(
课件网) Section B Unit 1 The Changing World Topic 2 The population in developing countries is growing faster. numbers in our lives one hundred and fifty yuan thousands of people two point two six (2.26) meters tall two thousand and eight Olympic Games 1,000,000,000 one billion 1,000,000 one million 1,000 one thousand 3.14 three point one four 100 one hundred Look,read and learn First, try to separate the number in groups of three from right to left. Then read it in order from billion to million and thousand. How to read numbers 1 , 0 0 0 , 0 0 0 , 0 0 0 billion million thousand 1 0 0 0 0 0 0 0 0 0 2 Listen and read the numbers, paying special attention to the intonation. Then read the other numbers with your partner. 1 , 0 0 0 , 0 0 0 , 0 0 0 billion million thousand 543.7 five hundred and forty-three point seven 1 562 one thousand, five hundred and sixty-two 6 004 001 six million, four thousand and one 7 198 764 502 seven billion, one hundred and ninety-eight million, seven hundred and sixty-four thousand, five hundred and two 973 nine hundred and seventy-three 3 980 three thousand , nine hundred and eighty 98 721 ninety-eight thousand , seven hundred and twenty-one 768 540 seven hundred and sixty-eight thousand , five hundred and forty 1 , 0 0 0 , 0 0 0 , 0 0 0 billion million thousand 2 346 780 two million, three hundred and forty-six thousand, seven hundred and eighty 82 346 580 eighty-two million, three hundred and forty-six thousand, five hundred and eighty 405 000 000 four hundred and five million 5 555 555 555 five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five 1 , 0 0 0 , 0 0 0 , 0 0 0 billon million thousand 6800 80 80 80 The population is increasing by 82 million every year. = The world has a population of 7.2 billion. What a large population! 1b Listen to 1a and match the information. 1. the world 2. China 3. India 4. the USA A. 323 million B.7.2 billion C. 1.36 billion D. 1.27 billion Make similar conversations after the example. Example: A.: What’s the population of the world B: It’s about 7.2 billion. 1. the world 2. China 3. India 4. the USA A. 323 million B. 7.2 billion C. 1.36 billion D. 1.27 billion 1c Read 1a and fill in the blanks. The world has a population of 7.2 billion in 2014 and it is increasing by _____ every year. China’s population has already reached _____ and India has _____ of 1.27 billion. As the population _____, there will be more pollution and other serious problems. We should find new ways to _____ the environment for example, making new rules and policies. 82 million China 1.36 billion second larger faster solve 1a Listen，look and say. 11-1a音频 The supermarket is very crowded. So it is. So +主语+ be/情态动词/助动词 Lucy dances very well. She has cleaned the room. So she does. So she has. So it is. Language points 确实如此。 A：What a large population ! The world … 7.2 billion. … 82 ... ...
