Unit 1 Topic 2 Section B-2023-2024学年九年级英语上册【趣味课堂】精品课件（仁爱科普版）

Unit 1 The Changing World Topic 2 The population in developing countries is growing faster. Section B 单词关 New words: 1. population n. 人口，人数 2. billion num. 十亿 3. increase v. （使）增加，（使）增大 n.增加，增大 4.reach v.实现；够得着；到达 5.luckily adv.幸运地 6. policy n.政策，方针 7. Russia n.俄罗斯 8. measure n.措施，方法 Numbers in our lives one hundred and fifty yuan The Winter Olympic Games in two thousand and twenty-two thousands of people one point seven five (1.75) meters tall 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