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Unit 5 Nature’s Tepmer
SectionnA (4a-4d)
人教版 八年级下册
能够结合例句识别when和while引导的时间状语从句，理解其表意功能；能够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。（学习理解）
01
能够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。（迁移创新）
03
能够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。（应用实践）
02
教学目标
学习重、难点
1. 学习重点
能够快速阅读对话，了解大意；能精读对话。梳理两位主人公各自的家庭在台风发生前后所做的事情。能够在语境中理解when和while 引导的时间状语从句以及过去进行时的表意功能。
2.学习难点
能够在语境中理解when和while 引导的时间状语从句以及过去进行时的表意功能。
01
lead-in
Let’s watch and learn.
03
Presentation
Let’s look and say!
It is 6 o'clock now.
Paul is at home.
He is watching TV.
At 4 o'clock he wasn't at home.
He was at the sports club.
He was swimming in the pool.
He wasn't watching TV.
Let’s look and say!
Jack was reading when his phone rang.
When do we usually use the past continuous tense
Which part should we pay attention to in each sentence
What are the proper forms of verbs
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. Q: What are the forms of verbs in the past continuous tense
was travelling
was reading
were having
were
driving
be doing
was
were
Let’s learn and summarize!
Let’s learn and summarize!
用于过去进行时和一般过去时的动词分别有什么特点？
We were driving home from our relatives’ house when the strong winds started.
It was raining hard while we were driving back.
We almost got into an accident when a truck nearly hit us.
Yes, but when we got home later, we found water everywhere.
用于过去进行时的动词多是延续性动词；用于一般过去时的动词多为表示短暂动作的动词。
Let’s learn and summarize!
含有when或while引导的时间状语从句的主句是否需要用过去进行时？
We were driving home from our relatives’ house when the strong winds started.
It was raining hard while we were driving back.
We almost got into an accident when a truck nearly hit us.
Yes, but when we got home later, we found water everywhere.
when或while引导的状语从句，其主句可以是过去进行时，也可以是一般过去时，需要依照具体语境而定。
过去进行时的用法：
Let’s learn and summarize!
We were driving home from our relatives’ house when the strong winds started.
It was raining hard while we were driving back.
We almost got into an accident when a truck nearly hit us.
Yes, but when we got home later, we found water everywhere.
表示过去某一时刻或某一段时间正在进行的动作 (at）
表示一个动作发生时，另一个过去的动作正在进行(when)
表示两个过去的动作同时进行，这时可用while连接
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。
过去进行时常见时间状语：
Let’s learn and summarize!
We were driving home from our relatives’ house when the strong winds started.
It was raining hard while we were driving back.
We almost got into an accident when a truck nearly hit us.
Yes, but when we got home later, we found water everywhere.
过去的某个时间：at 9 o'clock last night; at that time
when引导的时间状语从句：when I saw it
while引导的时间状语从句： while she was sleeping ...
Learn about the structure of the past continuous tense
基本结构
He was reading a book at 9 last night. 他昨晚上九点正在看书。
He was not reading a book at 9 last night. 他昨晚上九点并没有看书。
Was he reading a book at 9 last night 他昨晚上九点正在看书吗？
What was he doing at 9 last night？他昨晚上九点正在做什么
（1）肯定句：主语 + was/were + v.-ing
（2）否定句：主语 + was/were + not + v.-ing
（3）一般疑问句：Was/Were + 主语 + v.-ing？
（4）特殊疑问句：疑问词 + was/were + 主语 + v.-ing？
Lucy ______ (break) her arm last week. It _________ (happen) when she __________ (paint) her room. She _____ (fall) off the ladder.
broke
Look at the pictures and put the verbs in the correct form.
Yesterday Sue ___________ (walk) along the road when she ____ (meet) James. He ________ (go) to the station to catch a train and he ___________ (carry) a bag. They ______ (stop) to talk for a few minutes.
happened
was painting
fell
was walking
met
was going
was carrying
stopped
Learn the adverbial clauses of time guided by "when" and "while"
以when和while引导的时间状语从句
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。
如：work、study、drink、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。
Learn the usage of the past continuous tense and past tense.
时态 核心含义 动作特点 关键词
过去进行时 过去某时正在进行的动作 持续、未完成 while, at this time yesterday...
一般过去时 过去某时发生的动作 短暂、已完成 yesterday, last week...
易混点：过去进行时vs一般过去时
易混点：过去进行时vs一般过去时
判断时态和动词性质：1.When the fire started（ ）, we were having dinner（ ）.
2.The teacher came in（ ）while we were talking（ ）.
判断时态及动作是否已经完成：
3.He read a book yesterday.（ ）
4.He was reading a book at 8 yesterday.（ ）
一般过去时，短暂
过去进行时，持续
一般过去时，短暂
过去进行时，持续
一般过去时，读完了，已完成
过去进行时，8点正在读，未完成
Learn the usage of the conjunctions “when” and “while”.
用法
①when表示“当……的时候”。when从句中既可用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中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。如：
Mary was having dinner when I saw her.
The boy was still sleeping when his mother got home yesterday morning.
②while表示“在……的时候”、“在……期间”。while从句中必须是表示动作或状态的延续性动词。它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。如：
The weather was fine while we were in Beijing.
While my parents were packing the supplies, I was moving our things off the floor.
While the boys were playing football, it rained.
While we were driving home, the strong winds started.
③如果主句的动作在从句的动作过程中发生，从句常用进行时。如:
The usage of the conjunctions “when” and “while”.
when vs. while
when + 短暂动作 (一般过去时)
when + 持续动作 (过去进行时)
while + 持续动作 (过去进行时)
1.He was watch TV when the doorbell rang. ( )
2.Were you play football at 4 yesterday afternoon ( )
3.While we were walking, we see a beautiful bird. ( )
4.When the rain started, we were having a picnic. ( )
5.They were not go to school while it was snowing. ( )
×
×
×
√
×
He was watching TV when the doorbell rang.
Were you playing football at 4 yesterday afternoon
While we were walking, we saw a beautiful bird.
They were not going to school while it was snowing.
判断句子正误，对的打√，错的打×并改正
Fill in the blanks with the correct forms.
1.I ___________ (walk) to school when I saw a cat in the tree.
2._______ (be) he _______ (watch) TV at 8 last night
3.They ______________ (not play) basketball while we were playing football.
4.What _______ you _______ (do) at this time yesterday
5.The wind _________ (blow) hard while we ___________ (stay) at home.
6.She ____________ (dance) when the music stopped.
7.We ____________ (have) lunch when the phone rang.
8._______ they _______ (run) on the playground at 4 yesterday afternoon
9.He _______________ (not read) a book while his sister was drawing.
10.The snow ______________ (fall) when we went out.
was walking
Was watching
were not playing
were doing
was blowing
were staying
was dancing
were having
Were running
was not reading
was falling
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.
___________________________________________________________
S. 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.
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.
Complete the passage with was, were, when, or while.
4c
was
When / While
were
When
were
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 ...
My family and I were hiding in a safe room.
Excuse me, Miss. What were you doing when the tornado hit
Summary
Unit 5 Nature’s Temper (Section A Grammar Focus)
Past Continuous Tense
结构
用法
when vs. while
主语+was/were + v-ing
否定: 主语+was/were not+ 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 + 短暂动作 (一般过去时)
when + 持续动作 (过去进行时)
while + 持续动作 (过去进行时)
at 8:00 last night, at that time
from 7 to 9 yesterday
特殊疑问: What+Was/Were+主语+ v-ing...
疑问: Was/Were+主语+ v-ing...
1. We ___________ (drive) home when the strong winds started.
2. —Cindy, my sunglasses are on the floor and they are broken. What happened
—Sorry, dear. I don’t know. I ___________ (cook) in the kitchen then.
3. He ____________ (walk) along the street when a strong wind ______ (blow) his hat away.
4. —Did you watch the football match on TV last night
—I wanted to, but my mother ____________ (watch) her favorite TV program.
5. At this time yesterday, I _____________ (read) the newspaper while Susan
____________ (play) the piano.
were driving
用单词的适当形式填空。
was cooking
was walking
blew
was watching
was reading
was playing
1. We stored food and water before the typhoon ________ (start).
2. We were driving home from our ________ (relative) house.
3. Mom warned me not ________ (touch) the stove.
4. This river ________ (supply) water for three villages.
5. He ____________ (walk) along the street when a strong wind ______ (blow) his hat away.
6. He ______ (break) his arm when he fell off the bike during the rainstorm.
7. I ___________ (sleep) when the alarm clock went off this morning.
8. It was raining hard while we ____________ (drive) back.
started
用单词的适当形式填空。
relatives’
to touch
broke
supplies
was walking
blew
was sleeping
were driving
1. Memorize the new words and phrases.
2. Practice the conversations with your partner using the
sentence patterns we have learned .
3. Finish the exercises.
Homework
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人教版八年级下册 Unit 5 Section A（4a-4d）教学设计
一、基本信息
学科：英语
年级：八年级下册
课题：Unit 5 Nature’s Temper Section A（4a-4d）
课时：1 课时（40分钟）
课型：语法课
二、教学目标
（一）学习理解
能识别when/while引导的时间状语从句，理解其表意功能。
掌握过去进行时的结构、用法，能对比区分过去进行时与一般过去时。
（二）应用实践
正确运用过去进行时、when/while 完成造句、连句、语篇填空。
能描述过去某一时刻 / 时段正在发生的动作。
（三）迁移创新
了解龙卷风、台风等灾害常识及应对方法。
体会 “灾难无情人有情” 的情感内涵，培养互助意识。
三、教学重难点
重点：过去进行时的结构与用法；when/while 引导时间状语从句的用法。
难点：语境中区分 when/while；过去进行时与一般过去时的混合使用。
四、教学准备
多媒体课件、情景对话卡片、练习题单
五、教学过程
Step 1 热身导入（5 分钟）
播放短视频：展示台风 / 龙卷风天气场景，提问：
What was the weather like
What were you doing when the storm came
情景对话：
A: I called you last night but you didn’t answer.
B: Sorry, I was taking a shower when you called.
引出课题：过去进行时 & when/while 引导的时间状语从句。
Step 2 新知呈现（10 分钟）
过去进行时
结构：主语 + was/were + doing
用法：过去某时刻 / 时段正在进行的动作。
时间标志：at that time, at 8:00 last night, when...
when vs while
when：可接短暂 / 延续动作，可用于一般过去时 / 过去进行时。
while：只接延续性动作，常用过去进行时。
例句对比：
He was reading when the phone rang.
While we were driving, it started to rain.
Step 3 语法精讲与练习（15 分钟）
1. 4a 划出过去进行时动词
学生独立完成，核对答案，总结 be 动词搭配：was/were + doing。
2. 时态对比
过去进行时：动作持续、未完成
一般过去时：动作短暂、已完成
3. 纠错练习
判断正误并改正：
He was watch TV when the doorbell rang. (×) → watching
While we were walking, we see a bird. (×) → saw
4. 4b 用 when/while 合并句子
教师示范 1 题，学生独立完成，小组核对。
Step 4 综合运用（10 分钟）
4c 语篇填空用 was/were/when/while 完成短文，巩固语境运用。
4d 情景对话角色扮演：记者采访 Jenny 家人，谈论龙卷风发生时正在做什么。
A: What were you doing when the tornado hit
B: I was...
Step 5 课堂小结（3 分钟）
过去进行时：结构、用法、时间标志。
when/while 用法区别。
过去进行时 vs 一般过去时。
Step 6 作业布置（2 分钟）
记忆本课单词与短语。
用 5 个过去进行时句子描述昨天同一时间你在做什么。
完成课后练习题。
六、板书设计
Unit 5 Section A（4a-4d）
一、过去进行时
结构：主语 + was/were + doing用法：过去某时正在进行
二、when & while
when + 短暂 / 延续动作while + 延续动作（进行时）
三、对比
过去进行时：持续一般过去时：完成
七、教学反思
关注学生对 when/while 的区分是否清晰，可增加更多情景练习。
鼓励学生在真实语境中运用时态，提升口语表达能力。
结合灾害主题，渗透情感教育，增强课堂温度。/ 让教学更有效 精品试卷 | 英语学科
一、用所给词的适当形式填空
I ____________ (walk) home when it began to rain.
They ____________ (not play) at that time yesterday.
What ______ you ______ (do) when the typhoon came
4. While my mom ____________ (cook), I was doing my homework.
The wind ______ (blow) hard while we ______ (drive) back.
6. He ______ (read) a book when the phone ______ (ring).
二、单项选择
My brother was sleeping ______ the storm came.
A. when B. while C. since D. after
2. ______ I was walking home, it started to snow.
A. When B. While C. Before D. since
3. They ______ football at 4 yesterday afternoon.
A. played B. were playing C. play D. am playing
4. She ______ her homework when the light went out.
A. did B. is doing C. was doing D. does
5. While we ______, the teacher came in.
A. talked B. were talking C. talk D. are talking
三、用 when/while 填空
1. ______ the rain started, we were having a picnic.
2. I was watching TV ______ my father was reading.
3. ______ she arrived, I was cleaning the room.
4. They were waiting ______ we were preparing supplies.
四、句型合并（用 when/while）
1. I was doing my homework. The typhoon landed.
2. She was drawing. Her sister called her.
3. He was reading. It was raining.
五、短文填空（用 was/were/when/while）
When the storm came, it ______ raining heavily.______ we were running home, I lost my umbrella.My family ______ preparing dinner ______ I got home.______ we looked outside, the trees ______ moving in the wind.
八下Unit5 Nature’s Temper Section A (4a- 4d) 课堂练习参考答案：
一、适当形式填空
was walking 2. were not playing 3. were; doing 4. was cooking 2. was blowing; were driving 6. was reading; rang
二、单项选择 1. A 2. B 3. B 4. C 5. B
三、when/while 填空 1. When 2. while 3. When 4. while
四、句型合并 1. I was doing my homework when the typhoon landed. 2. She was drawing when her sister called her. 3. He was reading while it was raining.
五、短文填空 was; While; were; when; When; were

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