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1、Module 5The lesson in a lab Vocabulary Speaking&Listening 高一外研版必修一高一外研版必修一Vocabulary and Speaking1.1.基数词的读法基数词的读法：A.先说先说“几十几十”，再说再说“几几”，中间用，中间用连字符。如：连字符。如：23 89B.先说先说“几百几百”，再加再加and,再加末两位数再加末两位数（或末位数）。如：（或末位数）。如：223 416 809 twenty-three eighty-ninetwo hundred and twenty-threefour hundred and sixteene
2、ight hundred and nineC.1000以上的数先从后向前数，每三位数加以上的数先从后向前数，每三位数加一一“,”（千分位）；第一个（千分位）；第一个“,”号前为号前为thousand;第二个第二个“,”号前为号前为million;第三个第三个“,”号前为号前为billion。如：如：1,001 4,000 9,743 174,301750,000,000 one thousand and onefour thousandnine thousand,seven hundred and forty-threea(one)hundred and seventy-four thousa
3、nd,three hundred and oneseven hundred and fifty millionCan you say the following in English correctly?1,000 2,000 12,000 112,000796,000one thousandTwo thousandtwelve thousandone hundred and twelve thousandseven hundred and ninety six thousand879,457eight hundred and seventy-nine thousand,four hundre
4、d and fifty-seven 1,000,000 9,000,00032,000,000 212,000,000one million nine millionthirty-two milliontwo hundred and twelve million988,766,688nine hundred and eighty-eight million,seven hundred and sixty-six thousand,six hundred and eighty-eight987,654,321nine hundred and eighty-seven million,six hu
5、ndred and fifty-four thousand,three hundred and twenty-oneone billion1,000,000,0009,000,000,000nine billion32,000,000,000thirty-two billion564,865,000,000five hundred and sixty-four billion,eight hundred and sixty-five million978,876,675,467nine hundred and seventy-eight billion,eight hundred,and se
6、venty-six million,six hundred and seventy-five thousand,four hundred and sixty-seven 2.2.序数词的读法序数词的读法序数词一般以与之相应的基数词加词序数词一般以与之相应的基数词加词尾尾-th构成，如：构成，如：tenth（第十），但下（第十），但下面这些基数词在变序数词时，面这些基数词在变序数词时，有特别有特别的地方。如：的地方。如：A.one two three five eight nine twelvefirstsecondthirdfiftheighthninthtwelfthB.B.以以-ty结尾的
7、词，要先变结尾的词，要先变-y为为-i，再加，再加-eth。如：如：twenty fortyC.C.以以one,two,three,five,nine收尾的多位数词，收尾的多位数词，要照第一条方法变。如：要照第一条方法变。如：twenty-one twenty-two thirty-five ninety-ninea hundred and fifty-three twentiethfortiethtwenty-firsttwenty-secondthirty-fifthninety-nintha hundred and fifty-third基数词表示分子，序数词表示分母，基数词表示分子，序
8、数词表示分母，除了分子是除了分子是“1 1”的情况外，序数词要的情况外，序数词要用复数。如：用复数。如：2/32/3 7/9 7/9 5/125/12 one-fourthtwo-thirdsseven-ninths five-twelfthstwo and three-fifthsthirty and seven-eighths3.3.分数词的读法分数词的读法2353078一些特殊的表达法一些特殊的表达法 a/one halfa/one quarterthree quarters4.小数的读法小数的读法 7.8 7.8 0.4 0.4 0.03 0.03 0.125 0.125 14.397
9、14.397 seven point eight zero point fourzero point zero threezero point one two fivefourteen point three nine sevenfractionWe write1/5 1/61/74/7We sayone fifthone sixthone seventhfour sevenths7/10 97/111seven tenths ninety-seven one hundred and elevenths 45/87forty-five eighty-sevenths总结总结:你能看出他们有什么
10、特点吗？你能看出他们有什么特点吗？分子用基数词分子用基数词,分母用序数词分母用序数词;分子大分子大于于1,1,分母的序数词需要加分母的序数词需要加s s。PracticeNow lets say:2/5 5/8 9/10 3/8 5/6two-fifthsfive-eighthsnine-tenths three-eighthsfive-sixthsCan you say the following in English Can you say the following in English correctly?correctly?0.50.80.761.23point fivepoint
11、eight point seven sixone point two three23.45100.3287.6757.564twenty-three point four fiveone hundred point three two eighty-seven point six seven five seven point five six four 总结：小数点用总结：小数点用 point(5)百分数的读法百分数的读法27%45%86%twenty-seven percent forty-five percent eighty-six percentRead these questions
12、 aloud and say the answers.1.What is of 6,000,000?Three million.2.How much is 35,246,000 plus12,800,000?forty-eight million,forty-six thousand.3.What is 25%of 200,000,000?fifty million.4.How much is 260,408,396 and 5,284,700?two hundred and sixty-five million,six hundred and ninety-three thousand,ni
13、nety-six 5.What is of 1,000,500,000?seven hundred and fifty million,three hundred and seventy-five thousand 6.What is 10%of 800,000,000?eighty million 1.1/3 A.one third B.one thirds C.one three2.3/5 A.three fifth B.three fifths C.fifth three3.3/4 A.three fourth B.three quarter C.three quarters4.7/56
14、 A.seven fifty-sixth B.seven fifty-sixths C.seven fifties-sixth5.3 A.three and one halves B.three and halfs C.three and one half6.0.5 A.zero point fifth B.zero fifthC.nought point five7.1.73 A.one point seven threeB.one point seventy-three C.one seventy-three ABCBCCA8.23.6 A.twenty-three points six
15、B.twenty-three point six C.twenty-three point sixth9.0.3%A.point three percent B.zero point three C.zero point three percents10 1.4%A.one point four percent B.one point four percents C.one point fourth percent11.3/4 mile A.a three-quarter mile B.a three quarter mile C.a three four mile BAAA12.25%A.t
16、wenty-five percent B.two and five percent13.6:10 A.ten past six B.six past ten14.4:30 A.thirty four B.four thirty15.7:50 A.ten to eight B.ten to seven16.4th May A.the fourth of May B.four May17.July 12 A.July twelve B.July twelfth18.Henry VIII A.Henry the Eighth B.Henry EighthAABAABAListening and Vo
17、cabulary 1.Pre-listening You will hear a conversation in which a teacher helps a student do an experiment.Can you predict the result according to the aim?Listen to the conversation,was your prediction correct.Aim:To find out if there is a change in weight when the metal magnesium burns in air.Result
18、:_ Listening and Vocabulary 2.Listening Listen to the conversationListen again and complete the description of the scientific experiment in Part 3.Now check the answers with your partner.Listening and Vocabulary 3.Checking Present what youve finished and then check the answers together.Make a conclu
19、sion of the ways to write experiment report.Aim:Apparatus:to find out if theres a change in weight when magnesium burns in airMagnesium,Bunsen burner,a balance,a crucibleMethod:First,put the magnesium in the crucible.Then put he crucible on the balance and weigh it.Next,heat the magnesium.Light the Bunsen burner and hold the crucible over it.Finally,weigh the magnesium again.Result:It weighs a little more than before.Conclusion:There is a change in weight when magnesium burns in air.