Module 5 A Lesson in a Lab introduction
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| 名称 | Module 5 A Lesson in a Lab introduction |  | |
| 格式 | rar | ||
| 文件大小 | 3.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 外研版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2012-12-28 12:15:29 | ||
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课件21张PPT。Module 5
A lesson in a labIntroduction Water exists as a solid, a liquid and a gas.
When you heat a metal, it expands.
Steel is a mixture of iron and other substances.
Two-thirds of the earth’s 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: Introduction – 4.Classification(2m) Put the words in pairs or groups.contract air earth gas liquid oxygen
moon solid moon solid expand sunair – gas - oxygencontract - expandearth – sun - moongas – liquid - solidIntroduction – 5.Classification(2m) Put words in the right place.electricity iron metal
steel air glasselectricity iron air
some metalssteel glass some metalselectricity
some metals (alloy for example)
Look at the pictures collected by our classmates. Do you know the name of these equipment？ test tube Bunsen burner tongs breaker & glass rod balance cruciblePotassium
（钾） Sodium(钠) Calcium(钙) Magnesium(镁)Aluminium
（铝） Zinc
（锌） Iron
（铁） Copper
（铜）Vocabulary英语中基数词、序数词、分数、小数和百分数的读法1.基数词的读法：A. 先说“几十”， 再说“几”，中间用连字符。如：
23— B. 先说“几百”， 再加and,再加末两位数（或末位数）。如：
223—
809— twenty-three two hundred and twenty-threeeight hundred and nineC. 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—
9,743—
174,301—
750,000,000— one thousand and onenine thousand, seven hundred and forty-threea (one) hundred and seventy-four thousand, three hundred and oneseven hundred and fifty million2.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：A. one — two —
three— five—
eight — nine—
twelve— ninety-- firstsecondthirdfiftheighthninthtwelfthninetiethfraction分数
We write
1/5
4/7We say
one fifth
four sevenths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。
另外, 还有几个特殊表达的情况:
1/2
1/4
1/3
3/4
A half is the same as 50 percent.one half
one quarter
one third
three quarters
50%
25%75% 百分数： percentage
5) 百分数的读法
27% —
45% —
86% —twenty-seven percent forty-five percent eighty-six percentAbout twenty-seven percent of the students are illForty-five percent of the water is polluted.879,457
eight hundred and seventy-nine thousand, four hundred and fifty-seven
32,000,000
212,000,000thirty-two million
two hundred and twelve millionCan you say these in English987,654,321
nine hundred and eighty-seven million, six hundred and fifty-four thousand, three hundred and twenty-one
Can you say the following in English correctly?0.5
0.76
1.23
87.675point five
point seven six
one point two three
eighty-seven point six seven fiveRead 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 million
A lesson in a labIntroduction Water exists as a solid, a liquid and a gas.
When you heat a metal, it expands.
Steel is a mixture of iron and other substances.
Two-thirds of the earth’s 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: Introduction – 4.Classification(2m) Put the words in pairs or groups.contract air earth gas liquid oxygen
moon solid moon solid expand sunair – gas - oxygencontract - expandearth – sun - moongas – liquid - solidIntroduction – 5.Classification(2m) Put words in the right place.electricity iron metal
steel air glasselectricity iron air
some metalssteel glass some metalselectricity
some metals (alloy for example)
Look at the pictures collected by our classmates. Do you know the name of these equipment？ test tube Bunsen burner tongs breaker & glass rod balance cruciblePotassium
（钾） Sodium(钠) Calcium(钙) Magnesium(镁)Aluminium
（铝） Zinc
（锌） Iron
（铁） Copper
（铜）Vocabulary英语中基数词、序数词、分数、小数和百分数的读法1.基数词的读法：A. 先说“几十”， 再说“几”，中间用连字符。如：
23— B. 先说“几百”， 再加and,再加末两位数（或末位数）。如：
223—
809— twenty-three two hundred and twenty-threeeight hundred and nineC. 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—
9,743—
174,301—
750,000,000— one thousand and onenine thousand, seven hundred and forty-threea (one) hundred and seventy-four thousand, three hundred and oneseven hundred and fifty million2.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：A. one — two —
three— five—
eight — nine—
twelve— ninety-- firstsecondthirdfiftheighthninthtwelfthninetiethfraction分数
We write
1/5
4/7We say
one fifth
four sevenths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。
另外, 还有几个特殊表达的情况:
1/2
1/4
1/3
3/4
A half is the same as 50 percent.one half
one quarter
one third
three quarters
50%
25%75% 百分数： percentage
5) 百分数的读法
27% —
45% —
86% —twenty-seven percent forty-five percent eighty-six percentAbout twenty-seven percent of the students are illForty-five percent of the water is polluted.879,457
eight hundred and seventy-nine thousand, four hundred and fifty-seven
32,000,000
212,000,000thirty-two million
two hundred and twelve millionCan you say these in English987,654,321
nine hundred and eighty-seven million, six hundred and fifty-four thousand, three hundred and twenty-one
Can you say the following in English correctly?0.5
0.76
1.23
87.675point five
point seven six
one point two three
eighty-seven point six seven fiveRead 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 million