外研版 (新标准)九年级上册Unit 2 Repeat these three words daily: reduce, reuse and recycle.优秀课件ppt

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Module12  Save our worldUnit 2  Repeat these three words daily: reduce, reuse and recycle.Teaching objectivesVocabulary divide, plastic, policy, reuse, bottle, throw away, repeat, reduce ,cloth, ton, tons of, rubber, rapid, step, grandson granddaughter.Sentences patternDo you turn off the lights when you leave the room?Do you take your own bag when sopping and not ask for aplastic bag?It is better to use china cups and doth bags because they cam be used many times.Although it takes energy to change things into something else..key points and difficult points1.本单元词汇和重点句子。2．which和who引导的定语从句。Teaching backgroundThrough the study of this unit, the students can master the basic language knowledge and skills. At the same time, they can ask questions to make them think about whether their behavior in daily life is environmental protection, then lead to three key words about environmental protection "reduce", "reuse" and "recycle", and explain in detail how to achieve these three aspects in daily life. So as to improve the consciousness and sense of responsibility of environmental protection, starting from small things and ourselves. Publicize the importance of environmental protection. Teaching Toolsblackboard, tape recorder , cards and multi-mediaTeaching proceduresStep 1 Warming up & Leading in1．Greetings.2． Lead-inThrough the study of the last unit, we have a preliminary understanding of environmental protection and feel the seriousness of environmental problems. Now please think about several questions: Do you walk or ride a bike to school?Do you buy new clothes just because they are modern?Do you turn off the lights when you leave the room?Do you take your own bag when shopping and not ask for a plastic bag?Do you buy drinks in bottles？And what do you do with the bottles when they are empty?Do you divide the waste into things to recycle and things to throw away? 1)  The teacher chooses some students to answer the questions.2)  Give encouragement and praise for good performance. The teacher then shows the two pictures on the PPT and 1)  Ask the students to look at the pictures and discuss the questions in groups. Which things are good for the environment and why?2)  Choose some students to answer the questions.Step 2 Presentation  Vocabulary The teacher leads the whole class to learn new words: divide, plastic, policy, reuse, bottle, throw away, repeat, reduce ,cloth, ton, tons of, rubber, rapid, step, grandson granddaughter.2 .Explain vocabulary in detail.3. Practice words. 2.Look at the title of the passage. What suggestions do you think the passage will make? Use the words in the box to help you.   1) Let students discuss the questions in groups.2) Choose some students to show their answers. 3) Give encouragement and praise for good performance.Reading 3. Read the passage and answer the questions:Which ways are good for the environment and why?1) Let the students scan the passage and find out the answer.2) Ask the students to check with a partner.3) Check the answer.4. Check (√) the suggestions that are mentioned in the passage.1) Ask students to skim the passage and check the suggestions. 2) Let students read and translate this article to understand the main idea of the article.  Language pointsDo you take your own bag when shopping and not ask for a plastic bag? 当买东西时你是带上自己的袋子而不是要塑料袋吗？when＋doing，when为连词，由于主句和从句主语相同，故可省略从句中的主语和be动词。eg：When waiting for the train, he always plays his mobile games.     当他等火车时，他总是玩他的手机游戏。What do you do with the bottles when they are empty? 你是怎样处理空瓶子的？do with 对付；与……相处  eg：The teacher didn't know what to do with the naughty pupil.教师不知道该怎样对付那个顽皮的学生。辨析 do with与deal with do with 常与what 连用。表示“处置”、“忍受”、“与……相处”等。eg：I don't know what they will do with the problem. (＝I don't know how they will deal with the problem.)我不知道他们将如何处理这个问题。eg：She is easy to do with.  她好相处。deal with 常与how 连用。表示“对付”、“应付”、“处理”、“论述”、“涉及”等。eg：This is a book dealing with Asian problems.  这是一本论述亚洲问题的书。3. Do you divide the waste into things to recycle and things to throw away?你将废品分成要回收利用的和要丢弃的吗？(1)divide是及物动词，意为“分开；分隔”。divide…into…意为“把……分成……”。如：Mr Wang divided his class into five groups. 王老师把他的班分成五个组。(2)throw away意为“扔掉；丢弃”，是“动词+副词”结构的短语，当宾语是代词时，代词要放在短语中间，如throw it /them away。e.g. When are you going to throw away those old magazines?     你打算什么时候扔掉那些旧杂志？  He has thrown away a good opportunity.  他已经失去了一个良好的机会。4.We all need a healthy environment,but we produce waste every day,and it is harmful to our environment. 我们都需要一个健康的环境，但是我们每天制造废物，这对我们的环境是有害的。harmful是形容词，表示“有害的”，其反义词是harmless (无害的)，其名词和动词形式都是harm(伤害；害处)。be harmful to意为“对……有害处”，相当于be bad for，其反义短语是be good for， 其近义短语是do harm to (对……造成伤害)。如：Watching TV too much is harmful to /does harm to your eyes. 看电视太多对你的眼睛有害处。5.Repeat these three words daily: reduce, reuse and recycle. 每天重复这三个词：减少、重复使用和回收。1)  daily /'deɪli/ adj.每日的；日常的adv.每日；每天 n.日报辨析everyday与dailyEveryday 只作形容词，修饰名词everyday English 日常英语daily 既可作形容词修饰名词，又可作副词修饰动词daily clothes 日常服装He gets up early daily (every day)．他每天起得早。2)  repeat v. 重说; 重新做前缀“re-”, 意思是“再, 重复”e.g. I repeated after the teacher word by word. 我跟着老师一个字一个字地读。3) reuse v. 再次使用; 重复利用e.g. She often reuses old envelopes.
    她经常重复使用旧信封。    The bottles can be reused up to 20 times.
  这些瓶子可重复使用达20次。 6.It is better to use china cups and cloth bags because they can be used many times. 用瓷杯和布袋更好，因为它们可以多次使用。It is better to do sth. 意为“最好做某事”。拓展：had better do sth. 意为“最好做某事”；had better not do sth. 意为“最好不要做某事”。it在这里作形式主语。作不定式的形式主语eg：It's not easy to get him to change his mind.   
    让他改变主意不容易。作that引导的从句的形式主语eg：It is obvious that we can't go on like this.
    我们显然不能像这样继续了作whether, when, what等引导的句子的形式主语eg：It doesn't matter whether you go or not. 你去不去没关系。作动名词的形式主语eg：It was nice seeing you. 看见你真好。7. Although it takes energy to change things into something else, it is better than throwing things away or burning them. 虽然把东西变成别的东西需要能量，但总比把东西扔掉或烧掉要好。 change … into …  把……变成……e.g. You can’t change iron into gold.  你无法把铁变成金子。change /tʃeɪndʒ/  v.变成；转换1）用作动词：change hands 转手 change seats   换座位change...for...意为“用……换……”。 eg：I'm thinking of changing my car for a new one.     我正考虑换辆新车。change...into...意为“把……变成(换成)……”。 eg：He changed his dollars into francs.      他把美元换成了法郎。2）用作名词，表示“变化”、“改变”，多用作可数名词，有时也可用作不可数名词。如：自1978年以来这里发生了巨大的变化。Great changes have taken place here since 1978.Much change has taken place here since 1978.8.We throw tons of rubbish away each year，and we have to make a change. 我们每年扔掉很多垃圾，我们必须要做出改变。ton是量词，意为“吨”。tons of 意为“许多；很多”。如：People eat tons of meat in the city every year. 这座城里的人每年吃很多肉。拓展：a ton of…意为“一吨……”；two tons of…意为“两吨……”。9. We cannot hope for rapid change,  but let’s take these simple steps  today… take steps 采取措施e.g. We need to take some steps to reduce pollution. 我们需要采取一些措施来减少污染。Step 3 Practice5.Find two things you should do and two things you should not do in the passage. Give reasons. Use your answers to write sentences.1) Let the students read the passage quickly find out the answer.2) Ask the students to check with a partner.3) Check the answer.6.Complete the passage with the correct form of the words in the box.1)  Ask students to find 9 words in activity 6 from the text.2)  Read the words together.3)  Complete the exercises in activity 6.4)  Ask the students to check with a partner.5)  Check the answers.Writing7.Work in pairs. Make a list of things you can do to make your school greener. 1)  Let students discuss the task in pairs.2)  Choose some students to show their answers.3)  Give encouragement and praise for good performance.Step 4 Homework Make a poster:将身边存在的浪费能源和破坏环境的现象记录下来，可以拍照并配以 英文说明  制作一张提醒人们注意节约能源和保护环境的海报。blackboard writing design Unit 2   Repeat these three words daily: reduce, reuse and recycle.Vocabulary divide, plastic, policy, reuse, bottle, throw away, repeat, reduce ,cloth, ton, tons of, rubber, rapid, step, grandson granddaughter.Sentences patternDo you turn off the lights when you leave the room?Do you take your own bag when sopping and not ask for aplastic bag?It is better to use china cups and doth bags because they cam be used many times.Although it takes energy to change things into something else..