Unit4 Section A 2a-3d课件2025-2026学年人教版英语八年级下册

UNIT 4 The Wonders of Nature Section A 2a-3d 1. Fendouzhe reached ______________. 2. The deep sea begins at ______________. 3. The Titanic rests at ____________. 4. A whale can dive to _________________. 2a What do you know about the deep sea? Complete the sentences with the information from the picture. 潜水 10,909 metres 200 metres 3,800 metres over 2,000 metres 2b A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss. □Where the deep sea begins □Why people are researching the deep sea □Which Chinese submersible dived deeper in the water than many others □What deep-sea animals are like □How everyone should protect the deep sea 潜水艇 2c Listen again. Complete the sentences with the facts from the conversation. 1. People still don't know much about the                         . 2. In           , China's Fendouzhe dived into the deep sea  and filmed it. 3. Some animals have unusual abilities. Some are             , but can “sea”. Some can even create their own               . 4. There is rubbish even at               metres deep. 2020 ocean floor blind  light 11,000 2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner. What is the largest shark in the deep sea? What is the bottom of the deep sea like? Why is it important to research the deep sea? 在……的底部 Read the conversation and answer the questions. 1. What waterfall do Yaming and Ella mention? 2. Why is the Yellow River called "yellow"? 3. Why are rivers important? The Hukou Waterfall. Because some parts of the river carry brown and yellow earth. Because Rivers helped ancient civilizations to develop. Exploration 3a 3b What do Yaming and Ella know about these rivers? Complete the information about the three rivers. River Country Length Feature Yellow River China _____ km the second longest river in ______ Yangtze River _______ _____ km the _______ river in China Nile River _______ _____ km the longest river in _______ China Africa 5,464 6,300 6,671 China longest Africa Both the Yellow River and the Nile River helped in the development of ancient ___________. civilizations Exploration Translate the key expressions 最长的河流 流经的距离最远 ……公里长 第二长 “the+序数词+最高级”表示“第……最……的” ……和……（两者）都 古代文明 call sb./sth. ... 把某人/物叫做…… 顺便说一下 了解/学习…… 无论如何 Explanation Yaming: Welcome back, Ella! How was your trip? Ella: It was great! We saw the Hukou Waterfall on the Yellow River. Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it's called the Yellow River? Ella: Because it's yellow? Yaming: Right. Some parts of the river carry brown and yellow earth. 欢迎回来 你的旅行怎么样？ 中国最长的河流 流经距离最远 第二长的 顺便问一下  do you know why...? 你知道为什么……吗？ 携带棕黄色的泥土 Ella: That's interesting! I like learning about rivers. My favourite is the Nile. Did you know it's the longest river in the world? Yaming: Yes, it's 6,671 kilometres long. It's very important in Egypt's history. Ella: That's right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they're still very important today. Yaming: Yes. In China, we even call the Yellow River our "mother river"! Ella: We should protect them at all costs. 世界上最长的河流 在埃及历史上 both A and B ……和……两者都 古代文明 help...to develop 帮助…发展 call...our "mother river" 把……称作我们的“母亲河” protect...at all costs 不惜一切代价保护…… Language Points 1. Both the Nile and the Yellow River helped ancient civilizations to develop. 尼罗河和黄河都促进了古代文明的发展。 学生们不但在操场上玩，也在教室里玩。 The students play both on the playground and in the classroom. 你和她都是学生。 Both you and she are students. (1) both...and... ……和……都；既……又…… 用来连接两个相同的句子成分，所连接的句子成分在句中可作主语、宾语、状语等。当连接两个名词或代词作主语时，谓语动词用复数形式。 Language Points 1. Both the Nile and the Yellow River helped ancient civilizations to develop. 尼罗河和黄河都促进了古代文明的发展。 两部电影都很感人。 Both movies are moving. 我们俩都更喜欢悦耳的音乐。 Both of us prefer smooth music. (2) both（反义词：neither两者都不） ① 形容词 两个；双方；两者都 后接复数名词。反义词 neither意为"两者都不"。 ② 代词 两个，两个都 常用于"both of+代词"或"both of+the/其他限定词+可数名词复数"结构中。both在句中作主语时，谓语动词用复数形式。 注意: both常位于连系动词be、助动词或情态动词之后，实义动词之前。 这俩男孩都来自农村。 Both of the boys are from the village. Language Points 2. We should protect them at all costs. 我们应用一切办法保护它们。 我们必须不惜一切代价保护这些河流。 We must protect the rivers at all costs. 我们应该不惜一切代价保证安全。 We should keep safe at all costs. at all costs 不惜一切代价,无论如何 介词短语,常位于句末,作状语 do sth at all costs 不惜一切代价做某事 must / should... at all costs 必须/应该不惜一切代价…… Language Points 3. helped in the development of ancient civilizations 促进了古代文明的发展 随着他事业的发展，他帮助了更多的人。 With the development of his business, he helped more people. 父母对他们孩子的成长产生很大影响。 Parents make a big difference to their children's development. development（不可数名词） 发展；壮大；成长 其动词形式为develop(发展；壮大)。 the development of... ……的发展 拓展: developed（形容词） 发达的 developing（形容词） 发展中的 a developed country 发达国家 a developing country 发展中国家 Ella: Could you tell me more about China, Yaming? Yaming: Sure! What would you like to know? Ella: What’s the biggest desert in China? Yaming: It’s the Taklimakan Desert. Ella: Do you know ...? Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China. 3d Elaboration Could you tell me more about China, Yaming? Sure! What would you like to know? What’s the biggest desert in China? It’s the Taklimakan Desert. Do you know how big the Taklimakan Desert is? It’s about 337,600 square kilometers. Are there any plants or animals there? Yes! There are some special plants and camels that can live in the dry environment. Is it dangerous to travel there? Sometimes. The sandstorms are strong, but it’s also a beautiful place. Could you tell me more about China, Yaming? Sure! What would you like to know? What’s the largest lake in China? It’s Qinghai Lake. It’s a beautiful saltwater lake in Qinghai Province. Do you know how large the Qinghai Lake is? It’s about 4,625 square kilometers. Is it a good place to visit? Yes! Many people go there to see the clear blue water and lovely birds.  Cool! I want to visit it one day.  carry　civilization　at all costs　part of　far 1.Tim chose the ____________ seat from the door.  2.To have a comfortable living environment， we should protect the earth ________________.  3.Last week， we studied different _____________ in history class.  4.You have to ____________ a phone so that we can call you at any time.  5.You can spend ________ the day doing exercise and playing sport.  farthest at all costs civilizations carry part of 用方框中所给词语的适当形式填空 Let’s practice 小红书：深耕教学的金老师｜关注我，获取更多精美课件～ 1. The main purpose of his holiday to Greece was to go ________ (dive). 2. Our school library is the ________ (large) one in the district, with a lot of different kinds of books. 3. The ________(deep) of the swimming pool is two metres, so you need to be careful. 4. The Dead Sea is the ________ (low) place on earth. 5. The national park covers an area of 500 ________ (square) kilometers. 6. Mount Qomolangma is still growing _______ (tall). 7. Many deep-sea animals are __________ (color) and strange. diving 用单词的适当形式填空。 largest depth colorful lowest square taller Let’s practice 小红书：深耕教学的金老师｜关注我，获取更多精美课件～ Thank you null 60916.37 $