Unit8 Lesson 3 Secondary disasters 课件2025-2026学年冀教版英语八年级下册

该初中英语课件围绕“次生灾害”核心主题，通过2011年日本大地震视频导入，引导学生识别主灾害与次生灾害，结合“second+-ary”构词法解析“secondary”，搭建从已知词汇到新知的学习支架，系统呈现次生灾害定义、案例及复合词/派生词知识。 其亮点在于以真实灾害案例驱动教学，通过对比表清晰区分复合词与派生词，结合“灾害播报”小组任务（要求使用复合词/派生词及灾害链条逻辑），提升学生语言表达能力与逻辑思维品质。分层作业设计满足不同学习需求，助力教师高效开展词汇教学与综合语言运用训练。

Unit 8 Natural disasters Lesson 3 Secondary disasters 冀教版 （2024）八年级 下 1 Learning objectives 0 Lead in Presentation 2 Practice Production 4 Summary Assessment 6 Homework 1 3 5 7 By the end of the lesson, I will be able to... 1 2 3 understand secondary disasters and examples; use compound/derivative words about disasters; discuss secondary disaster prevention. 00 Learning objectives Q: What is the main disaster in the video? Watch and answer. Lead in 01 Earthquake. Q: What other terrible things happened after the earthquake? Tsunami. Free talk. Lead in 01 Earthquake. Tsunami. First: Then: secondary disasters the main disaster A What's a secondary disaster? Free talk. Lead in 01 A What's a secondary disaster? B How do we get the word "secondary" from "second"? Earthquake. Tsunami. First: Then: secondary disasters the main disaster These disasters that happen _______ the main disaster are called ___________________. after secondary disasters +ary Let’s read a passage and we will learn secondary disasters carefully. Presentation 02 Skim and answer. Disasters are terrible. Sometimes, secondary disasters are even more dangerous because they create more damages. Secondary disasters include landslides, fires, floods, and so on. Here is a serious example. On March 11, 2011, the largest earthquake ever recorded in Japan caused great destruction. Tsunami waves hit the coastal area less than half an hour later. These waves damaged the Fukushima Daiichi nuclear power plant. In the following days, explosions occurred at the plant. More than 150,000 people had to leave the area. Lots of radioactivity got into the ocean and came down from the atmosphere. The earthquake highlighted an important problem — disasters often cause a chain reaction, leading to more problems. If people do not deal with them properly, this will lead to greater disasters. It is everyone’s responsibility to take action to reduce disasters or secondary disasters. Q: What is the main idea of the passage? How earthquakes happen What secondary disasters are and why they are dangerous How to stop nuclear power plant explosions 1 2 3 4 Q: How many parts is the passage divided into? Three parts. Part2 Part3 secondary disasters are even more dangerous because they create more damages. Part1 Presentation 02 Skim and match. Disasters are terrible. Sometimes, secondary disasters are even more dangerous because they create more damages. Secondary disasters include landslides, fires, floods, and so on. Here is a serious example. On March 11, 2011, the largest earthquake ever recorded in Japan caused great destruction. Tsunami waves hit the coastal area less than half an hour later. These waves damaged the Fukushima Daiichi nuclear power plant. In the following days, explosions occurred at the plant. More than 150,000 people had to leave the area. Lots of radioactivity got into the ocean and came down from the atmosphere. The earthquake highlighted an important problem — disasters often cause a chain reaction, leading to more problems. If people do not deal with them properly, this will lead to greater disasters. It is everyone’s responsibility to take action to reduce disasters or secondary disasters. 1 2 3 4 Q: What does each part talk about? ① The serious example of the 2011 Japan earthquake ② The definition and types of secondary disasters ③ The lesson learned and our responsibility Part1 Part2 Part3 _______. They are______________ ______________________________. Read the passage carefully and answer the questions. Presentation 02 Read and answer. Disasters are terrible. Sometimes, secondary disasters are even more dangerous because they create more damages. Secondary disasters include landslides, fires, floods, and so on. Here is a serious example. On March 11, 2011, the largest earthquake ever recorded in Japan caused great destruction. Tsunami waves hit the coastal area less than half an hour later. These waves damaged the Fukushima Daiichi nuclear power plant. In the following days, explosions occurred at the plant. More than 150,000 people had to leave the area. Lots of radioactivity got into the ocean and came down from the atmosphere. The earthquake highlighted an important problem — disasters often cause a chain reaction, leading to more problems. If people do not deal with them properly, this will lead to greater disasters. It is everyone’s responsibility to take action to reduce disasters or secondary disasters. Q: How many secondary disasters are mentioned in this passage? What are they? Q: What disaster happened in Japan in 2011? A ______________ happened in Japan on March 11, 2011. big earthquake Five landslides, fires, floods, tsunami and explosions landslides, fires, floods tsunami explosions 10 Read the passage carefully and answer the questions. Presentation 02 Read and answer. Disasters are terrible. Sometimes, secondary disasters are even more dangerous because they create more damages. Secondary disasters include landslides, fires, floods, and so on. Here is a serious example. On March 11, 2011, the largest earthquake ever recorded in Japan caused great destruction. Tsunami waves hit the coastal area less than half an hour later. These waves damaged the Fukushima Daiichi nuclear power plant. In the following days, explosions occurred at the plant. More than 150,000 people had to leave the area. Lots of radioactivity got into the ocean and came down from the atmosphere. The earthquake highlighted an important problem — disasters often cause a chain reaction, leading to more problems. If people do not deal with them properly, this will lead to greater disasters. It is everyone’s responsibility to take action to reduce disasters or secondary disasters. Q: What happened to the Fukushima Daiichi nuclear power plant? Q: What should people do to reduce disasters? It was damaged by_____________, and ____________ occurred there. Lots of ___________ was released. People should ____________to ____________________________ ______________. tsunami waves explosions radioactivity take action reduce disasters secondary disasters 11 Read and order. Read the passage again and put the sentences in order in Part 2. A. Radioactivity got into the ocean and atmosphere. B. Explosions occurred at the plant. C. The earthquake caused great destruction. D. Tsunami waves hit the coastal area. Presentation 02 Do you know how the radioactivity becomes? A B C D 12 3 Read the sentences and pay attention to the parts in yellow. Look and learn. Presentation 02 Secondary disasters include landslides, fires, floods, and so on. （次生灾害包括滑坡、火灾、洪水等。） The earthquake highlighted an important problem. （这次地震凸显了一个重要问题。） 派生词 合成词 Q: What is the difference between compound words and derivatives? 13 Look and learn. Presentation 02 Compound words are formed when two or more words are combined. 合成词：由两个或多个单词组合而成的词。 Example: land（土地）+ slide（滑动）= landslide（滑坡）； earth（大地）+ quake（震动）= earthquake（地震） after（之后） + shock（震动）= aftershock （余震） fault（断层） + line（线）= faultline（断层线） Look and learn. Presentation 02 Derivatives are created by adding affixes (prefixes or suffixes) to existing words. 派生词：通过在已有单词上添加词缀（前缀或后缀）构成的词。 second（第二的）+ -ary（形容词后缀）= secondary（次生的 / 次要的）； harm（伤害）+ -ful（形容词后缀）= harmful（有害的） danger（危险）+ -ous（形容词后缀）= dangerous（危险的）； disaster（灾难）+ -ous（形容词后缀）= disastrous（灾难性的）； destruct（破坏）+ -ive（形容词后缀）= destructive（破坏性的）； Example: 前缀（Prefixes）：加在单词前面，改变意思 un-（不）：happy → unhappy（不开心的） dis-（相反）：appear → disappear（消失） re-（再 / 重新）：write → rewrite（重写） 后缀（Suffixes）：加在单词后面，改变词性 -ful（充满… 的）：care → careful（小心的） -less（无… 的）：care → careless（粗心的） -tion（名词后缀）：act → action（行动） 词缀分类 & 例子 Look and learn. Presentation 02 合成词 vs 派生词 对比表 Look and learn. Presentation 02 特征 合成词（Compound） 派生词（Derivative） 构成方式 单词 + 单词 词根 + 词缀（前缀 / 后缀） 核心特点 两个部分都是独立单词 词缀不能单独使用，只能依附词根 含义变化 两个词的含义组合成新义 词根核心含义不变，词缀微调意思 / 词性 例句 landslide（land+slide） secondary（second+-ary） Read and fill. Read the sentences in Part 4 and fill in the blanks. Practice 03 lucky luckily creativity creation 18 Read and fill. Read the sentences in Part 4 and fill in the blanks. Practice 03 firefighter landslide 19 Work in groups of 3-4. Imagine you are news reporters making a 1-minute live broadcast about a natural disaster and its secondary effects. Production 04 Disaster Reporter’s Broadcast. Your report must: Step1: Follow the clear chain: Main disaster → Secondary disasters → Impacts Step2: Include at least 2 compound words Step3: Include at least 2 derivatives Step4: End with a short call to action or safety tip 20 Work in groups of 3-4. Imagine you are news reporters making a 1-minute live broadcast about a natural disaster and its secondary effects. Production 04 Disaster Reporter’s Broadcast. Useful Words Compound words earthquake landslide mudslide wildfire aftershock floodwater thunderstorm flashflood death-toll rescue-team rainstorm coastline hometown sandstorm Derivatives secondary dangerous harmful disastrous survivor unsafe rebuild recovery protective destructive natural sudden medical homeless powerful Useful Words Good morning, everyone. Today we introduce... First,...attacked this area. Then it caused... These disasters are... Many people lost......come to help... People will try their best to... We need to learn... That’s all. Thank you. 21 Show time Talk clearly (内容清晰) Pronunciation(发音标准) Body language(使用肢体语言) Fluently(流利的) Reasonable(理由合理) Grade and share: 一、判断下列单词是否为复合词，是打 “√”，否打 “×” secondary ( ) landslide ( ) explosion ( ) earthquake ( ) toothbrush ( ) responsible ( ) The grammar we have learned Summary 05 × √ × √ √ × 三、写出下列复合词的构成（模仿示例） 例： landslide = land + slide earthquake = _________________________________ toothbrush = _________________________________ chainreaction = _________________________________ nuclearpowerplant = _________________________________ The grammar we have learned Summary 05 earth + quake tooth + brush chain + reaction nuclear + power + plant 三、用括号内单词的复合词形式填空 The __________ (sun + rise) is a beautiful sight in the morning. We use a __________ (book + store) to buy our school books. After the heavy rain, a __________ (mud + slide) happened on the hill. The __________ (fire + man) saved the children from the burning house. My __________ (class + room) is on the second floor. The grammar we have learned Summary 05 sunrise bookstore mudslide fireman classroom 四、写出下列单词的派生词 例：harm → harmful（adj.） second → ________（adj. 次要的）act → ________（n. 行动） care → ________（adj. 小心的）danger → ________（adj. 危险的） use → ________（adj. 有用的）luck → ________（adj. 幸运的） create → ________（n. 创造） proper → ________（adv. 恰当地） The grammar we have learned Summary 05 secondary action careful dangerous useful lucky creation properly Assessment 06 Self-assessment I can understand secondary disasters and examples. I can use compound/derivative words about disasters； I can discuss secondary disaster prevention. Basic (基础) Improving(提升) Extend (拓展) Homework 07 背诵并默写关于次生灾害的词汇与短语，能准确说出复合词 / 派生词的构成规则，用例句进行仿写。 结合本课阅读内容，用复合词 / 派生词写 3 个句子，描述你对次生灾害的理解与应对想法。 收集生活中 3 个和 “自然灾害 / 次生灾害” 相关的场景，用本课所学词汇和句型写出对应的句子。 $