课件40张PPT。Unit 4How Life Began on the Earthlifeis beginning…We were born…We are growing up…Para1. When did the “Big Bang” happen?
It happened several billion years ago.Scanning Read the passage paragraph by paragraph and answer the questions.Para2-1. What form was the earth after the “Big Bang”?
The earth was still just a cloud of dust.
Para2-2. What made up the earth’s atmosphere after the earth exploded?
Carbon, nitrogen, water vapour and other gases. Para2-3. How did water come into being on the earth?
As the earth cooled down after it exploded, water came into being.Para3. What’s the significance of the presence of water on the earth?
It allowed the earth to dissolve harmful gases and acids into the oceans and seas.Para4-1. What was important to the development of fish?
oxygen.
Para4-2. What made possible the rise of
mammals on the earth?
The disappearance of dinosaurs made the possible the rise of mammals on the earth.Para4-3. Why are mammals different from all life forms in the past?
They gave birth to young baby animals and produced milk to feed them.Can you put the order of development of life into a time line?1. Insects and amphibians appeared.
3. The earth became a solid ball.
5. Reptiles appeared.
7. The earth was a cloud of dust
9. Shellfish and other fish appeared.
11. Clever animals with hands and feet appeared2. Dinosaurs appeared.
4.Small plants grew on the water.
6. Plants began to grow on dry land.
8. Water appeared on the earth
10. The universe began with a “Big Band”.
12. Mammals appeared.831091151741262Ex.2 on P27
Para. 1 The formation (形成) of the
earth.
Para. 2 The importance of water for
life.
Para. 3 A widely accepted theory
about the formation of the
universe.
Para. 4 The arrival of humans and
their impact on the earth.
Para. 5 The development of plants
and animals on the earth. Fast reading (match each paragraph with the main idea correctly) Detailed reading
This text can mainly divided into two stages
Stage 1 : The development of the earth
Stage 2 : The development of life
(para 1—2)(para 3—5)The Big Bang Stage 1: The development of the earth(1) After the Big Bang, what was the earth like? a cloud of dust a solid globe exploded with fire and rock produced water
vapour and gases(2) What happened next?(3) What did the water vapour and gases
form?the earth’s atmosphere Water appeared(4) What appeared as the earth cooled down?water is important for the beginning of life on the earth. Big BangA solid ballAtmosphere The earthStage2 The development of life small plants appears in water 1.What life developed after water appeared?Shellfish and all sorts of fish 2.What life developed in water next? green plants began to grow on land insects appeared3.What about the life on land?amphibians on land and in the waterforests4. What life developed next on land? reptiles appeared dinosaur developed 5.What life developed after forests
appeared?mammals on land6.What life developed after dinosaurs? small clever animals7. What life developed after mammals?It was full of water.Original cells.The cells in the water began to separate.waterPlants in the waterShellfish and fishPlants on landInsects and amphibiansReptiles Dinosaurs Mammals Fill in the blanks in the following form.AtomsviolentatmospherepresenceacidsoxygenshellfishamphibiansReptilesexistedgave birth tocleverdioxidesummaryAfter the “big bang”, the earth was still just a cloud of _______,it _______loudly with fire and rock, which were _____ to produce the_________, water vapour and other gases. Then ________ began to appeared on the earth. dustexplodedin timecarbonwater ____________ in water are considered to be the earliest lives on the earth. The O2 they supplied encouraged the lives of____ __________. Slowly green plants grew on land, which were followed by __________ like insects & ________. When the plants grew into______, ______ appeared. Then _______ developed but disappeared later, which made the rise of a totally different animal,______, possible, and finally _____ spread all over the world.shell--fish and fishamphibiansforestsreptilesdinosaursmammalhumansThe small plantsland animalsHomework Read the passage
after class课件30张PPT。Unit 4Using languagea visit to the moonReading 2spacewalk★Look at the pictures! ★ 视频链接Write down the three ways in which gravity
changed for Li Yanping.Reading I----scanning& skimming (2m)Fast reading1. Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping.
2. Read the passage carefully and then describe how his weight changed.
3. It became very light.The gravity became very strong.2. The gravity disappeared. His weights changed three times too.
Now write them down.He became very heavy.He had no weight and could float around like a feather. He was about one-sixth of his weight on the earth.Careful reading 1. It will be not be as strong a pull as the earth’s.
翻译本句______________________________________。
在as…as…结构中第一个as是________词性，因此后
面可以跟______、________词；第二个as 是______________词性。
2. When I tried to step forward, I found I was carried twice as far as on the earth and fell over.
翻译本句_______________________________________
______________________________________________。
通过本句总结倍数的表达方式：____________________ 1. It will be not be as strong a pull as the earth’s.
翻译本句：月球的引力不像地球的引力那么大。
在as…as…结构中第一个as是副词，因此后面可以跟形容词，副词；第二个as 是连词。
2. When I tried to step forward, I found I was carried twice as far as on the earth and fell over.
翻译本句：当我试着向前迈步时，我发觉我被送出去很远，步子的跨度竟是地球上的两倍，因而，我摔倒了。
通过本句总结倍数的表达方式：A is +倍数+as +adj./adv.+ as +B1). “A + be + 倍数 + as +形容词原级 + as +
B”.
This tree is three times as tall as that one.
His father is twice as old as he.
2). “A + be + 倍数 +形容词比较级 + than +
B ” 倍数其它表达方式： The Yangtze River is almost twice longer than the Pearl River.
长江差不多比珠江长两倍。
The number of students in our school is three times larger than that in theirs.
?? 我们学校的学生数量比他们学校的多三倍。 3). “A + be + 倍数 + the +名词 (size, length, amount) + of + B”
The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 — Do you regret _______(pay) 100 dollars for the painting?
— No, I would gladly have paid __________ (两倍那么多了)for it.
( paying; twice as much) 1. ... “walking does need a bit of practice now that gravity has changed.”
......既然引力改变了，走路也的确需要练一练了。 now that同since相似，语气较弱，强调人们已知的事实。Translation:
1. 既然你忙, 就让我给你做吧。
Now that you are busy, let me do it for you.
2. 既然人都齐了, 咱们开始干吧。
Now that everyone is here let’s start work． 2. We watched, amazed as fire broke out on the outside of the spaceship as the earth’s gravity increased.
break out
它与happen, take place, come out等词的用法一样，是不及物动词，不能带宾语，不能用于被动语态。 1) 战争爆发
The American Civil War broke out in 1861.
美国内战爆发于1861年。
2) 发生争吵
A quarrel broke out between them.
他们之间发生了争吵。3) (火灾)发生
A?fire?broke?out?in?his?house?last?
night.?
昨晚他家里失火了。
与break相关的短语:
break down
打破; 毁掉; 破除; 坍塌; 坏掉
break in
破门而入; 打断7. cheer up; cheer sb. up
感到高兴振奋
8. masses of 许多，大量
9. get the hang of 熟悉,掌握,理解
10. exhausting (sth); exhausted (sb)1). “A + be + 倍数 + as +形容词原级 + as +
B”.
This tree is three times as tall as that one.
His father is twice as old as he.
2). “A + be + 倍数 +形容词比较级 + than +
B ” 3. But when I tried to step forward I found I was carried twice as far as on the earth and fell over. The Yangtze River is almost twice longer than the Pearl River.
长江差不多比珠江长两倍。
The number of students in our school is three times larger than that in theirs.
?? 我们学校的学生数量比他们学校的多三倍。 3). “A + be + 倍数 + the +名词 (size, length, amount) + of + B”
The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 — Do you regret _______(pay) 100 dollars for the painting?
— No, I would gladly have paid __________ (两倍那么多了)for it.
( paying; twice as much) 4.get the hang of sth.查看某物运作了解…..的意义我一直想知道这部新的打字机的用法.I’ve been trying to ______________ this new typewriter.我不十分了解你的论据的意义.I don’t quite __________________ your argument.get the hang ofget the hang ofWe watched amazed as fire broke out
on the outside of the spaceship
as the earth’s gravity increased.5.amazed 是过去分词，此处做状语用 他进来的时候没有人注意到.
He came in _________ .6.break out (战争,争吵,疾病等)爆发在深夜,突然有人吵架.
_________________ suddenly at midnight.A quarrel broke outunnoticed课件15张PPT。To the speaker:
Confidence;
Fluency;
Accuracy!To the audience:
Attention; InteractionEnglish speechFast reading1. Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping.
2. Read the passage carefully and then describe how his weight changed.
Fast reading
1. Read the passage carefully and then describe the three ways in which gravity changed for Li Yanping.
Fast reading2. Read the passage carefully and then describe and how his weight changed.
Careful reading 1. It will be not be as strong a pull as the earth’s.
翻译本句______________________________________。
在as…as…结构中第一个as是________词性，因此后
面可以跟______、________词；第二个as 是______________词性。
2. When I tried to step forward, I found I was carried twice as far as on the earth and fell over.
翻译本句_______________________________________
______________________________________________。
通过本句总结倍数的表达方式：____________________ 1. It will be not be as strong a pull as the earth’s.
翻译本句：月球的引力不像地球的引力那么大。
在as…as…结构中第一个as是副词，因此后面可以跟形容词，副词；第二个as 是连词。
2. When I tried to step forward, I found I was carried twice as far as on the earth and fell over.
翻译本句：当我试着向前迈步时，我发觉我被送出去很远，步子的跨度竟是地球上的两倍，因而，我摔倒了。
通过本句总结倍数的表达方式：A is +倍数+as +adj./adv.+ as +BCareful reading Writing If you were given the chance to travel to the moon, what problems do you think you would face. List one of the problems and think of a solution to solve it. Then write it into a passage.
Requirements:
1. First list the problem you might have on the moon.
2. List the possible solutions.
3. How the solutions help solve the problem.
4. The writing must be written about 120 words. 迅速构思、限时训练(12分钟) 要求：1. 正确使用连接词和高级句式。
2. 书写认真，卷面整洁。
3. 每组一名学生自主到前、后黑板展示。
请根据以上提示，写一篇120字左右的文章 互批互学 ，交流提高 走进2018年山东高考英语作文阅卷室1.先根据文章书写，内容和语言初步确定其为上档（18分
以上)或下档（18分以下)。
2.要点全面，紧扣主题，观点表达充分,有效使用连成
分，具备较强的书面表达能力（加减0-5分）
3. 表达内容的正确性（加减0-5分）大错:语法错误，用词错误 （每错一处扣1分）
小错:单词拼写, 冠词,大小写，标点符号错误 （错三个扣1分）秀出风采，点评提升 让自己在自由的空气里快乐地成长！ 疯狂背诵、强化落实 A层：能牢固记忆所有句子并能用多种方式表达(120%)；
B层：能牢固记忆所有句子(100%)；
C层：能牢固记忆所有句子(100%)。
小组长确保各层达标。
I would be happy to accept the chance to travel to the moon. But if I visited the moon, perhaps I would face many problems. One of the problems I might have: how to stop my food floating away.
I would have to take all my food with me if I went to the moon. As far as we know, in the spaceship there is no gravity so the food would float around if it was solid. So I would make sure that it is specially made as liquid space food.
I can put my liquid space food in a cub and then I would be able to eat it more easily. Perhaps I would use a straw to eat it. It would solve the problem. 当堂检测内容：作文背诵
检查方式： 1. 对桌互查
2. 老师抽查
要求：小组长要做好监督，记录，对不过关者跟踪检查，保证全员全部过关。 Homework
Polish your composition and
hand it in. Summary & Advice from our English monitor:What did we have learnt?
What to do after class to be better?
The best groups and students.Thank you 课件37张PPT。Unit 4 Astronomy:
the science of the starsWarming-up and Pre-readingScience
SubjectsPhysics
Chemistry
Biology
Geology
MathematicsMedicine
Biochemistry
Geophysics
AstronomyLead-in:physicsmathematicschemistrybiologygeographyScience subjectsAstronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it. astronomerThe Big Bang Do you know the solar system?Warming-up地球 ______
木星 ______
火星 ______
水星 ________
海王星 _______F. 冥王星 _______
G. 土星 ________
H. 天王星 _______
I. 金星 ________EarthJupiterMarsMercuryNeptunePlutoSaturnUranusVenus海王星
Saturn 水星
Uranus 金星
Venus 地球
Earth 火星
Mars 木星
Mercury 土星
Jupiter 天王星
Neptune PlutoScientists now think Pluto is
too small to be called a planet.A Quiz Game 1. How old is the earth?
A. About 3.5 billion years
B. About 4.5 billion years
C. About 5.5 billion years
D. About 6.5 billion years
2. ______ of the earth surface is covered
by water.
A. 20% B. 30% C. 50% D. 70%3. How many planets are there in the Solar System?
A. 6 B. 7 C. 8 D. 9
4. What is the total population of humans on the earth?
A. About 3.5 billion B. About 4.5 billion
C. About 5.5 billion D. About 6.5 billion5. How long does the rotation (自转) of the
earth take?
A. 12 hours B. 24 hours C. a month D. 365 days
6. Which continent is the smallest?
A. Africa B. North America
C. South America D. Oceania
7. On what day is the Earth day celebrated?
A. April 22 B. May 4
C. August 21 D. November 118. Which ocean is the largest?
A. The Pacific Ocean
B. The Arctic Ocean
C. The Indian Ocean
D. The Atlantic Ocean
9. Which country has the largest area?
A. Canada B. China
C. Russia D. U.S.APre-readingLook at the picture. Do you know the
topic of this Reading?Water Air Life
Water is the headspring of life.?海洋里的细胞开始分裂 登陆爬行动物恐龙Mammals人类的兴起Questions:1. How do you come to the world ?2. There are many stories or legends about origin of life .Do you know any? Would you like to tell some of the stories ?盘古开天辟地 女娲补天造人 Chinese Legends Pangu separates the sky from the earth.Pangu separates the sky from the earth. 中国神话传说中有盘古开天地的说法。巨人盘古用一把利斧劈开混沌, 将天地分开。死后, 他的气息化成风和云, 声音变成轰轰的雷声, 左眼化为太阳, 右眼化为月亮, 手足与四肢变成大地的四极与五方的名山, 血液化成江河,筋脉铺成道路, 肌肉形成田地, 须发成为星星, 牙齿和骨骼化为金属、珍珠、玉石, 汗水成为滋润万物生长的甘霖和雨露。Nvwa made humans.女
娲
补
天Legend: The Goddess Nuwa mended the heaven and created human beings from the clay(粘土).Other legends about the beginning of universe.In the western culture, who creates everything in the world?The GodReligious Beliefs According to Bible , God created the world in seven days.
The Biblical AccountDay 1: God spoke and separated light from darkness creating Day and Night.
Day 2: God spoke and separated the water creating sky and ocean.
Day 3: God spoke and created dry land. Day 4: God spoke and created the sun, moon and stars.
Day 5: God spoke and created living creatures in the air and sea.
Day 6: God spoke and created the land animals and man.
Day 7: God rested and blessed this day calling it Holy. HomeworkPreview the reading passage
Learn the new words in this part by heart.
