Unit 8 Lesson 4课件- 2025-2026学年冀教版英语八年级上册

Unit 8 Protecting the environment Lesson 4 Global warming 学习目标 通过本节课的学习，同学们将能： 1．掌握“global warming, melt, flood, effect, address”等词汇，理解文本内容，精准提取全球变暖的成因、影响、解决措施等关键信息。 2．用英语清晰表达与环境问题相关的内容，开展讨论与实践分享。 3．深度理解文本逻辑，灵活运用语言知识分析、 解决实际环境问题，用英语有效传播环保理念。 Watch a video Free talk What can you see in the video? How do you feel? I see the ice is melting. It’s scary. I see there is a flood. I feel scared. I see... extreme weather Free talk Do you know why the ice is melting and the sea level is rising? Global warming. Let's learn it from the passage. What makes it happen？ What can it cause？ How to solve it？ What is global warming？ Presentation oil n.石油;油 gas n.天然气；气体 coal n.煤 planet n. 行星;地球 increase n. & v.增加；增长 effect n.影响;效果 pole n. (行星的)极;极端 flood n.洪水 melt v.融化;(使)熔化 storm n.暴风雨 device n.设备 action n.行动 serious adj. 严重的 cause v.造成;引起 thankfully adv.幸亏;感激地 address v.设法解决;演讲 Which of the following is the correct order of the article? A. Effects—Reasons—Solutions B. Reasons—Solutions—Effects C. Reasons—Effects—Solutions D. Solutions—Effects—Reasons Reading Fast reading 1 Read and choose. The earth is getting hotter. We call it global warming. What makes this happen? People burn things like gas, oil, and coal. They cut down trees and create a lot of waste. These are major reasons for global warming. Global warming affects everything on the planet. It's like getting a fever. If we have a few degrees' increase in body temperature, we feel sick. The same goes for our planet. The effects of global warming are serious. For example, the snow and ice in the North Pole are 砍伐 全球变暖 get a fever 发烧 starting to melt. This causes the sea level to rise, which can lead to more floods and storms. Thankfully, we can help slow down global warming by taking some simple actions. Instead of driving, we can choose to walk or bike. Turn off devices we aren't using like TVs and lights. Another great way to help is by planting trees in our community and doing other "green" activities. Just by making some small changes in our daily lives, we can play a role in addressing global warming. 海平面 导致 减缓 关闭 play a role in 在……中发挥作用 Read the passage and write true (T) or false (F). 2 A Global warming is mainly caused by nature. ( ) B Global warming affects everything on the planet. ( ) C Planting trees is a great way to slow down global warming. ( ) F T T Read the passage again and complete the mind map. 3 Global warming major reasons Burn things like _______________. ______down trees. Create__________________. solutions Choose to ___________ instead of driving! Turn off___________________. _________ and do other "green" activities. effects The snow and ice in the North Pole____________________. The sea level is rising, which can lead to____________________. gas, oil, and coal Cut a lot of waste are starting to melt more floods and storms walk or bike devices we aren't using like TVs and lights Plant trees 1.What's the purpose of this passage? A. To tell us only factories cause global warming. B. To let us know what global warming is, its causes, effects and solutions. C. To say that global warming can't be solved. What might be a possible place to read this passage? A. A storybook about animals. B. A science magazine about the environment. C. A cookbook with easy recipes(食谱). D. A travel guide to mountains. Think deeply Is there anything you can do to slow down global warming? Think and tick. 4 Use energy sources such as solar and wind power. Let people around you know about the harm of global warming. Take shorter showers to save water and energy used for heating the water. Choose environmentally friendly products with less packaging. Use things again or recycle them for other purposes. Attend environmental clubs to learn more about the environment. Try to eat less meat and more vegetables. There are many other environmental problems. Think and write about one of them. 5 A What is the problem? B What do you think are the causes of this problem? C What are its effects? D What should we do to solve this problem? For example A. What is the problem? The problem is water pollution. B. What do you think are the causes of this problem? Factories pouring dirty water into rivers or lakes. People throwing trash into water. C. What are its effects? It hurts fish and plants in water, and can also make people sick if they drink or use the polluted water. D. What should we do to solve this problem? We can ask factories to clean their water before pouring it out. We can help by not throwing trash into rivers, lakes or oceans. 1. They cut down trees and create a lot of waste. 他们砍伐树木，产生了大量废弃物。 Language points 1)cut down 砍伐；砍倒；削减。当接代词作宾语时，代词要放在 “cut” 和 “down” 中间， 例如：cut it down 把它砍倒 / 削减它 2)create a lot of waste 产生大量废弃物；制造很多垃圾。 a lot of 可修饰可数名词复数或不可数名词，此处修饰不可数名词 waste（废弃物；垃圾 ） 。 例句：Factories create a lot of waste during production. 工厂在生产过程中产生大量废弃物。 【对点练习】 1. We should __________ the use of plastic to protect the environment. A. cut up B. cut down C. cut off D. cut in 2.Too many cars __________ a lot of air pollution. A. create B. make C. do D. have 3.There are many apples on the tree.（改为同义句） There are _____ _____ _____ apples on the tree. a lot of 2. If we have a few degrees' increase in body temperature, we feel sick.如果我们的体温上升几度，我们就会感到不舒服。 1)a few degrees' increase 几度数的增长 a few 修饰可数名词复数 degrees（度数 ） degrees' 是名词所有格形式，用来表示 “……度数的（增长等 ）” 。 例如 a few meters' distance几米的距离 2)feel sick 感觉不舒服；感觉生病 “feel + 形容词” 描述人的感受 【对点练习】 1. There is a _____ walk from the bus stop to my home. A. few meters' B. few meter's C. little meters' D. little meter's 2.She __________ happy because she gets a present. A. feel B. feels C. feeling D. to feel 3.She feels _______(tire) after a long day's work. 经过一整天的工作，她感觉疲惫 。 tired 3. This causes the sea level to rise, which can lead to more floods and storms.这会导致海平面上升，从而可能引发更多的洪水和风暴。 1)cause...to do sth. 导致……做某事；使……发生某动作 / 出现某种情况。“causes the sea level to rise”中to rise是动词不定式作宾语补足语。 例如:Smoking causes him to cough a lot.吸烟导致他频繁咳嗽。 2)lead to导致；造成（某种结果 ）。“to” 是介词，后接名词、代词或动名词（即 -ing形式的动词 ）。 例句：Eating too much junk food leads to health problems. 吃太多垃圾食品导致健康问题。 【对点练习】 1. Over-fishing causes the number of fish in the river______. A. to drop B. drop C. drops D. dropped 2. Not recycling properly may __________ environmental problems. A. cause B. lead to C. A and B D. 都不对 4. Turn off devices we aren't using like TVs and lights.关闭我们不再使用的设备，如电视和灯具。 turn off 关掉，关闭。当它后面接名词作宾语时，名词可以放在turn off中间，也可以放在turn off之后；但如果接代词作宾语，代词必须放在turn off中间。 例如：turn off the TV = turn the TV off （关掉电视） turn it off 把它关掉 【对点练习】 Remember to __ the lights when you leave the classroom. A. turn on B. turn off C. turn up D. turn down 5. Just by making some small changes in our daily lives, we can play a role in addressing global warming.只要在我们的日常生活中做一些小的改变，我们就可以在解决全球变暖问题上发挥作用。 address v. 设法解决；演讲。n. 地址 ；演讲 例句：The government is taking measures to address environmental pollution.政府正采取措施解决环境污染问题。 Please leave your name and address .请留下你的姓名和地址。 【对点练习】写出画线词的词性和意思 1.We must find ways to address the problem of air pollution. 2.Please write your address on the form. v. 设法解决 n. 地址 当堂检测 一、单项选择 1．Burning too much will produce a lot of harmful gases. A．storm B．coal C．device D．planet 2．The bad weather may more traffic accidents. A．lead to B．get a fever C．turn off D．address 3．We need to take to protect our environment right now. A．effect B．cause C．action D．device 4． ， no one was hurt in the small fire. A．Seriously B．Thankfully C．Suddenly D．Clearly 5．The rising temperature will make the ice at the North Pole . A．melt B．heat C．burn D．affect 二、用所给词的适当形式填空 1．The number of students in this school (increase) by 10% this year. 2．This new (device) can help us save more energy. 3．Heavy rain often (cause) floods in this area. 4．The (effect) of global warming are becoming more and more obvious. 5．We should (address) the problem of pollution as soon as possible. 6．When the snow (melt) in spring, the river becomes wider. increase device cause effects address melts 三、句型转换(按要求改写句子) 1．The factory causes a lot of pollution.(改为一般疑问句) → the factory a lot of pollution? 2．We should take action to stop global warming.(对画线部分提问) → should we to stop global warming? 3．The effect of this policy is good.(改为复数句) →The of this policy good. 4．He addressed the problem yesterday.(改为否定句) →He the problem yesterday. Does cause What do effects are didn’t address She ______ a heart disease and has to stay in hospital for a long time. A. suffers from B. learns from C. hears from D. comes from 答案：A。解析：这句话的意思是“她患有心脏病，不得不长时间住院。”“suffer from”符合语境，表示“患有（疾病）”；“learn from”是“向……学习”；“hear from”是“收到……的来信”；“come from”是“来自”。 • Many people in the poor area ______ hunger and cold in winter. A. live from B. suffer from C. die from D. keep from 答案：B。解析：句子意思是“贫困地区的许多人在冬天遭受饥饿和寒冷。”“suffer from”表示“遭受”，符合语境；“live from”这种表达不符合常用语义；“die from”是“死于”；“keep from”是“阻止；避开”。 THANKS Lavf58.12.100 $