Module 5 The lesson in a lab 高一外研版必修一 Module 5 The lesson in a lab

1.基数词的读法： A. 先说“几十”， 再说“几”，中间用连字符。如： 23— 89— twenty-three eighty-nine B. 先说“几百”， 再加and,再加末两位数（或末位数）。如： 223— 416— 809— two hundred and twenty-three four hundred and sixteen eight hundred and nine

C. 1000以上的数先从后向前数，每三位数加一“,”（千分位）；第一个“,”号前为thousand; 第二个“,”号前为million; 第三个“,”号前为billion。如： 1,001— 4,000— 9,743— 174,301— 750,000,000— one thousand and one four thousand nine thousand, seven hundred and forty-three a (one) hundred and seventy-four thousand, three hundred and one seven hundred and fifty million

Can you say the following in English correctly? 1,000 2,000 12,000 112,000 796,000 one thousand two thousand twelve thousand one hundred and twelve thousand seven hundred and ninety six thousand

879,457 eight hundred and seventy-nine thousand, four hundred and fifty-seven one million 1,000,000 9,000,000 32,000,000 212,000,000 nine million thirty-two million two hundred and twelve million

988,766,688 nine hundred and eighty-eight million, seven hundred and sixty-six thousand, six hundred and eighty-eight 987,654,321 nine hundred and eighty-seven million, six hundred and fifty-four thousand, three hundred and twenty-one

one billion 1,000,000,000 9,000,000,000 nine billion 32,000,000,000 thirty-two billion five hundred and sixty-four billion, eight hundred and sixty-five million 564,865,000,000

nine hundred and seventy-eight billion, eight hundred,and seventy-six million, six hundred and seventy-five thousand, four hundred and sixty-seven 978,876,675,467

2.序数词的读法 序数词一般以与之相应的基数词加词尾-th构成，如：tenth（第十），但下面这些基数词在变序数词时， 有特别的地方。如： one — two — three — five — eight — nine— twelve— first second third fifth ninth eighth twelfth

基数词表示分子，序数词表示分母，除了分子是“1”的情况外，序数词要用复数。如： 3.分数词fraction的读法 基数词表示分子，序数词表示分母，除了分子是“1”的情况外，序数词要用复数。如： ¼ — 2/3— 7/9 — 5/12— — one-fourth two-thirds seven-ninths five-twelfths 3 2 5 two and three-fifths 7 30 thirty and seven-eighths 8

ninety-seven one hundred and elevenths seven tenths 7/10 97/111 ninety-seven one hundred and elevenths 45/87 forty-five eighty-sevenths 总结: 你能看出他们有什么特点吗？ 分子用基数词,分母用序数词;分子大于1,分母的序数词需要加s。

Practice Now let’s say: 2/5 5/8 9/10 3/8 5/6 two-fifths five-eighths nine-tenths three-eighths five-sixths

一些特殊的表达法 ½— ¼— ¾— a / one half a / one quarter three quarters

4.小数的读法 7.8— seven point eight 0.4— 0.03— zero point four 0.125— 14.397— seven point eight zero point four zero point zero three zero point one two five fourteen point three nine seven

Can you say the following in English correctly? point five point eight point seven six one point two three 0.5 0.8 0.76 1.23

23.45 100.32 87.675 7.564 twenty-three point four five one hundred point three two eighty-seven point six seven five seven point five six four 总结：小数点用 point

(5) 百分数的读法 27% — 45% — 86% — twenty-seven percent forty-five percent eighty-six percent

A 1/3 A. one third B. one thirds C. one three 3/5 A. three fifth B. three fifths C. fifth three 3/4 A. three fourth B. three quarter C. three quarters 7/56 A. seven fifty-sixth B. seven fifty-sixths C. seven fifties-sixth 5.3½ A. three and one halves B. three and halfs C. three and one half 6. 0.5 A. zero point fifth B. zero fifthC. nought point five 7. 1.73 A. one point seven threeB. one point seventy- three C. one seventy-three B C B C C A

8. 23.6 A. twenty-three points six B. twenty-three point six C. twenty-three point sixth 9. 0.3% A. point three percent B. zero point three C. zero point three percents 10 1.4% A. one point four percent B. one point four percents C. one point fourth percent 11. 3/4 mile A. a three-quarter mile B. a three quarter mile C. a three four mile B A A A

12. 25% A. twenty-five percent B. two and five 20. 6:10 A. ten past six B. six past ten 21. 4:30 A. thirty four B. four thirty 22. 7:50 A. ten to eight B. ten to seven 23. 4th May A. the fourth of May B. four May 24. July 12 A. July twelve B. July twelfth 25. Henry VIII A. Henry the Eighth B. Henry Eighth A A B A A B A

Everyday English – 1.Choosing Choose the correct meaning of the sentences on Page 48. a Where do we go from here? Means_______ What shall we do next? Is this the right way? 2. Keep the noise down means____________. Don’t talk (b) talk quietly. 3. You’ve got it! Means____________. You’ve understood (b) you have something b a

b a 4. Go ahead! Means_____________! (a) Go away (b) Begin 5. It’s your turn means__________. (a) you’re next (b) Turn round b a

Everyday English – 2. Conversation(4m) Complete the conversations using everyday English just learnt. 1. -__________________________? - Let’s put this piece of metal in the test tube. Where do we go from here

2. -So you mean the earth is 49 times as big as the moon, don’t you? -Yes, _____________. 3. -____________________. The baby’s sleeping. -OK, I will. 4. –Well, I’ve finished my work. -So _____________ now. you’ve got it Keep the noise down it’s my turn

Function (1) Look at the words in italics. When do we use them? We use them to indicate the stages of a process. (2) Now work with your partner. Talk about the stages of a new experiment, using the words in italics.