初中英语Section A获奖课件ppt

这是一份初中英语Section A获奖课件ppt
Unit 4 The Wonders of NatureSection A（3a-4d）· 学习目标· 新课导入· 内容讲解· 课堂总结· 课后作业1. New words: waterfall, civilization, development, cubic, mile, pool2. Expressions: by the way; at all costs3. Sentences: ①We should protect them by all means. ②The noise of the water slowly grew louder and louder. ③It went on for as far as the eye could see. Do you know rivers in China?Yes/No...What’s the longest river in China?It’s...Do you know how long it is?....waterfall /ˈwɔːtəfɔːl/ n.瀑布civilization /ˌsɪvəlaɪˈzeɪʃn/ (=civilisation)n.文明 development /dɪˈveləpmənt/ n. 发展;壮大cubic /ˈkjuːbɪk/ adj.立方的mile /maɪl/ n.英里pool /puːl/ n.池塘;水坑Read the conversation and underline the three rivers mentioned.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.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.We should protect them by all costs.句意：“我们应该想尽一切办法来保护它们。” by all costs 不惜任何代价例句：You should by all costs attend the meeting tomorrow—it’s very important. 你务必参加明天的会议，它非常重要。1.—May I open the window to let some fresh air in? —______. It’s a bit stuffy here. A. By no means B. By all costs C. Never mind D. Take it easy2.完成句子。We should ________________（不惜任何代价）protect the environment for our future generations.Bby all costsWhat do Yaming and Ella know about these rivers? Read the conversation again and complete the table.China5,464Egypt6,671civilizationsListen to the conversation. Then role-play it.Imagine that you are Yaming or Ella. Continue the conversation with apartner about other geographical features in China.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 ...?Read the sentences. Circle the adjectives which compare things. Underline the adverbs which compare actions.Write or spell out the numbers.1. Mount Kilimanjaro is ________(five thousand, eight hundred and ninety-five) metres high.2.__________(twenty-five thousand, seven hundred and sixty-eight) cubic metres of water pours down Inga Falls each second.3. The East African Rift Valley is about 4,000 (_____________) miles long.4. The Taklimakan Desert has a total area of about 337,000 (________ _____________________________)square kilometres.5,89525,768four thousandthreehundred and thirty-seven thousandMy friends and I visited Victoria Falls in Africa last year. Visiting one of the world's ______________ waterfalls was a magical experience. As we went __________ to the falls, the noise of the water slowly grew ________ and louder.Complete the passage with the correct forms of the words in the box.largestcloserlouderThe noise of the water slowly grew louder and louder.句意：“水声慢慢变得越来越大。” louder and louder 越来越大比较级+and+比较级 越来越…… ，用于描述事物在程度上持续变化的趋势 例句：The days are getting longer and longer in summer. 夏天白天变得越来越长。 This movie is becoming more and more interesting. 这部电影变得越来越有趣。1.Our city is becoming ______. More and more people want to visit it. A. beautiful and beautiful B. more beautiful and more beautiful C. more and more beautiful D. more beautiful and beautiful2.适当形式填空。As winter comes, the weather is getting ______________ (cold).Ccolder and colderComplete the passage with the correct forms of the words in the box.farThen, right before our eyes, the waterfall appeared.It went on for as ________ as the eye could see. Later, we sat in a special pool at the top of the falls. There, we felt the water rush past us and become a part of the waterfall. It was the scariestbut also the ____________ experience of our trip!most amazingIt went on for as far as the eye could see.句意：“它一直延伸到目力所及的远方。” as far as + 从句，表示 “远到…… 的程度拓展：as+形容词/副词原级+as “和......一样”例句：The green fields went on for as far as the eye could see. 绿油油的田野绵延不绝，一眼望不到边。 She is as tall as her brother. 她和她哥哥一样高。1._______ the weather is concerned, we can go hiking tomorrow. A. As long as B. As far as C. As soon as D. As good as2.完成句子。这条河流向远方，一眼望不到尽头。（翻译句子）__________________________________________BThe river flows away as far as the eye can see.Write some questions to compare places. Then ask a partner your questions.What is the highest ...?Which park is bigger, ... or ...?Memorize the new words, expressions and sentences in Section A (3a-4d).Finish the exercises of the test paper on the book 5·3.