高中英語 module5 introduction課件 外研必修1

1、2021/8/11 星期三1Module 5 A lesson in a lab2021/8/11 星期三2Introduction2021/8/11 星期三3Introduction - 3.Quiz time.(4m) Choose the correct answers to the quiz in Part 1. Then listen and check your answers. Water exists as a solid, a liquid and a gas.When you heat a metal, it expands.Steel is a mixture of ir

2、on and other substances.Two-thirds of the earths surface is water.The distance of the sun from the earth is 150,500,500 kilometres. The earth is 4.6 billion years old.The earth is forty-nine times larger than the moon.Answers: 2021/8/11 星期三4Introduction 4.Classification(2m) Put the words in pairs or

3、 groups.contract air earth gas liquid oxygenmoon solid moon solid expand sun1234air gas - oxygencontract - expandearth sun - moongas liquid - solid2021/8/11 星期三5Introduction 5.Classification(2m) Put words in the right place.electricity iron metal steel air glassnaturalman-madebothelectricity iron ai

4、r some metalssteel glass some metalselectricity some metals (alloy for example)2021/8/11 星期三6 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 星期三7Since you are interested in doing sci

5、entific experiments, now lets get to know some vocabulary and knowledge related to science and experiment.Potassium （鉀）2021/8/11 星期三8 Sodium(鈉) Calcium(鈣) Magnesium(鎂)2021/8/11 星期三9Aluminium（鋁） Zinc （鋅） Iron （鐵） Copper （銅）2021/8/11 星期三10Vocabulary2021/8/11 星期三11英語中基數(shù)詞、序數(shù)詞、分?jǐn)?shù)、小數(shù)和百分?jǐn)?shù)的讀法2021/8/11 星期三12

6、1.基數(shù)詞的讀法：A. 先說“幾十”， 再說“幾”，中間用連字符。如：23 89B. 先說“幾百”， 再加and,再加末兩位數(shù)（或末位數(shù)）。如：223 416 809 twenty-three eighty-ninetwo hundred and twenty-threefour hundred and sixteeneight hundred and nine2021/8/11 星期三13C. 1000以上的數(shù)先從后向前數(shù)，每三位數(shù)加一“,”（千分位）；第一個(gè)“,”號(hào)前為thousand; 第二個(gè)“,”號(hào)前為million; 第三個(gè)“,”號(hào)前為billion。如：1,001 4,000 9,

7、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 星期三142.序數(shù)詞的讀法序數(shù)詞一般以與之相應(yīng)的基數(shù)詞加詞尾-th構(gòu)成，如：tenth（第十），但下面這些基數(shù)詞在變序數(shù)詞時(shí)， 有特別的地方。如：A. one two three five

8、eight nine twelvefirstsecondthirdfiftheighthninthtwelfth2021/8/11 星期三15fractionWe write1/5 1/61/74/7We sayone fifthone sixthone seventhfour sevenths2021/8/11 星期三167/10 97/111seven tenths ninety-seven one hundred and elevenths 45/87forty-five eighty-sevenths總結(jié): 你能看出他們有什么特點(diǎn)嗎？分子用基數(shù)詞,分母用序數(shù)詞;分子大于1,分母的序數(shù)詞

9、需要加s。2021/8/11 星期三17另外, 還有幾個(gè)特殊表達(dá)的情況: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?jǐn)?shù)： percentage2021/8/11 星期三185) 百分?jǐn)?shù)的讀法27% 45% 86% twenty-seven percent forty-five percent eighty-six percent2021/8/11 星期

10、三19Can 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 thousand2021/8/11 星期三20879,457eight hundred and seventy-nine thousand, four hundred and fifty-seven 1,000,000 9,000,00

11、032,000,000 212,000,000one million nine millionthirty-two milliontwo hundred and twelve million2021/8/11 星期三21988,766,688nine hundred and eighty-eight million, seven hundred and sixty-six thousand, six hundred and eighty-eight987,654,321nine hundred and eighty-seven million, six hundred and fifty-fo

12、ur thousand, three hundred and twenty-one2021/8/11 星期三221,000,000,000one billion9,000,000,000nine billion32,000,000,000thirty-two billion564,865,000,000five hundred, sixty-four billion, eight hundred, sixty-five million2021/8/11 星期三23978,876,675,467nine hundred and seventy-eight billion, eight hundr

13、ed and seventy-six million, six hundred and seventy-five thousand, four hundred and sixty-seven 2021/8/11 星期三24PracticeNow lets say: 2/5 5/8 9/10 3/8 5/6two-fifthsfive-eighthsnine-tenthsthree-eighthsfive-sixths2021/8/11 星期三25Can you say the following in English correctly?0.50.80.761.23point fivepoin

14、t eight point seven sixone point two three2021/8/11 星期三2623.45100.3287.6757.564twenty-three point four fiveone hundred point three two eighty-seven point six seven five seven point five six four pointpointpointpoint總結(jié)：小數(shù)點(diǎn)用point2021/8/11 星期三27Read 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 million2021/8/11 星期三284. How much is 260,408,396 and 5,284,700? two hundred, sixty-five million, six hundred, ninety-three thousand, ninet