Unit 7 Lesson 38 课件 2024-2025学年冀教版英语八年级下册

Unit 7 Know our world Lesson 38 The World Is a Big Place planet billion total increase surface Indian Atlantic Arctic n. 行星 n. 十亿;千兆 n. 总计;总数adj. 总的;总计的 v. 增加;增大 n. 表面;表层 adj. 印度的 n. 印度人 n. & adj. 大西洋(的) n. & adj. 北极的 Words and expressions Words planet billion total increase surface Indian Atlantic Arctic n. 行星 n. 十亿;千兆 n. 总计;总数adj. 总的;总计的 v. 增加;增大 n. 表面;表层 adj. 印度的 n. 印度人 n. & adj. 大西洋(的) n. & adj. 北极的 Words and expressions Words 1.地球是一个很特殊的星球。 2.总计,合计,总共 总数为…… 我们班总共有30个学生。 3.三十亿年 几十亿年 4.增加了……倍或百分之…… 增加到了…… 价格增加了百分之三十。 人口增长到了60亿。 5. 地球的表面 1.The earth is a very special planet. 2. in total a total of There are 30 students in total in our class. = A total of 30 students are in our class. 3. three billion years several billion years/ billions of years 4. increase by increase to The price has increased by 30%. The population has increased to 6 billion. 5.the earth’s surface the Pacific Ocean 太平洋 the Atlantic Ocean 大西洋 the Indian Ocean 印度洋 the Arctic Ocean 北冰洋 To understand the passage about the earth To get more information about the earth and the continents To learn some words and expressions: in total one third all year round two thirds Antarctica is covered with snow and ice all year round. objectives How many continents are there in the world? What are they? Africa North America South America Asia Europe Australia Antarctica Try to match the seven continents with their correct descriptions. Look at the map and circle the four main oceans. 1. In the year 2010, the world’s population was over _. By 2025, the world may have about _ people. And by 2050, the world’s population may reach _. 2. Only about _ of our planet is land. 3. But parts of this land are very _. These places are called _. 4. Oceans cover _ of the earth’s surface. 5. The world’s largest ocean is _. 6. _ is covered with snow and ice all year round. 7 billion 8 billion one third two thirds the Pacific Ocean Antarctica dry Listen to the passage and fill in the blanks. 9 billion deserts Match each paragraph with its main idea. Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 a. Six of the seven continents are good for people to live on. b. We should treat the earth well. c. An increasing population is a big problem for the earth. d. Two thirds of the earth is covered with oceans. e. People cannot live everywhere on the earth. 11 Read Para. 1 and fill in the blanks. Year the world’s population by 2010 by 2025 by 2050 over 7 billion about 8 billion 9 billion Read Para. 2 and complete the sentences. 1. The problem is that people can’t _ on the earth. 2. Some places are difficult to live in, such as _, _ and areas covered with _. 3. Land only covers _ of our planet and the rest is water. live everywhere deserts snow and ice one third high mountains Read Para. 3 & Para. 4 and do the following exercises. 1. List the seven continents. 2. List the four main oceans. Asia, Europe, Africa, North America, South America, Australia and Antarctica The Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean. Which continent is covered with snow and ice all year round? Antarctica The Pacific Ocean Which ocean is the world’s largest one? Read Para. 5 and complete the sentences. The earth is our home now and it will be our home _, so it _. in the future must be treated well Try to retell the passage with the help of the key words. the earth two thirds — water/ ocean deserts, high mountains, areas covered with snow and ice green forests, rich lands one third — land not easy to live in these places easy to live in the four main oceans a big problem: large population over 7 billion by 2010 about 8 billion by 2025 9 billion by 2050 another problem: limited areas for living in (deserts, high mountains and areas covered with snow and ice) We must treat our home well. Problems our planet faces planet in total increasing one third are called is covered with two thirds surface Indian Atlantic be treated must Please pay attention to the underlined sentences and the words in red. 划线句子均使用了被动语态。 被动语态表示主语是谓语动作的承受者,被动语态由“be + 过去分词”构成。be随着主语人称和数以及时态的不同而变化。含有情态动词的被动语态由“can /must /may /should… + be + 过去分词”构成。 planet in total increasing one third called is covered with two thirds surface Indian Atlantic treated 情态动词may/can表“可能,可能性”。 情态动词must表“必须”。 Please pay attention to the underlined sentences and the circled modal verbs. planet in total increasing one third called is covered with two thirds surface Indian Atlantic treated Do you know the meanings of the underlined words? Why must we take care of the earth? What can we do to take better care of it? Group work Do some practice Translate the following phrases into English. 总计;合计;总共 三分之一 被……覆盖 三分之二 到2050年 增长到 地球表面 in total one third be covered with… two thirds by 2050 increase to the earth’s surface 1. The number of swimmers here is _ quickly because it’s very hot these days. 2. The school has a _ of 900 students. 3. I think it may be the _ season of the year. 4. The _ of our body is skin. It protects us. 5. How many _ of people are there in the world now? increase dry surface billion total surface billions increasing total driest Fill in the blanks with the correct forms of the words in the box. 1.The city’s population is over million _(总计). 2.The population has _ (增加)from 1.2 million to 1.8 million. 3. There is no living things on the _ (表面) of the moon. 4. The _ (India) like to ride the elephants. 5. In recent years, the economy (经济)of our country _ rapidly. A. is increased B. has increased C. increased D. has been increased 6.Where’s the mistake? Can you _(把它指出来)? 7. Most of the windows here _(朝向) south. in total increased surface Indians point it out face 8. Some people love cats, but_ (other) hate them. 9. Two thirds of the teachers in our school _ (be) women teachers. 10. The hills were _ (cover) with snow. 11. By the time I _ (get) to the airport, the plane had already taken off. 12. The dictionary may _ for three weeks. keep B. be kept C. borrow D. be borrowed 13. – It’s one of the _ things in the world to stay with friends.– I agree. It always makes us relaxed. A. worst B. happiest C. busiest D. hardest others are covered got 14. It’s said that _ of the water around the world _ polluted. two third, has B. two thirds, have C. two third, are D. two thirds, is 15. The fire last night destroyed many buildings._, no one was killed. Actually B. Simply C. Luckily D. Immediately 16. My uncle lost his ID card yesterday morning._, a school boy found it and sent it back to him in the afternoon. Loudly B. Clearly C. Nearly D. Luckily 17. Lanzhou is the only capital city that the Yellow River, the second _ river in China, passes through. A. long B. longest C. longer D. the longer Homework 1. Copy the words, phrases and sentences on the exercise book. 2. 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