(
课件网) Lesson 38 The World Is a Big Place Unit 7 Know Our World 同学们, 上一课学习的单词、短语和句型你们都掌握了吗？现在大家来检验一下, 点击下面的音频开始听写吧！ All of us have studied geography. Can you say the names of the continents and oceans in the world THINK ABOUT IT ·How many continents are there in the world What are they ·What do you know about the place where you live 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. ① In the year 2010, the world’s population was over 7 billion in total. ② It is increasing very quickly. ③ By 2025, the world may have about 8 billion people. And by 2050, the world’s population may reach 9 billion. 温馨提示: 此符号表示“考点精讲点拨”链接。 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. ④ 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. ⑤ 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! ⑥ 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 increasing population is a big problem for the earth. Paragraph 4 d. Two thirds of the earth is covered with oceans. Paragraph 5 e. People cannot live everywhere on the earth. 2) Fill in the blanks with the correct forms of the words in the box. increase dry surface billion total 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 3) Match the seven continents with their correct descriptions. It is the biggest continent. It has the highest point on the earth in the Himalayas. Europe South America Asia Africa Australia Antarctica North America It is the smallest continent. You can find koalas and kangaroos there. It is the sixth largest continen ... ...
