《高中英语 module5 introduction课件 外研必修1.ppt》由会员分享，可在线阅读，更多相关《高中英语 module5 introduction课件 外研必修1.ppt（31页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Module 5 A lesson in a lab2021/8/11 星期三1Introduction2021/8/11 星期三2Introduction-3.Quiz time.(4m)Introduction-3.Quiz time.(4m)Choose the correct answers to Choose the correct answers to the quiz in Part 1.Then listen and check your answers.the quiz in Part 1.Then listen and check your answers.1.Water
2、Water exists asexists as a solid,a liquid and a gas.a solid,a liquid and a gas.2.When you heat a metal,it When you heat a metal,it expandexpands.s.3.Steel is Steel is a mixture ofa mixture of iron and other iron and other substancesubstances.s.4.Two-thirds ofTwo-thirds of the earths surface the eart
3、hs surface is is water.water.5.The The distancedistance of the sun from the earth is of the sun from the earth is 150,500,500 kilometres.150,500,500 kilometres.6.The earth is 4.6 billion years old.The earth is 4.6 billion years old.7.The earth is forty-nineThe earth is forty-nine times larger than t
4、imes larger than the moon.the moon.Answers:Answers:2021/8/11 星期三3Introduction 4.Classification(2m)Introduction 4.Classification(2m)Put the words in Put the words in pairs or groups.pairs or groups.contract air earthcontract air earth gas liquid oxygen gas liquid oxygenmoon solid moon solid expand su
5、nmoon solid moon solid expand sun1 12 23 34 4air gas-oxygenair gas-oxygencontract-expandcontract-expandearth sun-moonearth sun-moongas liquid-solidgas liquid-solid2021/8/11 星期三4Introduction 5.Classification(2m)Introduction 5.Classification(2m)Put words in the Put words in the right place.right place
6、.electricityelectricity iron iron metal metal steel steel air air glassglassnaturalnaturalman-mademan-madebothbothelectricity iron air electricity iron air some metalssome metalssteel glass some metalssteel glass some metalselectricity electricity some metals(alloy for example)some metals(alloy for
7、example)2021/8/11 星期三5 Look at the pictures collected by our classmates.Do you know the name of these equipment？test tube tongs balancecrucible beaker&glass rod Bunsen burner 2021/8/11 星期三6Since you are interested in doing scientific experiments,now lets get to know some vocabulary and knowledge rel
8、ated to science and experiment.Potassium （钾）（钾）2021/8/11 星期三7 Sodium(钠钠)Calcium(钙钙)Magnesium(镁镁)2021/8/11 星期三8Aluminium（铝）（铝）Zinc （锌）（锌）Iron （铁）（铁）Copper （铜）（铜）2021/8/11 星期三9Vocabulary2021/8/11 星期三10英语中基数词、序数词、分数、小数和百分数的读法2021/8/11 星期三111.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
9、.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 sixteeneight hundred and nine2021/8/11 星期三12C.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。
10、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 million2021/8/11 星期三132.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
11、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 twelvefirstsecondthirdfiftheighthninthtwelfth2021/8/11 星期三14fractionWe write1/5 1/61/74/7We sayone fifthone sixthone seventhfour sevenths2021/8/11 星期三157/10 97/111seven tenths ninety-seven one hundred and elevenths 45/8
12、7forty-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？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,分母的序数词需要加分母的序数词需要加s。2021/8/11 星期三16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 3/42/3A half is the same as 50 percent.one half one quarter one third 33.33r%r:recurringthree quarters two thirds 66.66%50%25%75%百分数
13、：百分数：percentage2021/8/11 星期三175)百分数的读法百分数的读法27%45%86%twenty-seven percent forty-five percent eighty-six percent2021/8/11 星期三18Can 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
14、 six thousand2021/8/11 星期三19879,457eight hundred and 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 and twelve million2021/8/11 星期三20988,766,688nine hundred and eighty-eight million,seven hundred and s
15、ixty-six thousand,six hundred and eighty-eight987,654,321nine hundred and eighty-seven million,six hundred and fifty-four thousand,three hundred and twenty-one2021/8/11 星期三211,000,000,000one billion9,000,000,000nine billion32,000,000,000thirty-two billion564,865,000,000five hundred,sixty-four billio
16、n,eight hundred,sixty-five million2021/8/11 星期三22978,876,675,467nine hundred and seventy-eight billion,eight hundred and seventy-six million,six hundred and seventy-five thousand,four hundred and sixty-seven 2021/8/11 星期三23PracticeNow lets say:2/5 5/8 9/10 3/8 5/6two-fifthsfive-eighthsnine-tenths th
17、ree-eighthsfive-sixths2021/8/11 星期三24Can you say the following in English Can you say the following in English correctly?correctly?0.50.80.761.23point fivepoint eight point seven sixone point two three2021/8/11 星期三2523.45100.3287.6757.564twenty-three point four fiveone hundred point three two eighty
18、-seven point six seven five seven point five six four pointpointpointpoint总结：小数点用point2021/8/11 星期三26Read these questions aloud and say the answers.1.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 mi
19、llion2021/8/11 星期三274.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 2021/8/11 星期三28HomeworkFinish Exercise 9 on P 93.2021/8/11 星期三29See you!2021/8/11 星期三302021/8/11 星期三31