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课件网) Lesson 38: The World Is a Big Place Unit 7 Know Our World 单词：planet, total, increase, surface, Indian, billion, Atlantic, Arctic, British 短语：point out, in total, one third, be covered with 句子： (1) These dry places are called deserts. (2) The Pacific Ocean is the largest one. (3) It must be treated well for our children and for our children’s children, too! 学习并积累一些与地球、地理、七大洲、五大洋等相关的词汇和表达；掌握分数的表达方法。 Learning Goals 1 2 Free Talk How many continents are there in the world What are they What do you know about the place where you live Which continent does it belong to What’s the population of your city What’s the weather like What’s the problem that your city faces What’s your advice Presentation How many continents and oceans does the world have Can you point them out The earth is a very special planet, and it faces a big problem. In the year 2010, the world’s population was over 7 billion in total. It is increasing very quickly. By 2025, the world may have about 8 billion people. And by 2050, the world’s population may reach 9 billion. There is another problem. People can’t live everywhere on the earth. We can’t live in water, and only about one third of our planet is land. But parts of this land are very dry. These dry places are called deserts. Some areas have very high mountains. Others have a lot of snow and ice. It is not easy to live in those places. There are seven continents: Asia, Africa, Australia, Antarctica, Europe, North America and South America. Antarctica is covered with snow and ice all year round. Luckily, people can live on the other six continents. On these continents, there are green forests, fresh water and rich lands. Oceans cover two thirds of the earth’s surface. The earth has only one big ocean, but we use these names for its different parts: the Pacific Ocean, the Indian Ocean, the Atlantic Ocean and the Arctic Ocean. The Pacific Ocean is the largest one. The earth is our home now, and it will be our home in the future. It must be treated well for our children and for our children’s children, too! New words planet billion total increase surface Indian 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 Let's do it! 2. Fill in the blanks with the correct forms of the words in the box. 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 increasing total driest surface billions increase dry surface billion total Let's do it! 1. Read the lesson and match each paragraph with its main idea. Paragraph 1 a. Six of the seven continents are good for people to live on. Paragraph 2 b. We should treat the earth well. Paragraph 3 c. An ... ...
