Unit4 Reduce, Reuse, Recycle Section A课时同步练习2026-2027学年人教版英语九年级下册

**基本信息** 初中英语Unit4同步练习，按“夯实基础-能力进阶-拓展提高”分层，覆盖词汇、语法、语用及语篇应用，助力单元复习中语言能力与思维品质提升。 **分层设计** |层次|知识覆盖|设计特色| |----|----------|----------| |夯实基础|核心词汇（汉译英、词形变换）|通过单词、短语及词形转换，巩固单元基础语言知识| |能力进阶|语法应用（单句填空、句型转换）、情景交际|结合宾语从句、状语从句等语法点，通过补全对话提升语用能力| |拓展提高|语篇理解（精读、拓展阅读）、微写作|通过阅读推断、简答及主题写作，培养综合语言运用与思维能力|

Unit4 Reduce, Reuse, Recycle Section A（1a‑2d）同步练习 建议用时：25分钟 一、单词汉译英 1.烟雾 ________ 2. 化学物质 ________ 3. 废气 ________ 4.废弃物；垃圾 ________ 5. 土壤 ________ 6. 工厂 ________ 7.全球变暖 ________ 二、短语汉译英 1.空气污染 ________ 2. 土壤污染 ________ 3. 水污染 ________ 4.有害的化学物质 ________ 5. 全球变暖 ________ 三、词形变换 1. pollute (v.) → ________ (n. 污染)；________(adj. 被污染的) 2. chemical (n.) → ________(复数) 3. harm (v./n.) →________ (adj. 有害的)；________(adj. 无害的) 4. global (adj.) → ________(n. 地球；全球) 5. waste (n.) → ________(adj. 废弃的) 一、单句填空 1. Air ________ (pollute) is becoming more serious in some big cities. 2. Some ________ (chemical) from factories are bad for our health. 3. The ________ (harm) waste gas makes people feel sick. 4. People worry about ________ (globe) warming these years. 5. Too much ________ (waste) is bad for land and water. 二、句型转换（每空一词） 1. Factories produce lots of harmful waste gas.（改为被动语态） Lots of harmful waste gas ________ ________ by factories. 2. The bad air is bad for people’s health.（改为同义句） The bad air ________ people’s health. 3. Cars and planes cause air pollution.（对划线部分提问） ________ ________ air pollution? 4. Waste chemicals get into water. It pollutes the river.（合并为状语从句） Waste chemicals get into water, ________ it pollutes the river. 5. I’m worried about land pollution.（改为宾语从句，I think…） I think ________ land pollution is a big problem. 三、选词填空 【smog, chemical, waste, soil, global】 1. Thick ________ covers the city on bad‑air days. 2. Some dangerous ________ from factories pollute the rivers. 3. We should not throw too much ________ everywhere. 4. Farm ________ becomes less good because of pollution. 5. More and more people are trying to stop ________ warming. 四、情景补全对话（5 个空，6 个选项，1 项多余） A. What kind of pollution are you worried about B. What causes the air pollution C. What bad influence does it bring D. Do you think we can solve these problems E. What should we students do then F. Will there be no pollution in the future A: Hi, Sam! 1.________ B: I’m really worried about air pollution. A: 2.________ B: Much waste gas from cars, planes and factories causes it. A: 3.________ B: It is bad for our health and makes global warming worse. A: 4.________ B: Yes. But it needs everyone’s hard work. A: 5.________ B: We can take buses more and try to produce less waste. Passage1 单元主题精读 There are many different kinds of pollution around us. Air pollution comes from cars, planes and factories. They send out waste gas and smog into the sky. Land pollution is mainly from all kinds of waste. When waste and harmful chemicals get into soil, farm land will become poor. Water pollution happens when waste from homes and factories runs into rivers or lakes. All these kinds of pollution are bad for people, plants and animals. They also make global warming more serious. 任务一：单项选择 1. What does the underlined word “send out” mean? A. 排放；放出 B. 收到 C. 回收 D. 重复利用 2. What can we infer from the passage? A. Only factories make pollution, cars do no harm B. Harmful chemicals may pollute soil and water C. Water pollution has nothing to do with human waste D. Pollution has no influence on global warming 任务二：简答 1. What bad results will different kinds of pollution bring? _______________________________________________________________________________ Passage2 素养拓展阅读 Pollution is not only a problem for big cities. Small towns and villages also face such troubles. Many people know pollution is bad, but they do not know small daily actions can make pollution worse. If we want to protect our earth, we need to know the causes of pollution first. Then we can look for useful ways to change the situation. Everyone can play a small part. Small actions from many people will finally make a big difference. 任务一：单项选择 1. What is the writer’s opinion? A. Pollution only exists in big cities B. Small daily actions cannot influence pollution at all C. We should learn pollution’s causes before solving it D. Only government should solve pollution problems 2. What does “make a big difference” mean in Chinese? A. 产生很大影响 B. 制造很大噪音 C. 造成巨大伤害 D. 带来大量金钱 任务二：判断正误 (T/F) 1. Villages never meet pollution problems. (  ) 2. Everyone’s small actions can help protect our earth. (  ) 任务三：简答 1. What should we do first to solve pollution problems? _______________________________________________________________________________ 任务四：单元微写作（2‑3 句） Write about one kind of pollution you worry about. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 【参考答案】 夯实基础 一、单词汉译英 1.smog 2.chemical 3.waste gas 4.waste 5.soil 6.factory 7.global warming 二、短语汉译英 1.air pollution 2.land pollution 3.water pollution 4.harmful chemicals 5.global warming 三、词形变换 1.pollution; polluted 解析：pollute 动词污染；pollution 名词污染；polluted 形容词被污染的。 2.chemicals 解析：chemical 名词化学物质，复数 chemicals。 3.harmful; harmless 解析：harm 动词 / 名词伤害；harmful 有害的；harmless 无害的。 4.globe 解析：global 形容词全球的；globe 名词地球、全球。 5.wasted 解析：waste 名词废弃物；wasted 形容词废弃的。 能力进阶 一、单句填空 1.pollution 解析：air pollution 空气污染，名词作主语。 2.chemicals 解析：some 后接可数名词复数。 3.harmful 解析：形容词修饰名词 waste gas。 4.global 解析：global warming 全球变暖，形容词修饰 warming。 5.waste 解析：waste 垃圾，不可数名词。 二、句型转换 [1.is](1.is) produced 解析：一般现在时被动语态，gas 不可数，be 动词用 is。 2.harms 解析：be bad for = harm，主语 air 不可数，一般现在时三单。 3.What causes 解析：对事物主语提问用 what。 [4.so](4.so) 解析：so 引导结果状语从句。 5.that 解析：that 引导宾语从句。 三、选词填空 1.smog 2.chemicals 3.waste 4.soil 5.global 四、情景补全对话 答案：1.A 2.B 3.C 4.D 5.E；多余项：F 解析： 1. 答句回答担心空气污染，选 A； 2. 答句讲污染成因，选 B； 3. 答句讲带来的坏影响，选 C； 4. 答 Yes，询问能否解决，选 D； 5. 答句讲学生可以做的行动，选 E。 拓展提高 Passage1 任务一：1.A 2.B 任务二简答：It is bad for people, plants, animals and makes global warming worse. Passage2 任务一：1.C 2.A 任务二：1.F 2.T 任务三简答：We should first know the causes of pollution. 任务四范文： I worry about water pollution. Dirty waste pollutes our rivers. We should try our best to protect clean water. Unit4 Reduce, Reuse, Recycle Section A（3a‑4c ）同步练习 建议用时：25分钟 一、单词汉译英 1.回收利用 ________ 2. 再使用 ________ 3. 减少 ________ 4.包装 ________ 5. 捐赠 ________ 6. 垃圾处理中心 ________ 7.分类 ________ 二、短语汉译英 1.3R 原则（减少、再利用、回收） ________ 2. 垃圾分类 ________ 3.垃圾处理中心 ________ 4. 减少垃圾 ________ 5. 捐赠旧物品 ________ 三、词形变换 1. recycle (v.) →________ (n. 回收利用)；________(adj. 可回收的) 2. reuse (v.) → ________(n. 再利用) 3. reduce (v.) → ________(n. 减少；降低) 4. pack (v.) → ________(n. 包装) 5. sort (v.) → ________(n. 分类) 一、语法单句填空（宾语从句 / 状语从句：as soon as /unless/while /if） 1. I know ________ recycling is helpful for our environment.（that / unless） 2. We cannot make our earth better ________ everyone works together.（unless / as soon as） 3. ________ we get rubbish, we should sort it.（As soon as / While） 4. ________ recycling is useful, not everything can be recycled.（While / If） 5. I wonder ________ we should reuse these old plastic bottles.（whether / so） 二、句型改写（宾语从句、状语从句转换，每空一词） 1. Not everything can be recycled. I know that.（合并宾语从句） I know ________ not everything ________ be recycled. 2. You won’t protect the environment. You don’t change your daily habits.（用 unless 合并） You ________ protect the environment ________ you change your daily habits. 3. He arrived at the waste disposal centre. He sorted rubbish at once.（as soon as 合并） As soon as he reached the waste disposal centre, he sorted rubbish at once. 三、选词填空 【recycle, reuse, reduce, sort, donate】 1. We can ________ paper, glass and metal to make new things. 2. Try to ________ waste by buying things with less packaging. 3. We should ________ old bottles and bags instead of throwing them away. 4. Please ________ your rubbish before you throw it into bins. 5. You can ________ your old clothes to people in need. 四、情景补全对话（5 个空，6 个选项，1 项多余） A. What are the three Rs B. Which things can we recycle C. Can all waste be recycled D. What can we do to reduce waste E. What items can we reuse F. Should we throw away old clothes A: Hi, Amy! I learn about the three‑Rs today. 1.________ B: They are reduce, reuse and recycle. A: 2.________ B: We can buy things with less packaging and buy only what we need. A: 3.________ B: Glass bottles, paper and plastic can be recycled. A: 4.________ B: No. Some waste cannot be recycled at all. A: 5.________ B: We can reuse bottles, bags and donate old clothes. Passage1 单元主题精读 The three Rs — reduce, reuse, recycle are useful rules for us. Reduce means making less waste. We can buy goods with less packaging and buy only the food we really need. Reuse means using items again. Old glass bottles, plastic bags, clothes and books can be reused or donated. Recycle means turning waste materials into new products. Paper, glass and metal are common recyclable things. But we should remember that not all rubbish can be recycled. Reduce is the first and most important step among the three. 任务一：单选 1. What is the most important step of three Rs? A. Reduce B. Reuse C. Recycle D. Throw away 2. What can we infer from the passage? A. All kinds of rubbish can be recycled B. Buying over‑packaged goods helps reduce waste C. Donating old clothes is a way of reuse D. We can only recycle plastic bags 任务二：简答 1. What does “reduce” mean according to the text? _______________________________________________________________________________ Passage2 素养拓展阅读 A waste disposal centre deals with lots of rubbish from homes, schools and businesses. Workers sort the rubbish first. Recyclable materials are collected to make new goods. Some waste will be burnt for energy. Food waste can be made into fertilizer to help plants grow. Waste sorting is the key step. If people mix different rubbish together, it will be much harder to reuse or recycle them. So good sorting from ordinary people is very important. 任务一：单选 1. What is the first step in a waste disposal centre? A. Burn all rubbish at once B. Sort different kinds of rubbish C. Throw everything into soil D. Sell all waste for money 2. Food waste can be ________. A. made into fertilizer for plants B. only burnt and thrown away C. turned into new paper D. turned into new metal 任务二：判断正误 (T/F) 1. Mixed rubbish makes recycling work harder. (  ) 2. Recyclable rubbish can be made into new products. (  ) 任务三：简答 1. Why should we sort rubbish before throwing it away? _______________________________________________________________________________ 任务四：微写作（2‑3 句） Talk about what we can do with the three Rs. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ 【参考答案】 夯实基础 一、单词汉译英 1.recycle 2.reuse 3.reduce 4.package 5.donate 6.waste disposal centre 7.sort 二、短语汉译英 1.the three Rs (reduce, reuse, recycle) 2.sort waste / waste sorting 3.waste disposal centre 4.reduce waste 5.donate old items 三、词形变换 1.recycling; recyclable 解析：recycle 动词回收；recycling 名词回收；recyclable 形容词可回收的。 2.reuse 解析：reuse 动词再利用；reuse 名词再利用。 3.reduction 解析：reduce 动词减少；reduction 名词减少。 4.package 解析：pack 动词打包；package 名词包装。 5.sorting 解析：sort 动词分类；sorting 名词分类。 能力进阶 一、语法单句填空 1.that 2.unless [3.As](3.As) soon as 4.While 5.whether 二、句型改写 1.that; can 解析：that 引导宾语从句，语序不变。 2.won’t; unless 解析：unless“除非，如果不” 引导条件状语从句。 [3.As](3.As) soon as he reached 解析：as soon as 引导时间状语从句。 三、选词填空 1.recycle 2.reduce 3.reuse 4.sort 5.donate 四、情景补全对话 答案：1.A 2.D 3.B 4.C 5.E；多余项：F 解析： 1. 答句解释 3R 含义，选 A； 2. 答句讲减少垃圾的做法，选 D； 3. 答句讲可以回收的物品，选 B； 4. 答句 No，询问是否全部可回收，选 C； 5. 答句讲可以再利用的物品，选 E。 拓展提高 Passage1 任务一：1.A 2.C 任务二简答：Reduce means producing /making less waste. Passage2 任务一：1.B 2.A 任务二：1.T 2.T 任务三简答：Because mixed‑up rubbish will make recycling much harder. 任务四范文： We should follow the three Rs. We need to reduce waste, reuse old things and recycle materials. Small actions can protect our environment. 学科网（北京）股份有限公司 $