howlife-began-on-theearth公开课PPT课件
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人教版高中英语必修3 Unit4 How life began on the earth 公开课课件
Shorten the text to present the main idea in around 100 words after class.
made the atmosphere
cooled down
water appeared
2.2 Try to sort out the lower words of life based on Para. 4 and 5.
3. What is the real intention of the author’s writing?
A
B C D
1E
F
Hale Waihona Puke HIJ1E
2J
3F
4A
5I
8G 9C
7B
6H
10D
II. Thinking & inquiring
1. Summarize a heading for each paragraph
Para. 1 Para. 2 Para. 3 Para. 4 Para. 5
the origin/formation of the universe the origin/formation of the earth the importance of water for life the development of life on the earth humans’ influence on the earth
III. Sharing and expressing
Discussion: What do you think of the statement of “water is the source of life”? Do you agree with it? Why or why not?
How life began on the earth 阅读课件(公开课)演示教学
[,fΛndə'mentl] Water was to be fundamental to the development of life. be base on
Water allowed the earth to dissove hurmful gases and acids into the oceans. This produced a chain reaction,which made it possible for life to develop.
God created the world in seven days
Some legends about the beginning of universe.
What is the scientific theory about the beginning of life on the earth?
Topic: _H_o_w__L_if_e_B__eg_a_n__o_n__th_e earth
Key words: 1.___a_ir_______ 2.__w_a_t_e_r _____
3.__p_l_an_t_s____ 4.___a_n_im_a_l_s___
Water is the headspring of life.
['reptail]
Reptiles produced young generallyby
laying eggs
['mæməl] Mammals like monkeys gave birth to young baby animals and produced milk to feed them.
The Big Bang
A cloud of dust
人教版高中英语必修三第四单元How Life Began On The Earth-课件
atmosphere
water appeared
Cool down
dissolve harmful gases into …
Part 2:The development of life
Read para4 carefully and make a timeline of the development of life
The development of plants and animals
. Part2:The development of life
Main idea:
The text mainly tells us the formation (form) of the earth and the development (develop)of life on it.
beginning of the universe?
Big Bang
Skimming
➢How many parts can this text be divided into? ➢In what order is this text written?
This passage can be divided into two parts: Part 1 (para1-3): The development of earth. Part 2(para4-5): The development of life. life in the water life on the land
人民教育出版社必修三第四单元 How Life Began On The Earth
Read the title and look at the pictures on the book. Predict what the reading will be about.
How_life_began_on_the_earth_阅读课件(公开课)
New words
The universe began with a “Big Bang”.---The Big Bang Theory
What is the most widely accepted theory about the universe?
Para2: The development of the earth Stage 1: The development of the earth (1) After the Big Bang, what happened?
Explode…with fire & rock
(produce H2O, CO2,O2, N2, other gases)
Cool down
atmosphere
water appeared
Life began and developed
plants-------
animals
Careful-reading
a cloud of dust
a violent solid ball
(2) What happened next?
exploded with fire and rock
produced water vapour and gases
A cloud of dust Combine into a solid ball
reptiles on land
dinosaurs on land
Stage 3: The development of life on land (4) What life developed after dinosaurs?
mammals on land
Stage 4: The development of humans (2) What life developed after mammals?
人教版高中英语必修三第四单元How Life Began On The Earth-课件
early shellfish and all sorts of fish
green plants on land
amphibians
land animals
insects
reptiles
human beings
huge animals (dinosaurs)
the rise of mammals
How did the earth come into being(产生）?
sion produthcee?e
A cloud of dust
settle into a solid globe
Explode…with fire & rock
2 (produce C, N , H2O, and other gases)
atmosphere
water appeared
Cool down
dissolve harmful gases into …
Part 2:The development of life
Read para4 carefully and make a timeline of the development of life
Pre-reading
• Nearly everybody has this or that puzzles: • How do human beings come into being? • How does the earth come into being? • Do you know any ancient idea about the
• You can refer to the chart bellow and begin like this: Good afternoon, I am Dr…. I’m greatly honored to be here to give you a speech about the development of life……
how-life-began-on-the-earth-公开课PPT课件
the earth’s atmosphere
.
14
(4) What appeared after the earth cooled down?
Water appeared on its surface which is
important for the beginning of life on
the earth.
.
8
Para.1 The importance of water for life
Para.2 A theory about how the universe was formed
Para.3 Para.4
The formation(形成） of the earth
Part1: The development of the earth The arrival of humans and their effects on the earth
Unit 4 Astronomy: the science of the stars
.
1
We live on the same planet — the earth
.
2
1. Do you know the origin of life on earth?
2. Each religion or culture has its own ideas about how life began on earth.
were to make? (4) What appeared after the earth cooled
down? (5) What did the water do?
.
11
(1) After the Big Bang, what happened?
人教高中英语必修三 Unit4 How life began on the earth 公开课课件 (共10张PPT)
made the atmosphere
cooled down
water appeared
2.2 Try to sort out the lower words of life based on Para. 4 and 5.
3. What is the real intention of the author’s writing?
Shorten the text to present the main idea in around 100 words after class.
2.1 Look for facts about the development of the earth in para. 2 dust settled into a solid globe
became violent
a violent globe
exploded
fire and rock
produced
A
B C D
1E
F
H
I
J
1E
2J
3F
4A
5I
8G 9C
7B
6H
10D
II. Thinking & inquiring
1. Summarize a heading for each paragraph
Para. 1 Para. 2 Para. 3 Para. 4 Para. 5
the origin/formation of the universe the origin/formation of the earth the importance of water for life the development of life on the earth humans’ influence on the earth
howlifebeganontheearth公开课课件
01
03
在这个过程中，有机物的形态和性质可能发生变化， 但其基本元素（如碳、氢、氧、氮等）在生态系统中
不断循环。
04
生产者（如植物）合成有机物，消费者（如动物）通 过摄食获取有机物，分解者（如细菌和真菌）将有机 物分解为无机物供生产者再利用。
04 从无机到有机：生命前化学演化过程
CHAPTER
能量来源及转化机制
氨基酸 组成蛋白质的基本单元
可通过转氨基作用生成其他氨基酸
氨基酸、核苷酸等关键有机物质
• 在生物体内发挥重要生理功能，如合成组织蛋白、酶、激 素等
氨基酸、核苷酸等关键有机物质
01
核苷酸
02
03
04
组成核酸（DNA和RNA）的 基本单元
在生物体内参与遗传信息的存 储、传递和表达
可作为辅酶参与多种代谢反应
多细胞生物出现
约10亿年前，多细胞生物开始 出现，包括植物、动物和真菌 等。
前寒武纪时期
约40亿年前，地球形成后不久 ，大气中逐渐出现简单的有机 物质。
真核生物出现
约20亿年前，真核生物（如藻 类）开始出现，标志着生物多 样性的增加。
寒武纪生命大爆发
约5.4亿年前，寒武纪时期出 现了大量新的生物种类，生物 多样性迅速增加。
howlifebeganontheearth公 开课课件
汇报人：XX
2024-01-24
目录
CONTENTS
• 地球生命起源概述 • 地球早期环境分析 • 生命物质基础：有机化合物 • 从无机到有机：生命前化学演化过程 • 细胞结构出现与遗传信息传递机制建立 • 多细胞生物崛起和生物多样性形成原因探讨 • 总结回顾与未来展望
遗传多样性
高中英语《How Life Began on the Earth(1)》优质教学课件
S2: Yeah, air pollution is getting more and
poisonous gases;
more serious these days. S1: I couldn’t agree more. People are doing
so much harm to the earth. So what do you think we can do to protect the earth? S2: Well, in my opinion, first, … Second, … Besides, …
ow Life Began o How LifethBeegaEnaornththeEarth
人教版高一英语 必修三
Warming up
Pre-reading
Each culture has its own ideas about how life began on the earth.
What do you know about them?
mammals
哺乳动物
This disappearance made possible the rise of mammals on the earth. These animals were different from all life forms in the past, because they gave birtth to young baby animals and produced milk to feed them.
Finallys,ome small clever animals appeared and spread all over the earth.
人教版高中英语必修三第四单元How Life Began On The Earth-课件
• You can refer to the chart bellow and begin like this: Good afternoon, I am Dr…. I’m greatly honored to be here to give you a speech about the development of life……
Pre-reading
• Nearly everybody has this or that puzzles: • How do human beings come into being? • How does the earth come into being? • Do you know any ancient idea about the
• Fill in the blanks according to the text.
• The earth was just a cloud of dust after the “Big Bang”. The earth exploded(explode) loudly with fire and rock. They were in time to produce many things, which were to make the earth’s atmosphere. As the earth cooled down, water began to appear on its surface. It allowed the earth to dissolve harmful(harm) gases. Then life began to develop.
Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the
Pre-reading
• Nearly everybody has this or that puzzles: • How do human beings come into being? • How does the earth come into being? • Do you know any ancient idea about the
• Fill in the blanks according to the text.
• The earth was just a cloud of dust after the “Big Bang”. The earth exploded(explode) loudly with fire and rock. They were in time to produce many things, which were to make the earth’s atmosphere. As the earth cooled down, water began to appear on its surface. It allowed the earth to dissolve harmful(harm) gases. Then life began to develop.
Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the
Unit4How-life-began-on-the-earth-优秀公开课课件
第18页，共49页。
Study of the groups of life (生命的种类/物种) Look at the pictures and tell the groups .
1.insects 2.plants 3.reptiles（爬行类） 4.shellfish（贝类） 5.fish 6.amphibians（两栖类） 7.mammals(哺乳类)
How life began on the earth
water
1.small ___p_l_a_n_t_s in water
2.__s_h_el_lf_is_h__ and all sorts of fish
human beings
11.____________
3. green plants on land
女娲补天
第3页，共49页。
Saying 3
God __c_r_e_a_te_d__the world in seven days.
第4页，共49页。
Saying 4
The development of Human from__m__o_n_k_e_y.
第5页，共49页。
Saying 5 Life was brought to the earth by
第19页，共49页。
Study of the groups of life (生命的种类/物种) Look at the pictures and tell the groups .
1.insects 2.plants 3.reptiles（爬行类） 4.shellfish（贝类） 5.fish 6.amphibians（两栖类） 7.mammals(哺乳类)
How the earth come into being The problem of the earth caused by human being How the human being build the earth How the life developed on the earth
Study of the groups of life (生命的种类/物种) Look at the pictures and tell the groups .
1.insects 2.plants 3.reptiles（爬行类） 4.shellfish（贝类） 5.fish 6.amphibians（两栖类） 7.mammals(哺乳类)
How life began on the earth
water
1.small ___p_l_a_n_t_s in water
2.__s_h_el_lf_is_h__ and all sorts of fish
human beings
11.____________
3. green plants on land
女娲补天
第3页，共49页。
Saying 3
God __c_r_e_a_te_d__the world in seven days.
第4页，共49页。
Saying 4
The development of Human from__m__o_n_k_e_y.
第5页，共49页。
Saying 5 Life was brought to the earth by
第19页，共49页。
Study of the groups of life (生命的种类/物种) Look at the pictures and tell the groups .
1.insects 2.plants 3.reptiles（爬行类） 4.shellfish（贝类） 5.fish 6.amphibians（两栖类） 7.mammals(哺乳类)
How the earth come into being The problem of the earth caused by human being How the human being build the earth How the life developed on the earth
人教版高中英语必修三第四单元How Life Began On The Earth-课件
4. insects (on land) _a_m__p_h_ib_5_ia._n_s_(on land and in water)
fore6s. ts
rep7ti._le__s__(_o_n__land)
8. dinosaurs (on land) mam9m.__a_ls___(_o_n_ land)
2. What made up(构成) the earth’s atmosphere after the earth exploded? Carbon dioxide, nitrogen, water vapour and other gases.
3. Why is water so important for the beginning of life? Because water allowed the earth to dissolve harmful gases and acids into oceans and seas.
Read para5 carefully and answer the following qestions.
What are the small clever animals? Are they taking care of the earth very well? What problem are humans causing ?
How did the earth come into being(产生）?
sion produthcee?e
A cloud of dust
settle into a solid globe
Explode…with fire & rock
2 (produce C, N , H2O, and other gases)
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that created our universe.
The universe began with a Big Bang.
How life began on the earth
While-reading
Step 1. Fast reading
Read the passage on P25 quickly, and match the right main idea of each paragraph. How many parts can the text be divided into?
Para.5 The development of plants and animals
Part2:The development of life.
( 2 ) Detailed Reading Part 1(1~3): The development of the earth
Part1 (para1~3) The development of the earth
(2) What happened to the solid globe next?
exploded with In time produced water
fire and rock
vapour and gases
(3) What did the water vapour and gases were to make?
(5) What did the water do?
It allowed the earth to dissolve harmful gases and acids into the oceans and seas.
How did the earth come into being(产生）?
Big Bang
How did the earth come into being?
(1) After the Big Bang, what happened? (2) What happened to the solid globe next? (3) What did the water vapour and gases
a cloud of _d_u_s_t _
a solid _ba_l_l/_gl_o_b_e
slowly combine
it exploded loudly with __fi_re__ and __ro_c_k_
the earth’s ___a_tm_o_s_p_h_er_e_ the earth _c_oo_l_ed__ down
4 Cool down 3
dissolve harmful gases
A world full of water
Para.1 The importance of water for life
Para.2 A theory about how the universe was formed
Para.3 Para.4
The formation(形成） of the earth
Part1: The development of the earth The arrival of humans and their effects on the earth
water
According to the pictures, have a try to retell the development of life.
1
Combine into
2
A cloud of energetic dust
A solid ball
Explode with fire and rock
the world and all living things.
Pre-reading
Do you know what a scientific idea is?
The Big Bang
Background knowledge
The Big Bang is the term used to describe a huge explosion that scientists believe happened about 15 billions years ago. Nobody knows what caused the Big Bang. But it was the event
were to make? (4) What appeared after the earth cooled
down? (5) What did the water do?
(1) After the Big Bang, what happened? a cloud of dust Settled into a violent solid ball
In Chinese culture… sky
earth __P_a_n_g_u__盘__古__ separates(分) the sky
from the earth.
_N__u_w_a__(_女__娲__) _ made human beings.
In western countries:
__G__o_d__(上__帝__)___ created
Байду номын сангаасthe earth’s atmosphere
(4) What appeared after the earth cooled down?
Water appeared on its surface which is important for the beginning of life on the earth.
Unit 4 Astronomy: the science of the stars
We live on the same planet — the earth
1. Do you know the origin of life on earth?
2. Each religion or culture has its own ideas about how life began on earth.
The universe began with a Big Bang.
How life began on the earth
While-reading
Step 1. Fast reading
Read the passage on P25 quickly, and match the right main idea of each paragraph. How many parts can the text be divided into?
Para.5 The development of plants and animals
Part2:The development of life.
( 2 ) Detailed Reading Part 1(1~3): The development of the earth
Part1 (para1~3) The development of the earth
(2) What happened to the solid globe next?
exploded with In time produced water
fire and rock
vapour and gases
(3) What did the water vapour and gases were to make?
(5) What did the water do?
It allowed the earth to dissolve harmful gases and acids into the oceans and seas.
How did the earth come into being(产生）?
Big Bang
How did the earth come into being?
(1) After the Big Bang, what happened? (2) What happened to the solid globe next? (3) What did the water vapour and gases
a cloud of _d_u_s_t _
a solid _ba_l_l/_gl_o_b_e
slowly combine
it exploded loudly with __fi_re__ and __ro_c_k_
the earth’s ___a_tm_o_s_p_h_er_e_ the earth _c_oo_l_ed__ down
4 Cool down 3
dissolve harmful gases
A world full of water
Para.1 The importance of water for life
Para.2 A theory about how the universe was formed
Para.3 Para.4
The formation(形成） of the earth
Part1: The development of the earth The arrival of humans and their effects on the earth
water
According to the pictures, have a try to retell the development of life.
1
Combine into
2
A cloud of energetic dust
A solid ball
Explode with fire and rock
the world and all living things.
Pre-reading
Do you know what a scientific idea is?
The Big Bang
Background knowledge
The Big Bang is the term used to describe a huge explosion that scientists believe happened about 15 billions years ago. Nobody knows what caused the Big Bang. But it was the event
were to make? (4) What appeared after the earth cooled
down? (5) What did the water do?
(1) After the Big Bang, what happened? a cloud of dust Settled into a violent solid ball
In Chinese culture… sky
earth __P_a_n_g_u__盘__古__ separates(分) the sky
from the earth.
_N__u_w_a__(_女__娲__) _ made human beings.
In western countries:
__G__o_d__(上__帝__)___ created
Байду номын сангаасthe earth’s atmosphere
(4) What appeared after the earth cooled down?
Water appeared on its surface which is important for the beginning of life on the earth.
Unit 4 Astronomy: the science of the stars
We live on the same planet — the earth
1. Do you know the origin of life on earth?
2. Each religion or culture has its own ideas about how life began on earth.