Unit 2 Remember three words: reduce, reuse and recycle. Pre-readingReadingLanguage pointsWriting Look at the pictures. Say which things are better for the environment and why. 1. It is better for Chinese people to buy Chinese products than products from abroad.2. It is better to use a lunch box and china cup than a paper bag and paper cup, because they are reusable. Paper cups can only be used once and have to be thrown away. 3. It is much better to recycle used things than burn them. In this way, we can use less energy; also, burning pollutes the air.返回目录返回目录 Look at the title of the passage and the words in the box. What suggestions do you think the passage will make? abroad energy last necessary plastic produce pollute recycle repair ×Check (√) the things you should do.1. buy the latest fashion2. choose local products3. waste energy when things are made √× 4. buy things from abroad5. repair things6. use paper cups and bags7. throw things away8. burn things√×××× Read the passage again and give reasons for what you should or shouldn’t do.1. You shouldn’t buy the latest fashions because it wastes energy to make them.2. You should choose local products because that saves energy. 3. You shouldn’t waste energy because it’s precious.4. You shouldn’t buy things from abroad because its costs a lot of energy to bring them to you.5. You should repair things because it saves resources. 6. You shouldn’t use paper bags and cups because they have to be recycled.7. You shouldn’t throw things away because they should be recycled.8. You shouldn’t burn things because that pollutes the air. 1. What can we reuse? We can reuse a lot of things, such as paper, water.2. What can be recycled? Paper, cloth, batteries and glass can be recycled.Work in pairs and answer the questions. 3. What can’t we throw away? If things can be used for a longer time, we shouldn’t throw them away.4. What takes a lot of energy to make? If things can be used for a longer time, we shouldn’t throw them away. 5. What pollutes the air and water? Things made out of plastic and rubber.返回目录返回目录 Language points1. Do you buy things produced locally instead of made abroad? 你是否买国产商品而不买进口商品呢？你是否买国产商品而不买进口商品呢？ instead of意为意为“代替代替, 而不是而不是……”, 其其后应接名词、代词或后应接名词、代词或v-ing形式。
本句中形式本句中instead of后面接过去分词后面接过去分词, 这是为了避免这是为了避免与前文重复而省略了与前文重复而省略了things如：如： I will go instead of you. 我替你去我替你去 He had a glass of water instead of tea. 他喝了杯水而没有喝茶他喝了杯水而没有喝茶 【【拓展拓展】】instead也有也有“代替代替, 顶替顶替”之意之意, 但两者的用法有区别但两者的用法有区别1) instead用作副词用作副词, 通常位于句末通常位于句末, 说明说明用用 来顶替的人或物来顶替的人或物如：如：Tony isn’t here. Let his father go instead. 托尼不在这儿，让他爸爸替他去吧托尼不在这儿，让他爸爸替他去吧2) instead of后面必须接宾语后面必须接宾语, 说明被代替说明被代替的人或物的人或物如：如： We’ll ask Li Mei instead of Mary. 我们要去问李梅而不问玛丽我们要去问李梅而不问玛丽。
2. do harm to sth./sb. 对对……有害处有害处 do good to sb./sth. 对对…… 有好处有好处如如: Alan would never do harm to his classmates. 3. Though we are young, we can still do something to help. 虽然我们年龄还小虽然我们年龄还小, 但我们还是能够做些但我们还是能够做些事情来帮助事情来帮助(保护环境保护环境) 在本句中在本句中though相当于相当于although, 表示前后表示前后两句为转折关系两句为转折关系, 但它不能和但它不能和but同时出现同时出现在一个句子中在一个句子中如：如： Though I failed, I’ll try again. = I failed, but I’ll try again. 虽然我失败了虽然我失败了, 但我还要再试一次但我还要再试一次 4. repair sth. if sb. can instead of doing sth. 如果能修理如果能修理……而不做而不做……如如: We should repair TV set if we can instead of buying new ones.repair和和mend都有都有“修理修理”的意思，但的意思，但它们的用法有区别它们的用法有区别: 1) repair是指需要一定的技术，对比较是指需要一定的技术，对比较复杂的东西进行复杂的东西进行“修理修理”。
它的宾语通它的宾语通常是汽车、房子、机器等常是汽车、房子、机器等 如如:Can you repair my TV set? 你你能修一下我的电视机吗？能修一下我的电视机吗？2) mend则指不用复杂的技术和工具进行则指不用复杂的技术和工具进行的的“修理修理”, 比如修补破洞比如修补破洞, 裂痕等它的宾语通常是衣服它的宾语通常是衣服, 桌椅和玩具等桌椅和玩具等如如: He often mends toys for his little brother. 他经常帮弟弟修玩具他经常帮弟弟修玩具 Exercises请根据各题后的要求改写下列句子请根据各题后的要求改写下列句子, 每空一词每空一词(含缩写含缩写)1. Maria practises playing the piano every day. (改为一般疑问句改为一般疑问句)____ Maria _______ playing the piano every day?Doespractise 2. The man is very rich, but he is not happy. (改为同义句改为同义句) _________________ the man is very rich, he is not happy. 3. You can use the cups again. (同上同上) You can _____ the cups.4. Read the book loudly. (改为否定句改为否定句) __________the book loudly.reuse Though / AlthoughDon’t read 5. It’s better to cross the street quickly now. (同上同上) It’s better _____ cross the street quickly now.6. She bought a shirt because it was nice and cheap. (对划线部分提问对划线部分提问) ________ she ___ a shirt?buynot toWhy did返回目录返回目录 Make a list of things you can recycleStep 1:newspaper glass bottlesdrink cans old clothesold electric equipments Step 2:Find power at homelights cooker fridge air condition oven 1. All of us take an active part in recycling2. programmes. We use or buy products3. made from recycled material. Such4. as……, Why do we recycle them?5. Because……(your opinion).2. We don’t waste things. It means that we save money and reduce pollution. how to do….(show your idea) Keeping the world green is our duty.Example writingExample writing返回目录返回目录 1. Finish making a poster.2. Master the key words and expressions.3. Learn to carry out 3R. Homework 。