情人有情”的内涵。
通过本课时学习，我能够：
Review
中文 英文 中文 英文
做家务 减速，减弱
及时 脱落; 分开
警告sb.(不)做sth. 建议sb.做sth.
提醒某人某事 注意、关注
突然；猛地 做某事有困难
使某人意外 为…做准备
多花了5小时 发生事故/意外
在...时候 把...从... 挪走
发生, 举行 应急物资
do chores
in time
warn sb. (not) to do sth.
warn sb. about/of sth.
all of a sudden
take sb. by surprise
take five hours longer
at the time of
take place
come off
advise sb. to do sth.
pay attention to
slow down
have trouble (in) doing sth.
be prepared for
make preparations (for...)
get into an accident
move sth. off...
emergency supplies
What were people doing at the time of rainstorm
Lead in
What were people doing at the time of rainstorm
Lead in
She ______________________ in her bedroom.
He _____________ at the library.
was doing her homework
was reading
She ____________________ after work.
He _________________ from the supermarket.
was waiting for the bus
was walking home
Past continuous tense（过去进行时）
It shows an ongoing action in the past.
Read and think
Read the sentences. Underline the verbs which show an ongoing action in the past.
4a
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. What do they have in common
结构：was/were+V-ing
动词：多为延续性动词
延续性动词指动作可以延续一段时间，而不是瞬间结束。如：work、study、drive、eat等。
非延续性动词指动作极为短暂，瞬间结束。
如：start、begin、hit、jump、knock等。
Let's learn
Past continuous tense（过去进行时）
结构：was/were+V-ing
定义：
表示过去某一时刻或某段时间内正进行的动作
用法：
① 表示某一时刻正进行的行为，与特定的过去时间状语连用，聚焦具体时间点，常见的时间有：at 8 last night, at this time, at that time/moment 等。
e.g. What were you doing at 10 o’clock yesterday morning
② 表示动作在一段时间内持续进行，未完成；常用时间标志：from 8 to 10 yesterday morning, last winter；也可搭配while引导的时间状语从句
e.g. They were waiting for you from 8 to 10 yesterday morning.
过去进行时多用在叙事类文本中，起到提供背景和渲染氛围的作用，制造身临其境的效果。
动词：多为延续性动词
Let's learn
Past continuous tense（过去进行时）
以when引导的时间状语从句:
以while引导的时间状语从句:
What were your family doing when the typhoon hit
When my neighbour called, we were having dinner.
When we were singing, the teacher came in.
What were you doing while it was snowing heavily
While we were driving home, the strong winds started.
They were singing while we were dancing.
when: “当…的时候”, 既指时间点，又指时间段。
从句中动词可以是延续性动词，也可以是非延续性动词。
while: “在…的时候” “在…期间”
从句中动词必须是延续性动词。
(强调主从句的动作同时发生或主句动作发生在从句动作过程中)
Practice
Combine each pair of sentences using when or while.
4b
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.
While I was doing ... , the... .
When the power ... , my father... .
While Kate ... , her... .
While my ... , I ... .
While I was sleeping soundly, it rained... .
go out（火或灯光）熄灭
warn sb of... 警告某人…
rain cats and dogs 下倾盆大雨
Complete the passage with was, were, when, or while.
Practice
4c
was
When/While
were
When
were
抬头看
厚厚的乌云
beat against 拍打
hide from 躲避
互相, 彼此
Lead in
Let’s think and answer questions.
Think and share
Jenny’s father compare the tornado to an angry lion. Do you think a tornado is like an angry lion In what way are they alike
Yes, I think they are alike in some ways. Both are powerful and destructive, bringing great harm and fear to people and things around.
Why does the writer say “The tornado was scary, but it also brought everyone closer together.”
Because during the tornado, her family supported each other closely.
Later, after the tornado, people cared about each other’s safety and worked together to clear the streets. These acts brought everyone closer together.
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
Practice
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…
Before the tornado
During the tornado
After the tornado
How was the weather before the tornado hit
Where were your family
What did you do when the tornado came near
Were you afraid of it
What did the people in your neighbourhood say to each other
What did they do
Sample
A: Excuse me, Miss. What were you doing when the tornado hit
B: My family and I were hiding in a safe room.
A: That's good. What did you do while you were waiting there
B: Oh, while we were waiting, we tried to keep my little sister calm.
A: How did you do that
B: My dad gave her some chocolate. He told her we were hiding from an angry lion. That
worked well!
A: What a kind father! What was it like after the storm
B: When we stepped outside, the sun was shining!
A: What were people doing then
B: Everyone was asking each other if they were OK. Some were starting to clean the streets.
A: Oh, great! The tornado was scary, but it also brought people closer together.
B: That's right!
Lead in
What can we do to prepare for a tornado
Thinking
Before the tornado
During the tornado
After the tornado
pay close attention to weather changes
prepare a tornado safe room
stay calm and run to the safe room at once
comfort those who feel scared
check on one another and ask if everyone is safe
work together to clear up the neighbourhood
pack emergency supplies
make an emergency plan
stay with your family and don’t go outside alone until the tornado dies down
check for potential safety risks in the community
Exercise
用单词的适当形式填空。
What ________ you ________ (do) when the typhoon came
While my father ____________ (check) the weather, my mother was cooking.
They ________________ (not play) basketball at that time yesterday.
When I ________ (arrive), it was raining heavily.
She ____________ (sleep) while I was reading.
The wind ____________ (blow) strongly when we went out.
My sister __________________ (not watch) TV at 8 last night.
________ it ____________ (snow) when you got up this morning
At this time yesterday, I _____________ (read) the newspaper while Susan
____________ (play) the piano.
were doing
was checking
were not playing
arrived
was sleeping
was blowing
wasn't watching
Was snowing
was reading
was playing
Homework
Must do：
Choose to do：
1. Summarize the key grammar points of this lesson by making a mind map.
2. Write a short passage (about 50 words). Talk about what you and your family were doing at a certain time yesterday.Use at least 3 past continuous sentences and include when or while.
Interview a family member or neighbor. Ask about a natural disaster or an accident they experienced.Write down the interview in English (at least 5 sentences) and share it in the next class.

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