英语必修三第四单元课件

㈠ 英语必修三第四单元思维导图

网络上找到了一个，仅仅只是课文内容思维导图，语法和单词等没找。

㈡ 英语必修三第四单元课文的名词性从句

地球上生命的起源

没有人确切知道地球是怎样开始形成的，因为在很早很早以前它就形成了。然而，一种普通为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。然后，原子开始形成并结合成恒星和其他天体。

大爆炸后好几十亿年过去了，但地球还只是一团尘埃。随后它会变成什么没人能知道，直到38-45亿年前，这团尘埃才慢慢地形成一个固体的球状物。地球（开始）变得激烈动荡，不知道这个固体形状是否会继续存在下去。它（地球）猛烈的爆炸喷出了烈火与岩石。最终产生了碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。更为重要的是，地球冷却了下来，地球的表面就开始出现了水。

在火星这些其他行星上都出现了水，但和地球不同的是，这些水后来都消失了。水会对生命的发展起关键作用，这一点在当时并不明显。很多科学家相信，由于地球表面上长期有水存在，它使得地球得以把有害气体和酸性物质溶解在海洋里。这就产生了一系列的反应，使得生命就有可能开始发展了。

好几百万年以后，水的表面开始出现了极小的植物。它们繁殖起来就使得早期的海洋充满了氧气，这为早期的贝类及其他各种鱼类的发育进一步创造了条件。接着，绿色是植物开始出现在陆地上。随后，陆地上出现了动物，其中有一些是昆虫，另外一些叫两栖动物，它们一般是通过孵蛋而繁衍后代的。再后来一些叫做恐龙的巨型动物出现了。它们也生蛋，在地球上生存了一亿四千多年。然而，六千五百万年前，恐龙时代结束了。它们为什么会突然灭绝至今仍是个谜。恐龙的灭绝使地球上哺乳动物的产生有了可能。哺乳动物不同于以往所有的生物形式，因为它们能从体内生产出幼仔并给幼仔哺乳。

最后，大约260万年前，一些小巧聪明、长着手脚的动物出现了，它们散布在地球的各个地方。于是，他们接着成为了这个行星上最重要的动物。然而，他们对地球却并不怎么在意。它们把过多的二氧化碳释放到大气层中，这使得地球上的热不能释放到太空中去。因此很多可科学家相信地球可能会因此变得太热而不适合生物的生存。所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。

㈢ 英语必修三第四单元Astronomy:the science of the stars的原文 急!!!在线等！！

HOW LIFE BEGAN ON THE EARTH
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions.After that, atoms began to form and combine to create stars and other bodies.

For several billion years after the "Big Bang", the earth was still just a cloud of st. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when
the st settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. It exploded loudly with fire and rock. They were in
time to proce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere. What is even more important is that as the earth cooled down, water
began to appear on its surface.
Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This proced a chain reaction, which made it possible for life to develop.
Many millions of years later, the first extremely small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow on land. They were followed in time by land animals. Some were insects. Others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared for the first time. They proced young enerally by laying eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However,
65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery. 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 birth to young baby animals and proced milk to feed them.
Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in their turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.

㈣ 求人教版英语必修三Unit4课文全文

(图片格式的)
人教版英语必修三Unit4是第25-32页
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㈤ 高中英语必修三第四单元第一篇课文原文

HOW LIFE BEGAN ON THE EARTH
No one knows exactly how the earth began, as it happened so long ago. However, according to a widely accepted theory, the universe began with a "Big Bang" that threw matter in all directions. After that, atoms began to form and combine to create stars and other bodies.
For several billion years after the "Big Bang", the earth was still just a cloud of st. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the st settled into a solid globe. The earth became so violent that it was not clear whether the shape would last or not. It exploded loudly with fire and rock. They were in time to proce carbon, nitrogen, water vapour and other gases, which were to make the earth's atmosphere. What is even more important is that as the earth cooled down, water began to appear on its surface.
Water had also appeared on other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life. What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. This proced a chain reaction, which made it possible for life to develop.
Many millions of years later, the first extremely small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, which encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow on land. They were followed in time by land animals. Some were insects. Others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared for the first time. They proced young entirely by laying eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However,65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remains a mystery. 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 birth to young baby animals and proced milk to feed them.
Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in their turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
给分。

㈥ 英语必修三第四单元课文后28到29页作业

1. CABC A B CDCDA CDB D B CBA
2. （1）What has happened: We have just moved
（2);This has not been easy
(.3); I have… put
(4); I have ever seen
(5) What has beenhappening: I have been working
(6);I have been trying
(7) haveexplained…have understood…Have you been listening…has been working/ hasworked…has been earning/ has earned…has she earned…have not been listening
3. 1 carefully 2 hard 3 hard 4 late 5 nearly 6fast 7 high

㈦ 高一英语必修3第四单元所有课文

Reading 2 Last month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer. We visited the moon in our spaceship!
Before we left, Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful. Then we were off. As the rocket rose into the air, we were pushed back into our seats because we were trying to escape the pull of the earth's gravity. It was so hard that we could not say anything to each other. Graally the weight lessened and I was able to talk to him. "Why is the spaceship not falling back to the earth? On the earth if I fall from a tree I will fall to the ground." I asked. "We are too far from the earth now to feel its pull," he explained, "so we feel as if there is no gravity at all. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be as strong a pull as the earth's." I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.
When we got there, I wanted to explore immediately. "Come on," I said. "If you are right, my mass will be less than on the earth because the moon is smaller and I will be able to move more freely. I might even grow taller if I stay here long enough. I shall certainly weigh less!" I laughed and climbed down the steps from the spaceship. But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. "Oh dear," I cried, "walking does need a bit of practice now that gravity has changed." After a while I got the hang of it and we began to enjoy ourselves.
Leaving the moon's gravity was not as painful as leaving the earth's. But returning to the earth was very frightening. We watched, amazed as fire broke out on the outside of the spaceship as the earth's gravity increased. Again we were pushed hard into our seats as we came back to land. "That was very exhausting but very exciting too," I said. "Now I know much more about gravity! Do you think we could visit some stars next time?" "Of course," he smiled, "which star would you like to go to?"

㈧ 人教版英语必修三第四单元单词表

Unit 4
statement n. 陈述；说明
greet vi. & vt. 迎接；问候
represent vt. 代表；象征
association n. 社团；联系；联想
dormitory n. 宿舍
canteen n. 食堂
flight n. 飞行；航班
curious adj. 好奇的
curiously adv. 好奇地
△Garcia 加西亚（姓）
Colombia n. 哥伦比亚（南美洲国家）
approach vt. & vi. 接近；靠近；走近
n. 接近；方法；途径
cheek n. 面颊
defend vt. 保护；保卫
defend against 保卫……以免受
defence n. 防御；保卫
major adj. 主要的
misunderstand vt. (misunderstood,
misunderstood)
误解，误会
misunderstanding n. 误解；误会
△Akira Nagata 永田明
△Ahmed Aziz 艾哈迈德•阿齐兹
Jordan n. 约旦（西亚国家）
△Darlene Coulon 达琳•库隆
dash vi. 猛冲；突进
alt n. 成人；成年人
adj. 成人的；成熟的
△simply adv. 简单地；只
△Muslim n. & adj. 穆斯林（的）；伊斯兰教信徒（的）
spoken adj. 口语的
unspoken adj. 未说出口的；非口语的
△posture n. 姿态；体态
Spain n. 西班牙（欧洲国家）
Italy n. 意大利（欧洲国家）
likely adj. 可能的
be likely to 很可能……；有希望……
in general 总的来说；通常
crossroads n. 十字路口
△employee n. 雇员
△frown vi. 皱眉；蹙额
△misread vt. （misread /misread）读错；误解
facial adj. 面部的
function n. 作用；功能；职能
vi. 起作用；运转
ease n. 安逸；舒适
vt. 减轻（痛苦；忧虑）
at ease 舒适；快活；自由自在
truly adv. 真实地；真诚地；真正地
false adj. 错误的；假的
anger n. 怒气；怒火
lose face 丢脸
turn one’s back to 背对；背弃
fist n. 拳头
yawn vi. 打呵欠
△respectful adj. 恭敬的
subjective adj. 主观的
hug vi. & vt. 拥抱
rank n. 等级；军衔
cassette n. 磁带

㈨ 求外语教学与研究出版社 英语必修三第四单元第二篇课文是the green movement发清楚的

Cultural Corner
The Green Movement
Some countries are better than others at looking after the environment. In Europe, Germany and the northern European countries work very hard to improve the environment. People in countries such as Germany put their garbage into different bags—paper in one bag, plastic in another bag, etc. The garbage is then taken away and, if possible, recycled. CFCs (chlorofluro-carbons), chemicals which are found in refrigerators and aerosol cans, are not allowed. There are laws that do not allow people to burn too much coal.
In the 1970s, as people learnt more about environmental problems, the "Green" movement began and soon spread all over Europe. The "Green" movement tries to get governments to think seriously about the environment and how to look after it. It collects information about how instry is damaging the environment and gives this information to newspapers.

虽然不是截图,但绝对是全对的, 一字不漏!