Unit7sectionA2a--2e 课件 2025-2026学年人教版七年级英语下册

null豆包AI生成回a→ ⑤ ,Section a activity to a, listen to the conversation and fill in the blanks with the correct adjectives. Hi fishing. How was your school trip to the wastwater plant was a boring? No. IT wasn't at all. IT was really interesting. Wow, what did you see? We saw the . plant make duty water clean again. really, how well. first dirty water from our homes goes into the plant. Then special screens remove large pieces of waste from the water. What happens next? Well, large machines . remove gms and other things from the water. These things are usually too small to sea. IT takes a few more steps after that before the water becomes clean again. Wow, I used to think IT was easy to get clean water. Me too. I didn't realize IT was so hard. 大家好，终于结束一天辛苦的工作了，我是已经变成了污水的小水晶。想必大家都很好奇，变成污水的我们又是怎样实现净化，回归自然的呢？通过污水管网，我们一路进入水质净化厂，在场内经过一系列的处理，最后被净化排入自然水体，再重新被人类抽取使用，形成水循环。那就让我们来一起看看吧。来到污水处理的第一站，预处理，经过间隙，从大到小的粗格栅、细格栅去除我们随身携带的纤维、塑料等固体杂物和漂浮物。而小的砂石则在沉沙池依靠自身重地留在池底。接下来进入第二站，二级处理，利用生化池里的微生物吃掉我们身上的污染物，进行脱氮、除磷和降解其他有机物。随着微生物的不断繁衍、更新和辛勤工作，我们变得更加干净，但仍剩余部分有机物和无机物尚待去除，同时还含有一定量的细菌等有毒有害物质。于是我们就来到了第三站进行深度处理，进入磁混凝沉淀池，接下来就看药剂和磁粉的了。他们会与我们进行物化反应，使悬浮物发生絮凝作用，逐渐形成大絮团向下沉淀，并继续降低我们身体中的总磷含量。我们继续前行，通过上层出水堰进入精密过滤器，将体内更微小的悬浮物节流。最后为了保障我们的健康，还会进行消毒杀菌。当各项指标达到可排放标准后，就可以通过出水口到河流中去了。大自然还会进一步将我们进化浠水，达到人类可再一次使用的要求。净水来之不易，大家可一定要珍惜水资源，爱护水环境哦。 Section A What was your special day like? (2a—2e) Unit 7 A Day to Remember Learning objectives At the end of this class, you will be able to: 1. ask and talk about school trip with the simple past tense; 2. understand the clean water doesn’t come easily and know the importance of protecting the environment and saving water. 2 Discussion Do you remember your last school trip? Where did you go? What did you do there? Do you think it was a great trip? Why? Lead in Where did they go? What did they do? They went to a farm. They fed the chickens and ducks. go—went feed—fed Lead in Where did they go? What did they do? They went to a zoo. They saw different animals. see—saw Lead in Where did they go? What did they do? They went to a museum. They learnt/learned about the past. learn—learnt/learned the wastewater plant 污水处理厂 dirty water large machines A wastewater plant is like a cleaning factory (大型清洁工厂) for dirty water. Lead in Where did Fu Xing go? What did she do? Do you know how the wastewater plant works? Listen to a conversation between Helen and Fu Xing. Fu Xing went on a school trip to a wastewater plant. Let's find out what he saw and what he learned from the trip. Listen and answer the questions. 1. How did she feel about this trip to the wastewater plant ? Boring Interesting amazing 2. What did she see there? She saw the plant make again. dirty water clean Helen: Hi, Fu Xing. How was your school trip to the wastewater plant? Was it boring? Fu Xing: No, it wasn’t at all. It was really interesting! Helen: Wow! What did you see? Fu Xing: We saw the plant make dirty water _______ again. Helen: Really? How? Fu Xing: Well, first, _______ water from our homes goes into the plant. Then, special screens remove large pieces of waste from the water. Helen: What happens next? Fu Xing: Well, _______ machines remove germs and other things from the water. These things are usually too _______ to see. It takes a few more steps after that before the water becomes clean again. Helen: Wow! I used to think it was _______ to get clean water. Fu Xing: Me too! I didn’t realize it was so _______. clean dirty large small easy hard Linking words make it clear and logical. 2a Listen to the conversation and fill in the blanks with correct adjectives. How many steps does it take before the water becomes clean again? A.remove small things from the water. B.it was easy to get clean water. C.dirty water clean again. D.remove large pieces of waste from the water. E.into the plant. 1.The plant makes 2.Dirty water goes 3.Machines inside the plant 4.Screens inside the plant 5.Helen used to think 工厂(n.) 机器(n.) 筛网(n.) used to do sth. 过去常常… remove…from… 把…从…中移除 大块垃圾 2b Read the conversation and match the sentence parts. process of turning dirty water in to clean water Helen’s feeling Last week, Fu Xing’s class went on a school trip to a __________ plant. The plant turned dirty water into clean water. Fu Xing learnt about the cleaning process: First, dirty water goes from people’s _______ to the plant. Then the plant uses screens to remove large pieces of _______ from the dirty water. Next, large _________ clean the water. They remove _______ and other small things. It takes a few more _____ before the water becomes clean again. wastewater homes waste machines germs steps 2c Complete the summary of the conversation in 2a. Helen: Hi, Fu Xing. How was your school trip to the wastewater plant? Was it boring? Fu Xing: No, it wasn’t at all. It was really interesting! Helen: Wow! What did you see? Fu Xing: We saw the plant make dirty water clean again. Helen: Really? How? Fu Xing: Well, first, dirty water from our homes goes into the plant. Then, special screens remove large pieces of waste from the water. Helen: What happens next? Fu Xing: Well, large machines remove germs and other things from the water. These things are usually too small to see. It takes a few more steps after that before the water becomes clean again. Helen: Wow! I used to think it was easy to get clean water. Fu Xing: Me too! I didn’t realize it was so hard. What did you see? How did you feel? What did you learn? Where did you go? Analyze Thinking Is it easy to make dirty water clean? What can we do to help save water? save the water reuse the water Helen: Hi, Fu Xing. How was your school trip to the wastewater plant? Was it boring? Fu Xing: No, it wasn’t at all. It was really interesting! Helen: Wow! What did you see? Fu Xing: We saw the plant make dirty water clean again. Helen: Really? How? Fu Xing: Well, first, waste water from our homes goes into the plant. Then, special screens remove large pieces of waste from the water. /ˈweɪstˌwɔːtə/ n. 废水 waste v. / n. 浪费 /plɑːnt/ n. 工厂 not at all 一点也不 /rɪˈmuːv/ v. 移开，拿走 remove ... from ... 从......移开...... n. 隔板 Pay attention to the expressions. Helen: What happens next? Fu Xing: Well, large machines remove germs and other things from the water. These things are usually too small to see. It takes a few more steps after that before the water becomes clean again. Helen: Wow! I used to think it was easy to get clean water. Fu Xing: Me too! I didn’t realize it was so hard. /məˈʃiːn/ n. 机器 /dʒɜːm/ n. 微生物，细菌 too ... to... 太......以至于不.... so... that ... 太......以至于...... used to do sth. 过去常常做某事 It’s + adj. (+for sb.) to do sth. (对某人来说）做某事是...... /step/ n. 步骤，脚步 /ˈriːəlaɪz/ v. 认识到，实现 Pay attention to the expressions. Helen: Hi, Fu Xing. _______________to the wastewater plant? _________? Fu Xing: No, it wasn't at all. __________________! Helen: Wow! What did you see? Fu Xing: We saw the plant _____dirty water _______ again . Helen: Really? How? Fu Xing: Well, first, dirty water _____ our homes _____ the plant. Then, special screens remove ___________ from the water. Helen: ___________________? Fu Xing: Well, large machines remove ___________from the water. These things are usually ____________. It takes a few more steps after that before the water becomes clean again. Helen: Wow! __________________it was easy to get clean water. Fu Xing: Me too! __________________it was so hard. 2d theatre factory zoo museum farm forest marrket park It was ... How was your school trip? Where did you go? We went to the theatre to watch a show. Talk about a school trip How was it? Where did you go? What did you see and do? How did you feel? What did you learn? ………. /ˈθɪətə(r)/ n. 剧院 /ˈfæktri/ n. 工厂 factory通常指轻工业或消费品生产的通用工厂。 plant多用于重工业、能源生产或大型综合设施。 Talk about a school trip you took to a special place. 2e 按要求写出正确的单词、词组或句子。 旅行 (名词) __________ 2. 废水工厂 (短语) ___________ 3. 移走（动词) __________ 4. 一片(短语) __________ 5. 废弃物(名词) __________ 6. 机器 (名词) __________ 7. 微生物（名词）__________ 8. 步骤（名词）___________ 9. 过去常常做某事（短语） ___________________________ 10. 将大块废弃物从水中分离。 _______________________ 11. 这要花费更多几步。___________________ 12. 东西太小以至于看不见。 ________________________________________ trip wastewater plant remove a piece of waste machine germ step used to do sth Remove large pieces of waste from the water. It takes a few more steps. These things are usually too tiny to see. Practice Practice 根据汉语提示完成下面的句子,每空一词 1.这个故事一点也不有趣。 The story _______ interesting _______ _______. 2.我太累了,无法做家庭作业。 I am _______ tired _______do my homework. 3.我们需要再多一些人来做这项工作。 We need _______ _______ _______ people to do the work. 4.杰克过去常常步行去上学 Jack _______ _______walk to school. isn’t at all too to a few more used to Thank You! Lavf58.20.100 Packed by Bilibili XCoder v2.0.2 null 69066.68 $排铁货浆 手 ←因国 博物筋> CAIC7EHT 豆包AI生成