必修3英语第四单元课文分析

Ⅰ 高中必修3第四单元英语课文全文从句解析

有哪位大神会吗？需要求助，拜托了，急着用

Ⅱ 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

Ⅲ 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。

Ⅳ 高中英语必修三第四单元课文第三段的主旨大意

高中英语必修第三四单元课文第三段的主机主旨大意高中必须英语必修三第四几单元的主旨大意是让大家好好学习英语面对外国人的词语运用我们都要好好接受

Ⅳ 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?"

Ⅵ 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。

Ⅶ 英语必修3第四单元课文翻译

没有人知道地球开始到底如果，因为它不是发生在不久之前。然而，根据一项被广泛接受的理论，宇宙始于"大爆炸"令此事全方位方向发展。这之后，原子开始形成，并结合创建星级和其他机构。

几亿年后， "大爆炸" ，地球还只是尘埃云。什么是成为未卜，直到介乎4.5至38.0亿年前，当尘埃落定成固体地球。地球变得如此暴力说，不清楚是否会形成去年与否。爆炸大声与消防和摇滚。他们在时间，以产生碳，氮，水蒸气和其他气体，其中，使地球的大气层。什么是更重要的是，作为地球冷却下来，水开始出现在其表面。

水也出现在其他星球如火星，但不像地球，它已消失了。现在尚不明显，水，是从根本上为发展的生活方式。许多科学家相信的是，持续存在的水，使地球解散有害气体和酸性物质进入海洋。这产生了连锁反应，这使我们可以为生活去发展。

许多百万年来后，第一个非常小的植物开始出现在水面上。他们成倍增加，填补了海洋与氧气，这一切鼓励后来的发展，早在贝类和各种鱼类。其次，绿色的植物开始生长的土地。他们在随后的时间，由土地动物。有的昆虫。其他人，所谓两栖类，分别为能独立生活的土地，以及在水中。后来，当植株生长成森林，爬行动物首次出现的时间。他们制作的，一般青少年所产卵。这之后，一些巨大的动物，所谓的恐龙化石是发达国家。他们开出的鸡蛋太，并存在于地球上超过1.4亿年。不过，六千五百万年前的年龄恐龙结束。他们为何突然失踪，仍是一个谜。这起失踪可能上升的哺乳动物对地球。这些动物均不同于所有的生命形式，在过去，因为他们生下女婴年轻动物和生产的牛奶养活他们。

最后，大约2.6万年前，有些小聪明的动物，现在手和脚出现，并蔓延整个地球。因此，他们已在轮到自己，成为最重要的动物星球。但他们没有照顾到地球是很清楚的。他们把太多的二氧化碳进入大气层，以防止热逃走从地球到太空。由于这一点，许多科学家认为，地球可能成为太热，以现场直播。所以，无论生活中，将继续对地球数百万年来，将取决于是否有这个问题就可以得到解决。

a visit to the moom上个月我很幸运地和我的朋友李燕萍，一位宇航员进行了一次太空之旅。我们在飞船里参观了月球。
在我们离开之前，李燕萍向我解释在我们的旅行中重力将会改变3次，并且第一次将会非常厉害。然后我们出发了。随着火箭升入大气，我们被弹回自己的座位因为我们尽力摆脱地球的重力。我们不能与对方讲话，因为这太难了。渐渐地体重减少了，并且我能与他交谈“为什么飞船没有掉到地面？在地球上如果我从树上掉下来就会摔在地上”“我们现在离地球太远了以至于能忽略它的拉力”他解释道，“因此我们就会感觉这里好像没有重力一样。当我们离月球更近一点时，我们将会感觉到它对我们的拉力，但他并不像地球对我们的那样强”我马上振奋起来，在失重的太空舱里漂浮着看着地球越来越小月球越来越大。
当我们到的时候，我迫不及待地想要去探索。“快来”我说“如果你是对的，我的体重将会比在地球上要轻因为月球比地球小因此我可以很轻松地移动。如果我在这呆的时间足够长，我将会变得更高。我当然会更轻！”我笑着从飞船上爬下来。但当我想往前走时，我发现我走了在地球上的两倍并且摔倒了。“哦，天哪！”我尖叫，“因为重力改变了，需要一些走路的练习。”过了一会儿我找到了窍门然后开始了。
离开月球的重力并没有像离开地球时那么难过。但是回地球时非常吓人。我们看着，惊讶的看着当地球的重力增加时飞船外面起火了。当我们再一次被弹回自己的座位时我们着陆了。“这非常累但也很刺激，”我说“现在我知道了更多关于重力的知识了。你认为我们下次可以参观一些星球吗？”“当然，”他笑着说“你想要参观哪个星球呢？”