UNIT 8 Lesson 44教学详案—冀教版中学英语八年级下

UNIT 8　Save Our World
Lesson 44: Environment Clubs
设计说明 首先，通过展示生动直观的图片激发学生的学习兴趣；同时通过师生间的对话引出本课的话题Environment Clubs(环境俱乐部)，然后带领学生一同学习本节课的生词。接下来，通过播放录音，听短文让学生掌握单词的正确发音；再者，读短文。利用Let’s Do It!中的练习题对文章内容进行巩固。最后，进行综合训练，检验学生掌握的情况。本节课从多个角度、多种形式对本课的语言知识进行练习，从而达到教学目的，实现教学目标。 教学目标 通过本课节的教学，学生达成以下目标： 1.知识目标 掌握单词：least, pollute, waste, shut 接触单词：reduce, reusable , skip , packaging , leaky , litre , sink , electricity 短语和句型：throw away; neither... nor...; shut down; How much garbage do you throw away after lunch 2.能力目标 (1)掌握一些与保护环境有关的词汇和重点句子； (2)运用所学的知识介绍环境俱乐部。 3.情感目标 谈论如何身体力行保护环境，减少污染，能用英语设计有关保护环境的海报。号召学生保护环境从生活小事做起，增强学生珍惜和爱护地球的情感意识。 重点难点 1.重点：掌握及了解有关环保的单词和短语。 2.难点：能读懂并说出减少污染从而保护环境的有效办法。 教学准备 PPT 课件；本课节用到的录音 授课时数 1课时 教学过程 Step 1　Leading in T: Hello，boys and girls! Look at the following pictures and answer the questions. T: Do you think the characters in the pictures are correct Ss: No. T: What should we do in the right way S1: We should throw the rubbish into the trash can. ... T: Look at the following pictures. What can we do to stop pollution Ss: Turn off the tap, pick up litter, take a shower. Step 2　New words In this lesson we are going to learn some sentences about “clean up”. At first let’s learn the new words. Step 3　Thinking about it · What do you do when you see somebody throwing garbage on the ground · Does your school have an environment club Step 4　Listening 1. Listen to the lesson and tick the activities mentioned. 2. Ask the students to check the answers in groups. Answers: Step 5　Reading Read the lesson and answer the questions. 1. Why do many students join environment clubs in North America？ 2. Why do the students take their own bags when they go shopping？ 3. How do the students in an environment club save water？How do they save electricity？ Answers: 1. Because they want to reduce pollution and protect the environment. 2. Because it’s a good way to reduce packaging. 3. They fix leaky toilets and sinks. Turn off the lights when they leave a room. Turn off televisions and shut down computers when they are not using them. Step 6　Discussion 1. Divide the class into small groups. Ask each group to discuss the following topics in English: (1) According to the reading, what things do North American students do to stop pollution or to make less pollution (Have no-garbage lunches! Have no-car days! Save water!) (2) What have you done at school to stop pollution (3) What can you do to make less pollution 2. Ask some groups to share their ideas with the rest of the class. Step 7　Practice 1. Fill in the blanks with the correct forms of the words in the box. waste least nobody shut pollute
1. The soap factory 　　　　 the drinking water in this area. 2. Students should not 　　　　 paper. 3. 　　　　 knows when life on the earth started. 4. He who talks the most knows the 　　　　. 5. I couldn’t 　　　　 the window because it was stuck. Answers: 1. polluted/pollutes　2. waste　3. Nobody　4. least　5. shut 2. Ask the students to check the answers in groups. Step 8　Retelling Read the passage and fill in the blanks. In some countries of the world, people have started to reduce the amount of garbage they make. How First, they buy 　　　　 things. They try to buy only what they really need. When you buy fewer things, you 　　　　 away fewer things. Second, they reuse things. They use things, and then they use them again! Third, they recycle things. They make old things into new things. People call these the “three Rs”: reduce, 　　　　 and 　　　　. The three Rs help us remember that 　　　　 is a problem. Answers: fewer; throw; reuse; recycle; garbage/pollution Step 9　Practice Ask the students to make posters about littering and recycling to call on more people to stop pollution. Step 10　Language points 1. In an environment club，students work together to reduce pollution and protect the environment. 在环境俱乐部，学生们一起工作来减少污染，保护环境。 reduce v．减少。其反义词为increase(增加)。常用短语：reduce to减少到……；reduce by减少了…… The number of the students has reduced to 200 this year. 今年的学生数量已减少到了二百人。 2. How much garbage do you throw away after lunch？ 午饭后你们扔掉多少垃圾？ throw away丢掉，扔掉。它相当于throw out/throw off。该短语是动副型短语，当宾语是代词时，要放在throw与away之间；当宾语是名词时，置于throw与away之间或away之后均可。 Don’t throw away the old bottles. They are still useful. 不要扔掉这些旧瓶子。它们还有用。 3. Environment clubs encourage students to bring their lunches in reusable bags and dishes.环境俱乐部鼓励学生用可重复使用的袋子和餐具带午餐。 encourage sb. to do sth.鼓励某人做某事。其中，动词不定式作宾语补足语。 My teacher always encourages me to work hard. 我的老师总是鼓励我努力学习。 4. The class with the least garbage gets a prize. 垃圾最少的班级可以获奖。 least是little的最高级形式, 意为“最少”，修饰不可数名词。最高级前面通常要用定冠词the。 Tom drank the least milk among the three boys. 这三个男孩中, 汤姆喝的牛奶最少。 5. It’s a good way to reduce packaging. 减少包装是一个好方法。 该句中to reduce packaging是动词不定式短语作后置定语，修饰way。此句可转化为一个含定语从句的复合句：It’s a good way (that) you reduce packaging. way在此作 “方式、方法” 讲，其后可接动词不定式(短语)、of短语及that/in which引导的从句作定语，that/in which可省略。 It’s a good way to practice spoken English.＝It’s a good way of practicing spoken English.＝It’s a good way(that/in which)you practice spoken English. 那是一个练习英语口语的好方法。 6. Did you know that a leaky toilet can waste 20 to 40 litres of water an hour？你知道一个漏水的马桶一小时能浪费20到40升水吗？ waste v．浪费。常构成固定搭配 waste water/electricity/oil等。其反义词为save(节约, 节省)。 The naughty boy wasted much money. 那个淘气的男孩浪费了很多钱。 7. Turn off the television and shut down the computer when you are not using them.当你不看电视或不用电脑的时候, 请关掉它们。 (1)辨析: turn off，turn on，turn up与turn down turn off意为“关掉，关闭”，一般指关闭电源、水等，后面常接电器、仪器等。turn on意为“打开”，一般指打开电源、水等，后面常接电器、仪器等。turn up调大电器等的频率、音量等。turn down调小电器等的频率、音量等。
Please turn off the radio. My grandma is sleeping. 请关掉收音机，我的奶奶正在睡觉。 Could you please help me turn on the TV 你能帮我打开电视吗？ I can’t hear clearly. Please turn up the MP3. 我听不清楚。请调大MP3的音量。 He turned down the radio. 他调小了收音机的音量。 (2) shut down也可译为“关闭;停下”。它强调机器等停止运转，可指关闭窗户等，也可指关闭公司、工厂、店铺等。 The restaurant shut down last year. 这家饭店去年倒闭了。 But the company shut down in 1995. 但这家公司在1995年关闭了。 Step 11　Summary 1. Learn some new words and expressions. 2. Be able to understand this text. 3. Call in people to work together to make our environment clean. Step 12　Homework 1. Finish the exercises of Lesson 44. 2. Preview the next lesson. 3. According to the text, think about the measures to protect the environment and write down your answer. 当堂达标 Ⅰ.根据句意及汉语提示写出单词 1．Chemical wastes 　　　　(污染) the rivers and streams. 2．You should not 　　　　(浪费)food when many people are hungry. 3．We should take 　　　　(可重复利用的) bags for shopping. 4．Mr. Smith can drink five 　　　　 (公升) of beer. 5．It 　　　　 (减少)the risks of heart disease. Ⅱ. 单项选择 1.How can we buy the most things with 　　　　 money A. little B. less C. least D. the least 2.You should 　　　　 the computer when you’re not using it. A. turn on B. shut down C. cut down D. put on Ⅲ. 连词成句 1. forget, off, lights, don’t, the, turn, to ____________________________________________________！ 2. walk, days, people, no-car, to, on, work ____________________________________________________. 3. much, garbage, do, how, people, away, throw, every, day ____________________________________________________？ 4. our, it’s, to, the, duty, environment, protect ____________________________________________________. 5. to, mother, encourages, work, often, me, hard ____________________________________________________. 答案：Ⅰ. 1. pollute　2. waste　3. reusable　4. litres　5. reduces Ⅱ. 1. D　2. B Ⅲ. 1. Don’t forget to turn off the lights 2. People walk to work on no-car days 3. How much garbage do people throw away every day 4. It’s our duty to protect the environment 5. Mother often encourages me to work hard 板书设计 UNIT 8　Save Our World Lesson 44: Environment Clubsleast; pollute; waste; shut; throw away; encourage sb. to do sth. ; neither... nor... ; turn off; shut down1. How much garbage do you throw away after lunch 2. Turn off the television and shut down the computer when you are not using them.
教学反思