Unit 9 Forces of Nature Grammar in use课件2025-2026学年仁爱科普版英语八年级下册

Unit 9 Forces of Nature Grammar in use （仁爱版 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 master disaster compound words in context; use comparative/superlative adverbs for emergency comparisons; describe disasters with compound words and adverbs. 00 Learning objectives www.21cnjy.com www.21cnjy.com Look and say. What’s this? It’s an earth. What’s this? It’s a quake. What’s this? It’s an earthquake. www.21cnjy.com Look and say. What’s this? It’s snow. What’s this? It’s a storm. What’s this? It’s a snowstorm. www.21cnjy.com Look and say. What’s this? It’s thunder. What’s this? It’s a storm. What’s this? It’s a thunderstorm. www.21cnjy.com Look at the pictures and read the sentences. Pay attention to the compound words in bold. A snowstorm is a storm with strong winds and a lot of snow. A thunderstorm is a storm with thunder and lightning. An earthquake is a quake of the surface of the earth. snow +storm snowstorm thunder + storm earth + quake thunderstorm earthquake Activity 1 Look and read. Presentation 02 compound words(合成词) www.21cnjy.com Presentation 02 Look and guess. flashlight   flash  (闪光)  light  (光) 能发出闪光的光   sand  (沙)   storm  (风暴)  sandstorm  带着沙子的风暴 www.21cnjy.com Presentation 02 Look and guess.  after  (之后)  shock  (震动) aftershock  主震之后的余震  market  (市场)  supermarket  超市   super  (超级) www.21cnjy.com Activity 2 Fill in the blanks with the given words in the box. flashlight sandstorm aftershock supermarket 1. You’d better bring a(n) __________ if you need to walk on a dark road. 2. People living in the desert know how to keep themselves safe when a(n) __________ comes. 3. We should buy cooked food and clean water in the _____________ before snowstorm. 4. A strong __________ of the earthquake happened about 40 minutes later, and it caused more harm to the area. flashlight sandstorm supermarket aftershock Fill in the blanks. Presentation 02 www.21cnjy.com Look and learn. Presentation 02 构成方式：由两个或多个基础单词拼接而成， 例如： book（书） + case（盒子）→ bookcase（书架） sun（太阳） + flower（花）→ sunflower（向日葵） 意义整合： 合成词的含义并非原词意义的简单叠加，而是形成新的特定概念。 例如： butter（黄油） + fly（飞）→ butterfly（蝴蝶，并非“黄油飞”） break（打破） + fast（快）→ breakfast（早餐，指“打破食”） compound words(合成词) www.21cnjy.com Look and learn. Presentation 02 语法功能：作为单一词汇使用，有独立的词性。 例如： 名词：notebook（笔记本）、classroom（教室） 动词：babysit（照看婴儿）、sunbathe（日光浴） 形容词：snow-white（雪白的）、part-time（兼职的） compound words(合成词) www.21cnjy.com Activity 3 Read the text and guess the meaning of the underlined words. With fewer grasslands in some areas, the sandstorm appears more often. Sandstorms can cover farmlands, cause traffic accidents, and harm human health. People should take action in time to fight against sandstorms. Or, the sandstorm may become a worldwide problem. Read and guess. Presentation 02 grass + land = grassland (草地) farm + land = farmland(农田) world + wide = worldwide www.21cnjy.com 14 www.21cnjy.com Look and think. Presentation 02 Comparative and superlative adverbs Q: What words did you hear in the song? What do they describe? www.21cnjy.com Look and say. When a fire breaks out, we must run ______ (fast) to the exit. faster Tips：火灾发生时，我们必须更快地跑向出口。 www.21cnjy.com Look and say. Firefighters work ______________ (carefully) than ordinary people to save lives. more carefully Tips：消防员工作比普通人更认真。 www.21cnjy.com Look and say. Of all the volunteers, Li Ming arrived ________________ (early) at the shelter. (the) earliest Tips：在所有志愿者中，李明到得最早。 www.21cnjy.com Look and say. We need to walk _________ (far) to find higher ground during a flood. farther Tips：洪水时我们要走更远去找高地。 www.21cnjy.com Read and think. Presentation 02 When a fire breaks out, we must run ___________ (fast) to the exit. Firefighters work ________________ (carefully) than ordinary people to save lives. Of all the volunteers, Li Ming arrived ___________ (early) at the shelter. We need to walk ___________ (far) to find higher ground during a flood. faster more carefully (the) earliest farther Read the sentences and think about the rules hidden in them. www.21cnjy.com Read the conversation. Pay attention to the words in bold. Will there be a disaster prevention training at school tomorrow? No problem! What should we wear to school? Yes. We must arrive earlier than usual. We’d better wear sports shoes. We can perform best in sports shoes. earlier是early的比较级 best是well的最高级 Activity 1 Read the conversation. Presentation 02 www.21cnjy.com Read the conversation. Pay attention to the words in bold. Will there be a disaster prevention training at school tomorrow? No problem! What should we wear to school? Yes. We must arrive earlier than usual. We’d better wear sports shoes. We can perform best in sports shoes. earlier是early的比较级 best是well的最高级 Activity 1 Pair work. Presentation 02 www.21cnjy.com Comparative and superlative adverbs 定义：英语中，副词有三个等级，即原级、比较级和最高级。 1. 副词比较等级的构成 副词比较等级的规则变化与形容词比较等级的规则变化大致相同。 规则变化： 原级 比较级 最高级 fast faster fastest hard harder hardest late later latest early earlier earliest carefully more carefully (the) most carefully Look and learn. Presentation 02 单音节词：直接加 -er / -est 多音节词：前面加 more / most 以 -e 结尾的单音节词，直接加 -r / -st 以 -y 结尾：变 y 为 i，再加 -er / -est www.21cnjy.com Comparative and superlative adverbs 下列副词的比较等级为不规则变化 原级 比较级 最高级 badly worse worst far farther/further farthest/furthest little less least much more most well better best Look and learn. Presentation 02 abandon, abandon… www.21cnjy.com 25 2. 副词比较等级的用法 副词比较等级的用法与形容词比较等级的用法基本相同。 （1）原级 表示比较双方程度相同时，常用“as + 副词原级 + as”结构，意为“……和……一样” 。 例如： I want to live as happily as before. 我想和以前一样快乐地生活。 表示双方程度不同时，常用“not as /so + 副词原级 + as”结构，意为“……不如……”。 例如： Kangkang doesn’t draw as/so carefully as Li Hua. 康康画画不如李华认真 Comparative and superlative adverbs Look and learn. Presentation 02 www.21cnjy.com （2）比较级 两者之间比较时，常用“副词比较级 + than”结构，意为“比……更……”。 例如：Li Hua cuts more finely than her. 李华比她切得更细。 表示否定的比较级可用 “less + 副词原级 + than” 结构，表示“……不如……”。 例如：He speaks less loudly than I do. 他说话声音没有我大。 （3）最高级 三者或三者以上比较时，常用“the + 副词最高级 + in/of ... （比较范围）”结构，意为“某人（或某物）在某范围内最……”。副词最高级前可省去the。 例如： Lin Tao jumps (the) highest in our class. 林涛在我们班里跳得最高。 Li Feng sings (the) best of all. 李峰是所有人中唱得最好的。 Comparative and superlative adverbs Look and learn. Presentation 02 www.21cnjy.com 3. 副词比较等级中的注意事项 （1）在同级比较结构中，第一个as前可加half、twice、three times等词来修饰，表示倍数关系。 例如：Liu Mei jumps twice as far as her sister. 刘梅跳得是她姐姐的两倍远。 （2）副词的比较级前可用much、a lot、a little、a bit、even、still、far等词来修饰，表示不同程度。 例如：She played the piano much more wonderfully than you. 她钢琴弹得比你棒得多。 Comparative and superlative adverbs Look and learn. Presentation 02 www.21cnjy.com 3. 副词比较等级中的注意事项 （3）借助other、else或否定词，比较级形式可用来表示最高级概念。 例如：Nobody runs faster than him. 没人跑得比他快。 （4）“the + 比较级……，the + 比较级…… ”表示“越……，越……”。 例如：The more you read, the more you learn. 你读书越多，学到的知识就越多。 （5）“比较级 + and + 比较级”表示“越来越……”。 例如：It is raining more and more heavily. 雨越下越大。 Comparative and superlative adverbs Look and learn. Presentation 02 www.21cnjy.com 1. 写出下列副词的比较级和最高级形式： late → ________ → __________ badly → ________ → ________ hard → __________ → ________ early → ________ → __________ well → __________ → ________ far → ________/ ____________ → ________/ ________ later latest worse worst earlier earliest better best harder hardest farther further farthest furthest Comparative and superlative adverbs Look and fill. Practice 03 www.21cnjy.com 2. 用括号内单词的适当形式填空： She works _______ (hard) than her brother, but her father works ________ (hard) in the family. He arrived ________ (early) than me, but she arrived _________ (early) in the class. Tom runs ____________ (quick) than Jack, but Sam runs ______________ (quick) of all. The bird sings __________ (loud) than the frog, but the alarm rings __________ (loud) of all. more quickly most quickly harder hardest more loudly most loudly earlier earliest Comparative and superlative adverbs Look and fill. Tips：farther和farthest指物理距离的更远和最远；further和furthest指抽象程度上的延伸，表示更进一步，更深层次和最深层次。 Practice 03 www.21cnjy.com Complete the table and learn how to use the comparative and superlative adverbs. Adverb Comparative Superlative fast The forest fire spread faster than we thought. The guards ran (the) fastest to put out the fire. carefully He drives _____________ than I do. Xia Feng checks the windows ___________________. far We need to walk _______ to keep away from the flood. The floodwater reached _______________ into the eastern part of the city after the heavy rain.. more carefully (the) most carefully farther (the) farthest Activity 2 Complete the table. Practice 03 www.21cnjy.com Activity 3 Complete the text with the correct form of the given words. bad far hard high terrible On November 1st, 2012, Hurricane Sandy swept through our town. I still remember how terrible the superstorm was. We lived ________ away from the beach than most of our neighbors, and our house stood on a hillside. I thought we were safe. But the wind was blowing __________ every minute and the waves kept reaching __________. Soon, the storm arrived and took away the roof of our house. It hit the beach side of the town ______________. Nearly everything there was gone. It is a _______ painful experience for me and I still can’t get over it. farther harder (the) worst terribly higher Activity 3 Complete the text. Practice 03 www.21cnjy.com Production 04 可用核心副词 原级：fast, carefully, early, far, quickly, well, loudly 比较级：faster, more carefully, earlier, farther/further, more quickly, better, more loudly 最高级：(the) fastest, (the) most carefully, (the) earliest, (the) farthest/furthest, (the) most quickly, (the) best, (the) most loudly 句型提示（可仿写） 比较级： We need to arrive earlier than usual for the training. He runs faster than his classmates to the safe area. 最高级： She walks (the) farthest to get away from the building. The team works (the) most carefully to check the windows. 围绕「防灾演练 / 自然灾害」主题，写一段5–8 句的短文或3–5 轮对话 必须至少使用 3 个副词比较级 和 2 个副词最高级。 Adverb Challenge: Disaster Safety Story. www.21cnjy.com 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: www.21cnjy.com www.21cnjy.com 一、根据句意及提示填空。 A violent _____________ (雷暴) with heavy rain hit the city last night. We should prepare enough food and water in the _____________ (超市) before the snowstorm comes. A strong _________ (沙尘暴) can cover the sky and make it hard to see the road clearly. We need to stay away from the building after the _____________ (地震), because a dangerous aftershock may come. If you have to walk outside at night, a _________ (手电筒) can help you. The phrase we have learned Summary 05 thunderstorm supermarket sandstorm earthquake flashlight www.21cnjy.com 二、用副词的比较级和最高级规则及所给词的正确形式填空。 The rescue team ran _________ (fast) than anyone else to save the people trapped in the flood. You should listen to the safety warning _____________ (carefully) than before when a disaster comes. Of all the volunteers, the young man climbed _____________ (high) to save the child on the tree. The wind blew _________ (hard) at midnight, and we could hear the sound clearly. Among all the natural disasters, the hurricane hit this town _________ (bad) in history. The phrase we have learned Summary 05 faster more carefully (the) highest harder (the) worst www.21cnjy.com 三、短语翻译： 雷暴天气 ____________________________ 地震余震 ____________________________ 防灾训练 ____________________________ 全球性问题 ____________________________ 应急自救 ____________________________ The phrase we have learned Summary 05 thunderstorm weather earthquake aftershock disaster prevention training worldwide problem emergency self-rescue www.21cnjy.com 四、句子翻译： 如果暴风雪来临，我们应该待在室内不要外出。 ________________________________________________________________ 救援队比任何人都跑得更快，第一时间赶到了地震现场。 ________________________________________________________________ ________________________________________________________________ 我们必须比平时更仔细地检查门窗，确保在沙尘暴来临前做好防护。 ________________________________________________________________ ________________________________________________________________ 这场台风是这座城市近几十年来最严重的自然灾害。 ________________________________________________________________ ________________________________________________________________ The phrase we have learned Summary 05 If the snowstorm comes, we should stay indoors and not go out. The rescue team ran faster than anyone else and arrived at the earthquake scene the first time. We must check the doors and windows more carefully than usual to make sure we are protected before the sandstorm comes. This typhoon is the most serious natural disaster that has hit the city in recent decades. www.21cnjy.com Assessment 06 Self-assessment I can master disaster compound words in context. I can use comparative/superlative adverbs for emergency comparisons； I can describe disasters with compound words and adverbs. www.21cnjy.com Basic (基础) Improving(提升) Extend (拓展) Homework 07 完成语篇相关的单词填空题（10道），确保填写准确。 结合语篇内容，用本节课所学词汇、句型，写出5句地震自救相关的句子。 制作1份地震自救英文小贴士（包含3-5条核心自救方法，可搭配简单图画）。 www.21cnjy.com Lavf59.14.100 Lavf59.14.100 $