Unit 5 Nature's Temper Section A Grammar (4a-4c)课件(共21张PPT,含内嵌视频) 2025-2026学年人教版(2024)八年级下册

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Unit 5 Nature's Temper Section A Grammar (4a-4c)课件(共21张PPT,含内嵌视频) 2025-2026学年人教版(2024)八年级下册

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Section A Grammar (4a~4c)
Nature’s Temper
Unit 5
Learning aims
能掌握过去进行时的基本结构和用法
能在过去进行时正确区分使用when和while
Lead in
Watch and say
What happened to the girl and her family next?
Activity 1
Learn to use past continuous tense
案件背景
伦敦贝克街 221B 号,晚上 9 点。
一位女士匆忙冲进来:“侦探!昨晚 8 点到 9 点之间,有人偷走了我的钻石项链!家里有 4 个人,我需要知道谁在说谎!”
福尔摩斯放下烟斗:“华生,我们需要调查 每个人昨晚 8 点正在做什么。”
Look into the scene.
You are Sherlock Holmes.
任务一:询问嫌疑人(发现结构:was/were + doing)
华生记录下了每个人的回答:
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}嫌疑人
回答
管家
I?was cleaning?the living room.
厨师
I was cooking dinner.
女儿
I was doing my homework.
司机
I was sleeping in the car.
你的任务: 观察这些句子,回答以下问题:
1 每个句子的动词由哪两部分组成?
→ ______ + ______
2 如果换成“我们”或“他们”在做什么,was 应该变成什么?
→ We ______ cleaning. / They ______ sleeping.
3 如果厨师想说“我没有在做饭”,应该怎么说?
→ I ______ not cooking.
was
doing
were
were
was
你自己总结的规律①:
过去进行时 = _________ + ______
主语是 I / He / She / It → 用 ______
主语是 You / We / They → 用 ______
否定:在 was/were 后面加 ______
was/were
doing
was
were
not
任务二:审讯时间点(发现用法①:过去具体时刻正在做)
问:“你们怎么证明自己?”
时间线索:
盗窃发生在 昨晚 8:15 左右。
每个人的回答需要精确到那个时间点。
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}嫌疑人
回答
管家
At 8:15 yesterday, I was polishing the silver.
厨师
I was cutting vegetables at that time.
女儿
At 8:15 yesterday, I was texting my friend.
司机
I was fixing the engine at 8:15 yesterday.
你的任务: 观察时间词的特点:
1 这些句子都提到了什么?
→ 具体的 ______
2 这种时态告诉我们动作在那一刻是 ______(已完成 / 正在进行中)。
时间点
你自己总结的规律②:
过去进行时用来表示:在过去某个 ______ 时间点,动作正在 ______。
常见时间词:at 8 pm yesterday, at that time, this time last night.
具体
进行
Activity 2
Use when and while correctly with past continuous tense
任务三:分析不在场证明(发现 when + 短动作打断长动作)
你发现,有人的证词里出现了 突然发生的事件:
厨师:
“I was walking to the kitchen when I heard a strange noise.”
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}动作类型
时态
例子
长动作
was walking
段动作
heard
你的任务:填写表格
(背景,持续)
(突然,打断)
过去进行时
一般过去时
你的发现: 哪个词连接了长动作和短动作?
→ ______
when
你自己总结的规律:
长动作(_____________时) + when + 短动作(__________时)
意思:在长动作进行过程中,______发生了短动作。
过去进行
一般过去
突然
任务四:调查两个同时发生的事件(发现 while + 两个进行时)
你对比了两组同时发生的事情:
司机:
While I was driving, they were sleeping in the back.
你的任务: 观察句子的特点:
连接两个动作的词是 ______。
两个动作用的都是 ______________ 时。
这两个动作是 ______(先后发生 / 同时进行)。
while
过去进行
你自己总结的规律:
过去进行时(动作 A),______ + 过去进行时(动作 B)
表示两个动作在过去的同一时间 ______ 进行。
while
同时
任务五:破解谎言(发现进行时 vs 一般过去时的区别)
福尔摩斯说:“真正的侦探要能看出谁在说谎!”
你的任务: 回答下面哪个嫌疑人可能在说谎?
厨师说:“I was cooking dinner at 8:15.”(调查发现炉子是冷的)
司机说:“I fixed the car at 8:15.”(但修车需要 2 小时)
你的分析:
厨师的句子是 ___________ 时,意味着动作 ___________,但炉子冷说明他没在做。
司机的句子是 ___________时,意味着动作 ___________了,但 8:15 这个时间点说“修完了”很奇怪。
过去进行时
一般过去时
正在进行
完成
你自己总结的规律:
一般过去时强调动作 ______ 了。
过去进行时强调动作正在 ___________,不一定完成。
正在进行
完成
最终案件报告(知识总结)
请你用一句话完成每个任务的核心发现:
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}任务
你发现的规律
任务一
过去进行时结构 = __________ + ______
was 配 ______ 数,were 配 ______ 数
任务二
用于过去 ______ 时间点正在做的动作
任务三
when + 短动作(________时)打断长动作(________时)
任务四
while 连接两个 ______ 进行的动作,都用 _________ 时
任务五
一般过去时动作 ______ 了;过去进行时动作正在 ______
was/were
doing


具体
一般过去
过去进行

过去进行
进行
完成
结案:真相大白
那个说‘I fixed the car at 8:15’的司机最有嫌疑——因为 8:15 这个具体时间点,应该用过去进行时描述正在进行的动作,而不是一般过去时表示完成。他露出了破绽!
Exercise
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.
Combine each pair of sentences using when or while.
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.
go?out(火或灯光)熄灭
warn?sb.?of...?警告某人…?
4. My parents packed the supplies. I moved our things off the floor.
5. I slept soundly. It rained cats and dogs.
While?my?parents?were?packing?the?supplies,?I?was?moving?our things?off?the?floor.
When?I?slept?soundly,?it?was?raining?cats?and?dogs.?
rain?cats?and?dogs?下倾盆大雨
4b
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
While
When?
were
4c
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.
Acting
Pronunciation
Fluency
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…
4d
Summary
◆过去进行时
{5C22544A-7EE6-4342-B048-85BDC9FD1C3A}你发现的规律
过去进行时结构 = __________ + ______
was 配 ______ 数,were 配 ______ 数
用于过去 ______ 时间点正在做的动作
when + 短动作(________时)打断长动作(________时)
while 连接两个 ______ 进行的动作,都用 _________ 时
一般过去时动作 ______ 了;过去进行时动作正在 ______
was/were
doing


具体
一般过去
过去进行

过去进行
进行
完成
Homework
1. Write some sentences with past continuous tense with when and while about your family life yesterday night.
2. Finish the exercises.

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