(
课件网) Unit 7 What’s the highest mountain in the world Section A 1a-2c 你知道在英语中，大数字怎么读吗？ 1. 从右到左, 三位数为一组，中间用空格（或者逗号）隔开 153 406 799 23,446,120 2. 从右到左，每一组数字后分别读 thousand, million, billion 9,600,000 1,400,000,000 3. 每组数字的百位和十位之间加 and 6,671 39,830 nine million six hundred thousand one billion four hundred million six thousand six hundred and seventy-one thirty-nine thousand eight hundred and thirty 4. 若十位为零，直接在百位和个位之间加 and； 若百位和十位都是零直接在千位和个位之间加 and. 504 6,400,001 5. 小数点读做 point，小数点后面依次按数字读出 5.45 25.18 你知道在英语中，大数字怎么读吗？ five hundred and four six million four hundred thousand and one five point four five twenty-five point one eight Can you read the numbers 10 25 100 175 1,000 1,342 1,000,000 2,300,000 3.54 ten twenty-five one hundred one hundred and seventy–five one thousand one thousand, three hundred and forty-two one million two million, three hundred thousand three point five four 读时，将每三位数看做一个单位，自右向左依次为thousand千，million百万，billion十亿。 每个单位按百、十、个位向右读。 其中百位到十位之间要加入 and。 小窍门 自右向左三逗分； 一逗千(thousand) 二逗百万(million) 三逗十亿(billion) 左右三位分开读； 百位十位and连。 Here are some tips for you. Let’s learn Have a try 86，510 eighty-six thousand five hundred and ten 2，019 two thousand and nineteen 百位数没有，不读 7，725，385 seven million seven hundred and twenty-five thousand three hundred and eighty-five Have a try 9，600，000 nine million six hundred thousand 84 . 14 eighty-four point one four 小数点用point表示 What’s the highest mountain in the world How high is it Qomolangma Qomolangma is the highest mountain in the world. It is 8,844.43 meters high. lead in eight thousand eight hundred and forty-four point four three What do you know about the following numbers 1,025 meters deep The Caspian Sea one thousand and twenty-five What do you know about the following numbers 6,671 kilometers long The Nile six thousand six hundred and seventy-one What do you know about the following numbers 9,600,000 square kilometers in size The Sahara nine million six hundred thousand 0 1a Match the facts you know. Qomolangma about 9,600,000 square kilometers in size The Sahara 1,025 meters deep The Caspian Sea 6,671 kilometers long The Nile 8,844.43 meters high 基数词 + 单位词s + 形容词(long, wide, high, deep等) 长、宽、高、深、面积的表达方法 Match the facts you know. Pre-listening 1a Qomolangma the Nile the Caspian Sea the Sahara about 9,600,000 square kilometers in size 1,025 meters deep 6,671 kilometers long 8,848.86 meters high =in depth =in length =in height 长、宽、高、深、面积的表达结构： 数字 + 单位词 + adj.（deep,long, high...） = 数字 + 单位词 + in + n.（depth,length, height,size...） 【拓展延伸】 作定语时用合成词“数词 - 单位词单数 – 形容词”。 This 20-meter-long rope isn’t long enough to he ... ...
