Unit 4 Lesson 4（讲解课件）-【优翼·学练优】2025-2026学年八年级英语上册同步备课（人教版2024）

At first gLance, this may look like some sort of extraordinary under water world, but it's actually appalling. That's been magnified five hundred times. Pollen plays a crucial role in plant reproduction. The process of pollination involves these tiny grains going from the male part of one flower called the ana onto the female part of another called the stigma. When this happens, the genetic information contained inside the pollen is transferred from flower to flower. So pollination is basically ally the way the plants make babies, because they can't move around much. When IT comes to dating, flowers usually need help from their environment. Polin grains can travel on the wind or in the water, but they usually spread through a collaboration with other living creatures, such as in six birds, lizard and even some memory. He is a honeybee visiting a flower. The tiny polling grains stick to their Harry bodies very easily. This allows them to pollute up to five thousand flowers in a single day. Flowers and bees have evolved together over a millions of years, and plants have developed many ways of attracting bees in order to make use of their polar transportation services. And the most common way is to provide a drink of sweet sector for the visitors. Most plants make their sector easily available. However, some have designed much more complex dating strategies. For example, one type of south american orchard temporarily traps its guests and glues pollen onto their acts. As is often the case in romance, appearances can play a role. The beautiful shapes and colors of flowers evolved so they could grab the attention of passing pollinated. This book can tell where nextdoor is to be found by looking out for colors that catch her eye base, can see ultraViolet light. And some flowers have U. V necked guards. These are like buses, eyes that are invisible to us, but stand out vividly debates. There are also other ways to entice pollinators. Some flowers look and smell like bees. So that went an egg male lands in hope of mating. He ends up with pollen ducked to him. The more we learn about pollination, the more weird and wonderful IT becomes. And he is something really interesting. Every flower produces a unique electro magnetic field according to its shape and its heart above the ground. When a bee comes close enough, these, my new fields, caused tiny hairs on her body to bend, so SHE can actually sense flowers that are a few body links away from her. What's more, the electric charge can also cause pollen to jump right off the flower onto the bay before he have been lands on IT. Pollination is so important to us because we humans depend on plants dhana energy from the sun through photosynthesis, and turn t IT into staff that we find very useful, such as food. In fact, it's estimated that one out of every three bites that we ate is made impossible by polyus. Isn't an extraordinary that this process involves so many different things combining in such an intricate way, the sunlight, the rain, the flowers, the birds, the bees and you, the bake ber. Section b how are plants and animals connected with us? Section b activity one, be read the text and underlying the adjectives the writer uses to describe bees. We can't live without bees. Imagine you go to the supermarket in your area, but there are almost no fruits, vegetables, honey, milk, eggs or chocolate. How would you feel? Disappointed, angry, sad. At this moment, you realize people, plants and animals are all connected. We need each other to live. And bees are one of the best examples of this connection. Bees are very hardworking animals, and their greatest work is pollination. On one trip, they often visit fifty to one hundred flowers. As they fly from one flower to another, they take polin with them. This action helps plants grow. In fact, without their work, about eighty percent of the plants in the world cannot grow. For this reason, many scientists believe that bees are the most important animals on this planet. Bees are also one of the most interesting animals in the world. For example, they work hard together to make their homes. In order to store honey, they create honeycomb. Another interesting thing about bees is how they communicate. When a bee finds new food, IT uses a dance to tell the others where and how far away the food is. Bees play an important part in the ecosystem of our planet. However, the number of bees is dropping and scientists are worried. Bees need our help, and there is a lot we can do. Think about what you can do to protect one of the most amazing animals on earth. Little box. How worker bees make honey. Who makes honey? Honey bees due, of course. But making honey is a special job for worker honey bees. How do these bees make honey? They do IT together. Older worker bees slive the hive early in the morning. Their job is to gather nectar from flowers. They suck the sector with their long straw like tongues. Then they store IT in their . honey's omics. Honey bees have two stomach. The Normal stomach digests food. But the honey stomach is just for storing sector. These special stomach can hold a lot of nectar. Filing a honey's mach isn't an easy job. Bees must visit hundreds of flowers. That's a lot of flying. After the bees fill their honest stommick, they returned to the high. There they pass the sector to other worker bees. The news workers put the sector inside the honeycomb. Honeycomb is a group of small cells inside the hive. Then worker bees fan the lector with their wings. This drives IT slowly IT grows thick. The thick sweet liquid is now honey. The honey is an important food for the bees. They store extra honey in the honeycomb. They will eat IT in the winter. Making honey is hard work. The worker bees do IT together like a team. Little box. Unit 4 Amazing Plants and Animals Section B How are plants and animals connected with us? (1a-1f) & Vocabulary in Use Learning Objectives In this lesson, you will: 1. get key information about the importance of bees in nature and some interesting facts about bees. 2. talk about the connection between bees and humans and think about how to protect them. 3. write one more paragraph about bees according to the text. Guess the Riddle I’m busy every day, making sweet things in the way. I fly from flower to flower, with a yellow and black power. What am I ? I live in a house that’s made of wax, and I’ve got a job that never lacks. I dance to show where food can be found, and I’m important in nature all around. What am I? We are bees! Free Talk Share what you know about bees. What do bees look like? What types of bees are there? What can bees make? How do bees communicate? Are bees important? Why or why not? black and yellow stripes(条纹) with stinger(蜂刺) furry (毛茸茸的) make honey build the honeycomb(蜂巢) do the waggle dance and the round dance 跳摇摆舞和圆舞 help with pollination 帮助授粉 /ˈfɜːri/ /ˈstɪŋər/ /straɪp/ /ˈhʌnikəʊm/ /ˈwæɡl/ /ˌpɒlə'neɪʃ(ə)n/ drone雄蜂 queen bee蜂王 worker bee工蜂 /drəʊn/ lay eggs 产卵 mate with the queen bee 与蜂王交配 collect nectar(花蜜), make honey, build honeycomb... Pre-reading 1a Look at the title and the pictures below. Guess what the text is about. The text is about how bees are important for humans and nature. Skim Reading Read the text quickly and check your guess in 1a. Then match the correct main idea with each paragraph. Para.1 Para.2 Para.3 Para.4 The importance of bees. Lead-in to the topic. The problem the bees face and the call to action. Interesting facts about bees. Careful Reading Read the Para.1 and answer the question. Why does the author use the example of the supermarket at the beginning? Because the example can help readers follow the writer’s thought quickly and understand the connection between humans and bees. It’s a writing skill called Hypothetical Scenario（情景假设法）. It can help arouse the readers’ empathy（激发读者共鸣）. Read the Para.2 and find out how bees help plants grow. Bees visit flowers and collect nectar. pollen Bees take pollen to another flower. So pollination is done. Bees help with pollination. Read the Para.3 and fill in the chart. Bees’ behavior Purpose create honeycomb to communicate to store honey dance hive 蜂箱/蜂窝 honeycomb 蜂巢 Read the Para.4 and discuss the following questions. Why do you think the number of bees is dropping? climate change no flowers sick bees What can we do to protect them? more flowers pesticide-free (无农药) safe hives climate action 1b Read the text and underline the adjectives the writer uses to describe bees. Can you think of more adjectives to describe bees? 1c Read again and complete the mind map with the information from the text. pollination flowers plants grow create honeycombs to store honey use a dance to tell the others where and how far away the food is dropping Post-Reading 1d Discuss the questions. 1. Can you give another title for the text? 2. What other interesting facts do you know about bees? Bees: The Tiny Heroes of Our Planet Why Bees Matter More Than You Think 1. A beehive acts like an organised society, with each bee having a specific role. 2.Their wings beat 200 times per second, creating their iconic buzz. 3. What do you know about the connection between humans and other insects, such as ants and butterflies? Ants help keep soil healthy and nutrient-rich, which benefits plant growth. Some ants eat harmful bugs, protecting crops. Sometimes they carry seeds to new places, helping plants grow. 1e Imagine you are the writer. Write one more paragraph about bees and add it to the text. Match the theme. Be coherent with the last paragraph. Add new information. Use linking words.(For example, However,or Luckily...) Short and clear.(3-5 sentences) End with a strong idea.(e.g., "Let’s protect bees!") Sample Writing Luckily, everyone can help bees survive! Planting flowers like sunflowers or lavender in gardens gives bees more food. Also, avoid using chemical pesticides—they poison bees. Even small actions, like putting a bowl of water outside on hot days, can save thirsty bees. Remember, if we protect bees, we protect our future food too! 1f How do you understand the connection between plants, animals, and people? Think of some examples and then share them with a partner. A: We all know people and nature are connected. But can you give me an example of how they are connected? B: Sure. I visited a small town in Guangdong once. There are many large trees in the town. They are home to many birds. A lot of tourists come to see the trees and the birds ... Language Points 1. At this moment you realize people, plants, and animals are all connected... bees are one of the best examples of this connection. connect v. 关联；连接 常见用法： connect A with/to B 将A和B相连/ 联系起来 be connected with/to ... 与……相连；与……有关联 have a connection with... 与……有关联 in connection with 关于；与……相关 connected adj. 连接的；相关的 connection n. 联系；连接 e.g. The bridge connects the two cities. （这座桥连接了两座城市。） People often connect bees with hard work. （人们常把蜜蜂和勤劳联系在一起。） Diabetes is closely connected with unhealthy eating habits. （糖尿病与不健康的饮食习惯密切相关。） Bees have a deep connection with human food supply. （蜜蜂与人类食物供应有深刻关联。 ） 2. How would you feel? Disappointed? Angry? Sad? disappointed adj. 失望的 be disappointed with ... 对……感到失望 e.g. She was disappointed with her exam score. （她对考试成绩感到失望。） disappointing adj. 令人失望的（用于描述 事物、结果或人 让人感到失望的特性。） e.g. The movie had a disappointing ending. （这部电影的结局令人失望。） disappoint v. 使失望；使破灭 e.g. The movie disappointed me. （这部电影让我失望。） e.g. The rainy weather disappointed the tourists. （雨天让游客们很扫兴。） 3. In order to store honey, they create honeycombs. in order to 为了 ； 以便 （用于说明做某事的目的，后接动词 原形） e.g. She studies hard in order to pass the exam. （她努力学习为了通过考试。） 否定形式 "in order not to do sth." e.g. She spoke quietly in order not to wake the baby. （她小声说话，以免吵醒宝宝。) store 在本句中作动词，意为“储存” e.g. We store food in the fridge. （我们把食物储存在冰箱里。） The data is stored on a cloud server. （数据存储在云端服务器上。） store 还可作名词，意为“商店” a grocery store（杂货店） a clothing store（服装店） an online store（网店） e.g. This store sells fresh vegetables. （这家店卖新鲜蔬菜。） 4. Another interesting thing about bees is how they communicate. communicate v. 交流；沟通 communicate with sb. 与某人交流 e.g. Doctors must communicate with patients clearly. （医生必须与患者进行清晰的沟通交流。） communication n.交流；通信 e.g. Good communication is key to teamwork. （良好的沟通是团队协作的关键。） 5. Bees play an important part in the ecosystem of our planet. play a part (in sth.) 参与某事 e.g. Technology plays a part in modern education. （技术在现代教育中发挥作用。） e.g. Volunteers played a key part in saving pandas. （志愿者在救助熊猫中起了关键作用。） play one’s part to do sth. 尽自己的责任做某事 e.g. Everyone must play their part to save energy. (每个人都应尽己所能节约能源。) 6. You may not realize it, but frogs play an important role in our planet’s ecosystem. play a role (in ) 在……中发挥作用；扮演角色 e.g. AI plays a role in medical diagnosis. （AI在医疗诊断中发挥作用。） 可与play a part 互换 Parents play a crucial role in education. （父母在教育中起关键作用。） Vocabulary in Use 2a 1. habit height size weight 2. joy happiness fun enjoy 3. angry disappointed smart sad 4. appear look seem watch 5. honey milk juice bread Circle the odd ones. Then give your reasons. 其他均为液体 词性不同，其他均为名词 其他均为情绪类形容词 其他均为描述物体外在属性的名词 其他均为系动词 2b Add the endings -ance, -(t) ion, -ness, and -ity to form nouns. Use your dictionary. 1. act _____________ 3. kind _____________ 5. real _____________ 7. connect _____________ 9. communicate ____________ 2. good _____________ 4. appear _____________ 6. imagine _____________ 8. popular _____________ 10. important _____________ action goodness kindness appearance reality imagination connection popularity communication importance 2c Complete the sentences with the correct forms of the words in the box. appear disappoint imagine store weigh 1. I felt____________when my favourite flowers died. 2. After the rain, some mushrooms __________in the garden. 3. In my hometown, people often use bamboo baskets to ____________food. 4.What did you put in your luggage? It __________a ton. 5. I can't __________my life without my pets. They mean a lot to me. disappointed appeared store weighs imagine 2d Complete the passage with the correct forms of the words in the box. however important land planet protect You may not realize it, but frogs play an important role in our ___________ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. Many people know that frogs help to __________ farms by eating insects. __________, not everyone understands their __________in nature. Frogs can live on __________ and in water. Because of this, they are popular subjects in studies on climate change and the ecosystem. planet’s protect However importance land Lavf58.29.100 Bilibili VXCode Swarm Transcoder v0.7.45 $Hello, i'm really that busy being ever wondered who helped make the food you eat the answer buzz bugs like me and not just talking about honey, although we make that yummy runny stuff too think broccoli, tomatoes, apples. In fact, beats help provide about a third of what you eat, as well as bringing your garden to life. We do this by spreading polin between different parts of flowers and plants, allow them to grow seeds and fruit, or while flapping our wings two hundred times per second. In the U. K. There are over two hundred and fifty species made up honey solar and but moves. But right now, we're in serious trouble. In the last ten years, our U. K. Population has shrunk by a around a third. That's because our habitat of being destroyed as changes in the climate and some hives are being attacked by viruses. chemicals used to protect crop from the insects of water, being blamed for some UK species haven't disappeared completely. And it's not just here. The us. Recently added seven types of b to its list of endangered species. But humans are taking action to help us survive, because if we're not here to help make your vegetables and fruit grow, you guys could find yourselves they have very steady situation.