Unit 7 Lesson 38 The World Is a Big Place 课件 2024-2025学年冀教版八年级英语下册

New Words planet billion total increase surface Indian Atlantic Arctic [ pl n t] n. 行星 [ b l n] n. 十亿;千兆 [ t tl] n. 总计;总数 adj.总的;总计的 [ n kri s ] v. 增加;增大 [ s f s] n. 表面;表层 [ ndi n] n. 印度人 adj.印度的 [ t l nt k] n. & adj.大西洋(的) [ kt k] adj.北极的 百:hundred 千:thousand 百万:million India n.印度 The earth is a special planet. Land only covers about one third of its surface. But billions of people live on it. There is an Indian wearing traditional Indian clothes. The number of the old increases year by year. It is said that world's total population will grow from 6.1 billion in 2000 to 11 billion in 2100. She wanted to fly solo across the Atlantic. Whales are still being hunted and killed in the Arctic. Lead-in How many continents and oceans in the world? 1 2 3 4 2 1 4 3 5 6 7 Lesson 38 The World Is a Big Place 1.Listen to the Text. (指读) and finish Let's Do It 1 2. Listen to the teacher and take notes. 3. Read the text aloud. 4. Finish Let's Do It 2 &3 and check the answers . Thinking Thinking Thinking 1. The earth faces _ problems in the passage. two/2 2. What are the problems? The population is increasing very quickly. People can’t live everywhere on the earth. 3. What is the world’s population by 2025? About 8 billion. 4. Is it easy to live in a place with a lot of snow and ice? No, it isn’t. Read paragraph 1-2 and answer the question. 1. Snow and ice cover _ all year round. Antarctica 2. There are green forests, fresh water and rich lands on all continents. (T or F) √ 3. There is only one big ocean on the earth and it includes four different parts . (T or F) √ 4. How much of the earth’s surface is covered with oceans? Two thirds. 5. Which is the largest part of the big ocean? The Pacific Ocean. Read paragraph 3-4 and answer the questions. Discussion & Show Time Let's Do It 3 Show Time 行星_ 十亿_ 增加_ 表面_ 印度的_ be covered with_ in total_ one third_ two thirds_ Some areas have very high mountains. Others have a lot of snow and ice. _ In the year 2010, the world's population was over 7 billion in total. _ planet billion increase surface Indian 被...覆盖 总计;合计 三分之一 三分之二 一些地区有很高的山脉。其他地区有大量的冰雪。 在2010年,世界人口的总数超过了70亿。 Explanation 1.total 辨析 I earned a total of $ 5 today. It took 14 years in total to build the Sydney Opera House. What was the total number of people at the meeting? The party was a total disaster. Mary's phone is totally different from this one. total n. 总数;合计 in total 总共;总计 total adj. 总的;全部的 total adj. 完全的;彻底的 totally adv. 完全地 She was depressed (沮丧的) and felt _hopeless about the future. (total) totally Explanation It is increasing very quickly. With the increase in population and the development of industry, litter is everywhere. The population of this city has increased by 5 percent. (翻译) Our coal output has increased to 6 million tons this year.(翻译) 2.increase 用法 这个城市的人口增长了5%。 我们今年的煤产量增加到了六百万吨。 increase / n kri s/ v. 增加; 增大 反义词: decrease increase n. 增加; 增多 face v. 面对 face v. 面向;朝向 Mr. Li turned around and faced me. We should be brave when we face difficulties. Linda has a beautiful face. How many faces does the box have? face n. 面; 表面 face n. 面孔; 脸庞 Explanation 3. face一词多义 We can’t live in water, and only about one third of our planet is land. Explanation 4.分数表达法 分子基, 分母序, 分子大于一, 序数加S 基本表达法: Two thirds of the children are jumping rope. About four fifths of the juice was drunk. 1/6 2/3 特殊表达法: one sixth two thirds 1/2 one half 3/4 three quarters one third 三分之一 谓语动词与名词保持一致 Explanation Three-fourths of the surface of the earth_(be) covered by water. More than three fourths of the population _ Chinese in Singapore. (be) is are Explanation In the year 2010, the world’s population was over 7 billion in total. 与billion 用法类似的词有hundred,thousand,million。 5.billion 用法 There are billions of stars in the sky. What else? billion / b l n/ n. 十亿; 千兆 中考在线: We all know that _(million) of birds fly to Dongting Lake in winter. millions Self-check 1 5.billion 辨析 1.total 辨析 2.increase 用法 4.分数表达法 3. face的一词多义 Self-check 2 1.—Susan, how many women teachers are there in your school? —In our school, _ (3/4)of the teachers _(be) women teachers. 2.Developing good reading habits can _(增加) our reading speed. 3. She was with her husband for eight years _total. 4. The talk show (脱口秀) is so interesting and educational that _(million)of people like to watch it. three fourths are increase millions in $$