Unit 5 Section A 4a- 4d课件 2025-2026学年人教版英语八年级下册

该初中英语课件聚焦过去进行时的结构（was/were + v.-ing）、用法及when/while的区别，通过台风视频导入，结合Haitao和Jenny的真实灾害故事搭建学习支架，从观察例句到填空、句子合并、故事复述及采访模拟，实现知识点层层递进。 其亮点在于采用多模态输入（台风、龙卷风视频及图片）和任务型输出（4a-4d语法练习、记者采访），提升语言能力，通过对比when/while用法培养思维品质，以家庭互助、社区温暖故事渗透文化意识。教师可直接使用，学生能在情境中掌握语法，提升安全与情感认知。

Section A 4a-4d Unit 5 Nature’s Temper 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 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. /ˈpaʊə(r)/电力供应，能量 提醒她注意这场风暴 /ˈsaʊndli/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. /tɔːˈneɪdəʊ/ 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 /biːt/敲打，打败 /haɪd/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 Thank you! $