高中英语 Module 5 A Lesson in a Lab Module 5 A Lesson in a Lab Introduction and Grammar 1课件 外研必修1

1、英科学家研制苍蝇机器人 Introduction -1.Brainstorming(2m)EinsteinLook at the pictures collected by our classmates. Do you know the name of these equipment？test tube tongs balancecrucible beaker & glass rod Bunsen burner Since you are interested in doing scientific experiments, now lets get to know some voca

2、bulary and knowledge related to science and experiment.Potassium （钾）（钾）What can it be used for?How about the following metals? Sodium(钠钠) Calcium(钙钙) Magnesium(镁镁)Lets get to know more!Lets go on getting to know more metalsAluninium（铝）（铝） Zinc （锌）（锌） Iron （铁）（铁） Copper （铜）（铜）1.基数词的读法：基数词的读法：A. 先说先说“

3、几十几十”， 再说再说“几几”，中间，中间用连字符。如：用连字符。如：23 89B. 先说先说“几百几百”， 再加再加and,再加末两位再加末两位数（或末位数）。如：数（或末位数）。如：223 416 809 twenty-three eighty-ninetwo hundred and twenty-threefour hundred and sixteeneight 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m

4、illion; 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 thousand, three hundred and oneseven hundred and fifty millionCan you say the following in English correctly?1,000 2,

5、000 12,000 112,000796,000one thousandtwo thousandtwelve thousandone hundred,twelve thousandseven hundred, ninety six thousand879,457eight hundred, seventy-nine thousand, four hundred and fifty-seven 1,000,000 9,000,00032,000,000 212,000,000one million nine millionthirty-two milliontwo hundred, twelv

6、e million988,766,688nine hundred, eighty-eight million, seven hundred, sixty-six thousand, six hundred and eighty-eight987,654,321nine hundred, eighty-seven million, six hundred, fifty-four thousand, three hundred and twenty-one1,000,000,000one billion9,000,000,000nine billion32,000,000,000thirty-tw

7、o billion564,865,000,000five hundred, sixty-four billion, eight hundred, sixty-five million978,876,675,467nine hundred, seventy-eight billion, eight hundred, seventy-six million, six hundred, seventy-five thousand, four hundred and sixty-seven 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：

8、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. 以以-ty结尾的词，要先变结尾的词，要先变-y为为-i，再加，再加-eth。如：如：twenty fortyC. 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 thir

9、ty-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，序数词表示分母，除了分子是除了分子是“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： 2/3 7/9 5/12 one-fourthtwo-thirdsseven-ninthsfive-twelfthstwo and three-fifthsthirty and

10、 seven-eighths3.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 0.4 0.03 0.125 14.397 seven point eightzero point fourzero point zero threezero point one two fivefourteen point three nine seven5) 百分数的读法百分数的读法27% 45% 86% twenty-seven percent forty-five per

11、cent eighty-six percentRead these questions aloud and say the answers. What is of 6,000,000?2. How much is 35,246,000 plus 12,800,000?3. What is 25% of 200,000,000?three millionforty-eight million, forty-six thousand fifty million4. How much is 260,408,396 and 5,284,700? two hundred, sixty-five mill

12、ion, six hundred, ninety-three thousand, ninety-six 5. What is of 1,000,500,000? seven hundred, fifty million, three hundred, seventy-five thousand 6. What is 10% of 800,000,000? eighty million 1/5 1/61/74/7one fifthone sixthone seventhfour seventhsCan you say the following in English correctly?7/10

13、 97/111seven tenths ninety-seven one hundred and elevenths forty-five eighty-sevenths总结总结: 你能看出他们有什么特点吗？你能看出他们有什么特点吗？45/87分子用基数词分子用基数词,分母用序数词分母用序数词;分子大于分子大于1,分母的序数词需要加分母的序数词需要加s。另外另外, 还有几个特殊表达的情况还有几个特殊表达的情况:1/21/4 1/3 3/42/3one half one quarter one third three quarters two thirds Now lets say: 2/5 5

14、/8 9/10 3/8 5/6Practicetwo-fifths five-eighthsnine-tenthsthree-eighths five-sixthsCan you say the following in English correctly?0.50.80.761.23point fivepoint eight point seven sixone point two three23.45100.3287.6757.564twenty-three point four fiveone hundred point three two eighty-seven point six

15、seven seven point five six four 总结：小数点用pointFill in the blanks with numbersFill in the blanks with numbers1.W:Why are you so excited? M:Im going to buy a television set.They usually cost _ dollars , but today they are on sale for _ the price300tow-thirds2.W:Did you know Korea has a population of_? M

16、:Thats nothing special.India has nine times as many people as Korea100million3.M:Thats_dollars on the meter(记程器）, and a dollar for the suitcase W:Okay.Here is _ dollars, keep the change.five3.254.M:Our rent is now just 600dollars a month. W:I know. Its exactly _ more than it was when we first moved

17、in.one-third5.W:Is this the bookcase you advertised? M:Yes.Its our regular _ dollars bookcase on sale today for _ dollars.These are the last two.If you use them both you can have the pain for 15dollars.14.959.906.W:Can you tell me why you charged me 6.60dollars on a _dollars bag ? Did you make a mis

18、take? M:No,Madam.Thats_sales tax. Maybe you are from out of town and dont know about it.6.0010%Read these questions aloud and say the answers. What is of 6,000,000?2. How much is 35,246,000 plus 12,800,000?3. What is 25% of 200,000,000?three millionforty-eight million, forty-six thousand fifty milli

19、on4. How much is 260,408,396 and 5,284,700? two hundred, sixty-five million, six hundred, ninety-three thousand, ninety-six 5. What is of 1,000,500,000? seven hundred, fifty million, three hundred, seventy-five thousand 6. What is 10% of 800,000,000? eighty million Finish Exercise 9 on P 93.Homework

20、 Winter in HarbinWinter in Beijing-20-5Mount Tai Mount Qumolangma1521m8848mDiameter (直径）Earth=1 Jupiter=11Winter in HarbinWinter in Beijing-20-5Grammar1 5.Practice(6m) Complete the sentences according to the chart.Diameter直径 Earth=1 Jupiter=11Grammar 1 2.Questions(4m)1. What is wrong with the senten

21、ce? I went there two times.l If object A is 10 metres long, and object B is twice as long as object A, how long is object B?l If object A weighs 100 kilogrammes and object B is four times heavier, how heavy is object B?Grammar 1 3.Rules(6m) First study the sentences and make a conclusion of the comparative structure of adjectives. The brown houses windows are twice as wide as those of the white house. My handwriting is not