Unit4 reduce reuse recycle作业题（词汇、单选、课文核心句） 2026-2027学年人教版英语九年级下册

九年级下册Unit4 reduce reuse recycle作业题（词汇、单选、课文核心句） 2026-2027学年新版人教版全国 一、单词词性变化 单句填空（20 题） 1. (可回收的) These bottles are ________ and can be collected again. 2. (减少) We need a ________ in the use of plastic bags. 3. (可重复使用的) We should use ________ shopping bags instead of plastic ones. 4. (污染) Light ________ is also bad for our life. 5. (被污染的) The ________ river is no longer safe for fish. 6. (保护) We should do something for the ________ of wildlife. 7. (有害的) Plastic is ________ to sea animals. 8. (产品) This factory makes many wooden ________. 9. (浪费的) It is ________ to leave lights on when no one is in the room. 10. (无用的) This broken toy is ________, throw it away. 11. (节约) Energy ________ helps us cut down costs. 12. (分离) The ________ of rubbish helps recycle things well. 13. (分开地) Please put glass and paper ________. 14. (破坏) The ________ of forests brings many problems. 15. (发明物) This useful ________ helps separate waste easily. 16. (发明家) The ________ created a new recycling machine. 17. (自然的) We should enjoy the ________ beauty around us. 18. (不可能的) It is ________ to finish the work without help. 19. (差异) What’s the ________ between reuse and recycle? 20. (木制的) The box is made of ________ materials. 二、单项选择 20 题 ( )1. Lots of waste paper ______ to make new paper every year. A. recycle B. is recycled C. recycled D. was recycled ( )2. We should separate rubbish ______ different groups. A. into B. from C. for D. to ( )3. Too much plastic will do harm ______ sea life. A. for B. to C. on D. at ( )4. We can cut ______ waste by reusing bottles. A. off B. up C. down D. out ( )5. Remember ______ off the tap when you brush teeth. A. turn B. turning C. to turn D. turned ( )6. This table ______ wood, you can see the wood clearly. A. is made of B. is made from C. made of D. made from ( )7. The bad habits can lead ______ serious pollution. A. for B. to C. in D. at ( )8. Great changes ______ in our city since we started environmental protection. A. take place B. took place C. have taken place D. are taken place ( )9. Everyone can make a ______ if we take small actions. A. different B. difference C. differences D. difficulty ( )10. Many old clothes ______ for recycling last month. A. collect B. collected C. were collected D. are collected ( )11. It’s good ______ us to use reusable bags for shopping. A. for B. to C. of D. with ( )12. We are thinking ______ how to reduce food waste. A. over B. about C. for D. at ( )13. Waste should ______ into different kinds before recycling. A. separate B. be separated C. separated D. separating ( )14. We should stop people ______ throwing rubbish everywhere. A. from B. to C. for D. of ( )15. Paper is made ______ wood, we can’t see wood in paper. A. of B. from C. in D. by ( )16. He took part ______ the school environmental club last term. A. in B. on C. at D. for ( )17. We need to take ______ to protect our earth right now. A. action B. actions C. act D. acts ( )18. Nothing ______ if we do nothing to protect the environment. A. will change B. changed C. was changed D. were changed ( )19. Reusable bags are used ______ plastic bags. A. instead B. instead of C. replace D. replacing ( )20. We must stop ______ water. It’s very valuable. A. waste B. to waste C. wasting D. wasted 三、课文核心句子短语句型挖空（10 题） 1. 我们可以采取行动减少污染。 We can ______ ______ to ______ ______ pollution. 2. 垃圾应该在回收前被分类。 Waste ______ ______ ______ into different kinds before recycling. 3. 塑料对海洋生物有害。 Plastic ______ ______ ______ sea animals. 4. 每个人的微小行动都能带来影响。 Everyone’s small actions can ______ ______ ______. 5. 这张桌子由木头制成，你能看见木头纹理。 The table ______ ______ ______ wood. You can see the wood. 6. 太多的塑料会导致严重的污染。 Too much plastic can ______ ______ serious pollution. 7. 记得离开房间时关掉电灯。 Remember ______ ______ ______ the lights when you leave the room. 8. 我们应该用可重复使用袋子代替塑料袋。 We should use reusable bags ______ ______ plastic bags. 9. 很多旧衣服上个月被收集起来回收利用。 Lots of old clothes ______ ______ for recycling last month. 10. 我们应该阻止人们到处乱扔垃圾。 We should ______ people ______ throwing rubbish everywhere. 参考答案 一、答案 + 解析 1. recyclable 【解析】可回收的；recycle v.→recyclable adj. 2. reduction 【解析】减少；reduce v.→reduction n. a reduction in … 的减少 3. reusable 【解析】可重复使用的；reuse v.→reusable adj. 修饰 bags 4. pollution 【解析】污染；pollute v.→pollution n. light pollution 光污染 5. polluted 【解析】被污染的；pollute→polluted adj. 修饰 river 6. protection 【解析】保护；protect v.→protection n. the protection of … 的保护 7. harmful 【解析】有害的；harm→harmful adj. be harmful to 对…… 有害 8. products 【解析】产品；produce v.→product n. many 后接复数 9. wasteful 【解析】浪费的；waste→wasteful adj. It is wasteful to do 10. useless 【解析】无用的；use→useless adj. 11. saving 【解析】节约；save v.→saving n. energy saving 节能 12. separation 【解析】分离；separate v.→separation n. 13. separately 【解析】分开地；separate→separately adv. 修饰动词 put 14. destruction 【解析】破坏；destroy v.→destruction n. 15. invention 【解析】发明物；invent v.→invention n. 16. inventor 【解析】发明家；invent v.→inventor n. 17. natural 【解析】自然的；nature n.→natural adj. 修饰 beauty 18. impossible 【解析】不可能的；possible→impossible 反义词 19. difference 【解析】差异；differ v.→difference n. What’s the difference 20. wooden 【解析】木制的；wood n.→wooden adj. 修饰 materials 二、单选答案 + 解析 1.B 一般现在被动，paper 不可数，每年废纸被回收 2.A separate…into 把…… 分成几类；separate…from 把 A 和 B 分开 3.B do harm to 对…… 有害（固定搭配） 4.C cut down 减少；cut off 切断；cut up 切碎 5.C remember to do sth 记得要去做（还没做） 6.A be made of 看得出原材料；木头桌子肉眼可见木头 7.B lead to 导致 8.C since 引导现在完成时；take place 无被动语态 9.B make a difference 产生影响，固定短语，a 后单数名词 10.C last month 一般过去时被动，衣服 “被收集” 11.A It’s good for sb to do sth 对某人来说做某事有益 12.B think about 考虑；think over 仔细思考 13.B 情态动词 should + be + done，情态动词被动语态 14.A stop sb from doing 阻止某人做某事 15.B be made from 看不出原材料，纸由木头制成，看不到原木 16.A take part in 参加活动 / 俱乐部 17.A take action 采取行动（固定搭配，action 不可数） 18.A if 条件状语从句，主将从现 19.B instead of 代替，后面接名词 / 动名词 20.C stop doing sth 停止正在做的事，停止浪费水 单选答案汇总 1-5 B A B C C 6-10 A B C B C 11-15 A B B A B 16-20 A A A B C 三、 1. 答案：take action；cut down 解析：take action 采取行动；cut down 减少，本 2. 答案：should be separated 解析：情态动词被动语态 should be done；separate into 分类 3. 答案：is harmful to 解析：be harmful to = do harm to 对…… 有害 4. 答案：make a difference 解析：make a difference 起作用、产生影响，高频考点 5. 答案：is made of 解析：be made of，能看出原材料 6. 答案：lead to 解析：lead to 导致，to 是介词 7. 答案：to turn off 解析：remember to do 记得去做；turn off 关闭电器 8. 答案：instead of 解析：instead of 代替，后接名词 9. 答案：were collected 解析：一般过去时被动语态 10. 答案：stop; from 解析：stop sb from doing sth 阻止某人做某事 1 学科网（北京）股份有限公司 $