Unit 5 Lesson 1 Starting out+Reading（讲解课件）-【优翼·学练优】2025-2026学年新教材七年级英语上册同步备课（外研版2024）

Unit 5 The power of plants Starting out + Reading Learning Objectives In this lesson you will: 1. know some facts about plants; 2. learn about the photosynthesis of plants; 3. talk about the plants and feel the greatness of plants. Look and Say Starting out 1 What facts about plants do you know? 2 Do you think plants are amazing? Why or why not? Look at the pictures and answer the questions. 1 What are the people doing? 2 What can plants do for us? She is buying vegetables. He is making wooden shelf. They are weighing herbs. She is painting outdoors. What can plants do for us? They can provide food. They can provide building materials. Some plants are medicine. They can make the environment beautiful. What facts about plants do you know? Some plants eat bugs. Many plants are used for medicine. Plants have different colours. Some plants are poisonous(有毒的). Pre-Reading Understanding ideas Look at the picture of a plant and match the words to it. sugar leaf sunlight water sunlight sugar water leaf Look at the picture and the title, predict the answer: What is the passage about? Predict Photosynthesis in plants. /ˌfəʊtəʊˈsɪnθəsɪs/光合作用 Watch the video to know about photosynthesis. Read the passage and match the main idea with each paragraph. Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 Plants produce substances(物质). How plants work. Introduce the Worker No. 55. The importance of plants. Workers in plants will have a rest. While-reading What is the structure of this passage? A B C ① ② ③ ④ ⑤ ① ② ③ ④ ⑤ ① ② ③ ④ ⑤ 总分总 Choose another suitable title and give your reasons. a How to make sugar b How plants work c Why plants are great d Going to the green workshop Complete the texts with the words and expression from the passage. Sunlight and CO2 come into the 1.________. 3._________ , CO2 and sunlight will turn into 4._______and oxygen. Oxygen is important to humans — they need it to 5._______. Water from the root will 2.________to the leaf through the stem. leaf Water rise up sugar breathe Think and Discuss 1. Are there real workers in the plants? What do the workers mean to a plant in real life? 2.Why does the writer use “workers” in the passage? No, the workers mean cells (叶绿体细胞). To make the passage more interesting and easier for the readers to understand. Think and Share 1.What does “plant” mean in the title? In the title, “plant” has a double meaning. Usually it means a living thing like a tree or flower. Here, it refers to a “factory” where “workers” make food for the plant and oxygen for us. A pun(双关语) is a word with more than one meaning. It’s a clever way to make the passage more interesting. 2. In what other ways do plants help the world? For people: provide food, clean the air and help stop the floods... For climate: reduce the effect of climate change... For animals: provide food and homes for animals... Language Points 1. Now workers from the Root send up water. send作动词,意为“寄,发送; 传达; 派遣”。 E.g. I’ll send you a text message. My parents send their love to me. 【拓展】 send for 派人去请      send sb. to do sth. 派某人去做某事 send out 分发 send up 发射 send sth. to sb.寄某物给某人 2. It means a lot to animals and humans, though—they need it to breathe! 不过，它对动物和人类来说意义重大——他们需要它来呼吸! 句中though用作副词，意为“可是，不过，然而"，用于为前面的句子增加对比或转折性的信息，常常被用在句子末尾。 E.g. It sounds like a lot of fun. Isn’t it very difficult though? I didn’t get the job. I learnt a lot, though. 3.They will take a rest. 他们将要休息了。 take a rest意为“休息”。 E.g. I’m going upstairs to take a rest. I’m tired, I need to take a rest. 4. They give more than food and oxygen. 它们提供的不仅是食物和氧气。 句中more than意为“不仅仅"，用来强调植物对自然界的重要性。 E.g.She is more than a friend to me. E.g. More than twenty classmates love drawing on weekends. 【拓展】more than还有“超过"的意思。 本文件著作权为创作公司所有, 仅限于教师教学及其他非商业性和非盈利性用途。如发现盗用、转卖、网络传播等侵权行为, 本公司将依法追究其相应法律责任。 部分素材选自网络, 如有争议, 请联系删改。 声 明 Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 $The amazing world of plants. Welcome to the world of plants. Are you ready for some amazing facts? Plants are everywhere, on land, in the ocean and even in space. That's cool, right? Plants can speak, but they have surprising power. Let's have a look. How much did you grow last year? Five centimeters? Ten centimeters? Well, the bamboo can grow ninety one centimeters in just one day. That's very fast. A lot. Our food comes from plants. People began to farm and grow their own food over ten thousand years ago. But plants are more than food. They can also keep us healthy. Like Green doctors, we use different plants to make medicines. Please look at the plants new and say hello. They are a great friends. 光合作用植物和其他生物一样，需要能量才能生存，但它们是通过阳光直接获取能量，而不是从食物中获取。这一过程被称为光合作用，就是通过阳光合成在一起的意思。在光合作用过程中，一株植物能通过叶子获取阳光中的能量，并通过水和二氧化碳将它转化成葡萄糖，葡萄糖可用作生命燃料或者成为机体生长的必要基本物质。光合作用是大自然中最重要的生命过程，如果没有光合作用，植物就不能生长，如果没有植物，动物就不能生存。在光合作用的过程中，经由叶片上的气孔吸入二氧化碳，并由根部吸收水分，在阳光的照射下将二者转变成葡萄糖，同时产生附属产物氧气。然后葡萄糖从叶子被运往植株各部位，同时氧气被释放到空气中。植物包含一种绿色色素，称为叶绿素，这种色素在光合作用中至关重要，它能吸收阳光中的能量，并将将其转化成化学能量。不是所有的光都能被吸收，阳光中包含多种不同颜色的光，叶绿素只能吸收红光和蓝光，绿光被反射出去。这也是为什么我们看见植物是绿色的，植物不是唯一进行光合作用的生物，许多细菌也通过光合作用来获取能量，并且比植物的生存历史长的多。在这类简单生物中，最重要的一种叫做蓝细菌。植物中的叶绿素是由百万年前类似细菌的生物体进化而来的。 The amazing world of plants. Welcome to the world of plants. Are you ready for some amazing facts? Plants are everywhere, on land, in the ocean and even in space. That's cool, right? Plants can speak, but they have surprising power. Let's have a look. How much did you grow last year? Five centimeters? Ten centimeters? Well, the bamboo can grow ninety one centimeters in just one day. That's very fast. A lot. Our food comes from plants. People began to farm and grow their own food over ten thousand years ago. But plants are more than food. They can also keep us healthy. Like Green doctors, we use different plants to make medicines. Please look at the plants new and say hello. They are a great friends. The deluge wakes another forest inhabitant. This one is particularly a strawy in its bigger. IT can grow up to a meter a day, fast overtaking the other plants surrounded. The toilet IT grows the faster it's growth. great. So that in a matter of days IT towers above the undergrowth and continues reaching for the sky. Not bad, but what is essentially a grass? It's bamboo. Given the chance, bamboo will create immense forests dominating entire areas. Bamboo forests occur across south west china, all the way to shanghai, but probably the highest diversity of bamboo in the world is found on the hills and valleys of union. Though incredibly strong, bamboo have hollow stems, a perfect shelter for any creatures which can find a way in. Within quarter workshop, leave each collect root, sand, rise, stem mix, produce sugar, product. oxygen. human, though breathe soon, dark rest. natural . seed grow pot, rainforest culture council, health rose, causing bamboo, popular key news, prefer coffee, secret, husband, adult weekend, relax, yard, biscuit, connect. Within a plant, it's quarter past seven. He is worker number fifty five in his Green uniform. He's going to start work in the plant. He works in workshop, one thousand and one in the leaf. There are twenty to one hundred workers in each workshop. They collect sunlight and carbon dioxide during the day. Now workers from the root send up water. The water will rise up to the leaf through the stem. Then workers in the leaf will mix water, carbon dioxide and sunlight. What are they going to produce? Most importantly for them, there will be sugar. It's useful for the growth of the plant. Another product will be oxygen. But the plant doesn't need much of IT. IT means a lot to animals and humans, though they need IT to breathe. The workers work hard. Soon it's going to get dark. They will take a rest. There are millions of plants on earth. They give more than food and oxygen. Without plants, the natural world would be very different.