【预习】仁爱版九年级英语上册 Unit 4 Topic 2 知识汇总
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往期知识汇总：
| Unit 1 Topic 1 | Unit 1 Topic 2 | Unit 1 Topic 3 |
| Unit 2 Topic 1 | Unit 2 Topic 2 | Unit 2 Topic 3 |
| Unit 3 Topic 1 | Unit 3 Topic 2 | Unit 3 Topic 3 |
| Unit 4 Topic 1 |
01 Unit4 Topic2 单词
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| display | v.显示,显露;展示 |
| screen | n.屏幕;银幕 |
| alien | n.外星人 adj.陌生的;外国的;外星的 |
| describe | v.描述;形容;把……称为 |
| astronaut | n.宇航员 |
| admire | v.钦佩,羡慕 |
| master | v.掌握,精通 n.主人 |
| dancer | n.跳舞者,舞蹈演员 |
| realize | v.(realise BrE)意识到,领会;实现 |
| universe | n.宇宙 |
| solar system | 太阳系 |
| Roman | adj.古罗马的,古罗马帝国的 |
| god | n.上帝;神 |
| storm | n.风暴,暴(风)雨 |
| gravity | n. 重力；引力 |
| weigh | v.重,有……重 |
| generally | adv.一般地,通常 |
| journey | n.(尤指长途)旅行 |
| limit | v.限制,限定 n.限度;限制 |
| excitement | n.激动;令人激动的事 |
| launch | v.发射;发起;发行 |
| beyond | prep.超出;除……之外 |
| outer space | 外层空间 |
| diameter | n.直径 |
02 Unit4 Topic2 课文视频
p89-1a 动画：
p91-1a 动画：
p93-1a 动画：
03 Unit4 Topic2知识梳理
词形转换：1.weigh v. 重，有……重 weight n.重量2.excite v.激动，使(人)兴奋 excited adj.激动的，兴奋的 exciting adj.令人激动的 excitement n.激动，令人激动的事3.discover v.发现 discovery n.发现4.dry v.使……干燥 adj.干燥的5.supply n.[U]供应；[C]供应品 v.供应6.worth prep. 值…… n.价值 worthy adj.有价值的 worthless adj.无价值的
重点句型：1.A wonderful movie will be shown tonight. 一场精彩的电影今天晚上将被上映。2.We will be able to do anything that can be done on the earth. 我们将能够做一切在地球上能够被做的事情。3.I think you should first master some basic computer skills. 我认为你首先应该掌握一些基本的电脑技能。4.Let’s work hard. Then our dreams will be realized. 让我们努力学习吧。那么我们的梦想就会实现。5.What’s it about? 它是关于什么的？6.--What are you going to be? --I’m not sure. Sometimes I want to be a dancer, but I think I’m going to be a scientist in the future. --你打算成为什么？ --我不确定。有时候我想成为一个舞蹈家，但我想在将来我打算成为一个科学家。7.Some spaceships have gone beyond the solar system. 一些宇宙飞船已经超出了太阳系。
【重点语法】
一般过去时的被动语态
谓语部分的基本形式是be的过去式was/were+及物动词的过去分词。如：
When was it made? 它是什么时候制造的？
It was made in 1980.它是1980年制造的。
When was the digital camera invented? 数码像机是什么时候发明的？
It was invented in 1975. 它是1975年发明的。
时间前所用介词的速记歌
年月周前要用in，日子前面却不行。 遇到几号要用on，上午下午又是in。
要说某日上下午，用on换in才能行。 午夜黄昏须用at，黎明用它也不错。
at也用在时分前，说“差”可要用上to。
说“过”只可使用past，多说多练牢牢记，莫让岁月成蹉跎。
【话题写作】
假设你是王强，你们班最近举行了一次主题班会：太空探险的意义。请根据下表的内容，介绍所讨论的情况并发表自己的观点。(80词左右)
【参考范文】Recently we have had a discussion on whether it is necessary to carry out outer space explorations at a class meeting. Some of us think it is important to research the outer space. First, people can get a better understanding of the outer space through the explorations. Second, new resources can be found there for humans to use. Third, the explorations can possibly bring about new living space for human life.However, others don’t believe so. They think this kind of explorations cost too much money. And it is very dangerous for astronauts to do such work.I think people should do the explorations and such explorations into the outer space are worth trying out.
04 Unit4 Topic2同步翻译
SectionA-1a
Kangkang: Hi, Maria! A wonderful movie will be shown tonight. Shall we go to watch it?
康康：嗨，马丽亚！今晚有一部很棒的电影要上映。我们一起去看怎么样？
Maria: Great! What's it about?
马丽亚：好呀！是关于什么的？
Kangkang: It's about life in space.
康康：关于太空生活的。
Maria: That sounds exciting.
马丽亚：听起来很不错。
Kangkang: Yes. All the people travel by spaceship in the movie, and they can visit planets like Mars.
康康：是的。电影里的人们都坐着太空飞船移动，他们还可以到火星这样的的星球上去。
Maria: Really? Kangkang, do you think people will live on Mars in the future?
马丽亚：是吗？康康，你觉得以后人们会住在火星上吗？
Kangkang: Yes, I think we will live in space one day.
康康：嗯，我觉得有一天我们都会在太空生活。
Houses, schools and hospitals will be built on Mars.
房子、学校和医院都会建在火星上。
We will be able to do anything that can be done on the earth.
在地球上能做的事也能在火星上做。
Maria: What fun! I can't wait.
马丽亚：太有趣了！我等不及了。
Kangkang:Maria, have you heard the news on TV about the space flight to Mars?
康康：马丽亚，你有没有听电视上关于飞往火星的新闻呀？
Maria:No, I haven't. Who will take part in the space flight?
马丽亚：还没有。谁会参与太空飞行？
Kangkang:Astronauts from China, the United States and Russia. They will travel into space and discover something new about Mars. I really admire them. I'd like to be an astronaut when I grow up.
康康：中国、美国和俄罗斯的宇航员。他们将飞往太空，探索火星。我真羡慕他们。我长大以后相当宇航员。
Maria:It's really cool. However, I think you should first master some basic computer skills.
马丽亚：很好。不过我觉得你应该先掌握一些基础的电脑知识。
Kangkang:Sure. Maria, what are you going to be?
康康：当然。马丽亚，你以后想做什么？
Maria:Mm, I am not sure. Sometimes I want to be a dancer, but I think I'm going to be a scientist in the future.
马丽亚：嗯，不太确定。有时候我想当个舞蹈家，但我觉得我以后会是科学家。
Kangkang:Why? I think you dance very well.
康康：为什么？我觉得你舞跳的很好。
Maria:Yes, I'm sure I can perform ballet on the stage in the future. But I prefer science to dance. It is my favorite subject in school. I'm excited about the things that will be discovered in the future.
马丽亚：嗯，我相信将来能在舞台上表演芭蕾。但跟芭蕾相比，我更喜欢科学。这是我在学校最喜欢的一科。我很期待以后会有什么新发现。
Kangkang:That's wonderful! Let's work hard. Then our dreams will be realized.
康康：太好了！我们一起努力实现梦想。
What do you know about Mars? What does it look like? Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war. Its diameter is 53% as wide as that of the earth. Mars goes around the sun at a distance of about 228 million kilometers.
关于火星你了解多少？火星是什么样的？火星是太阳系中距离太阳第四的星球，以罗马战神的名字“Mars”命名。火星的直径是地球的53%。火星在距离太阳2.28亿千米的轨道上绕行。
You can tell which planet is Mars because it is bright red in the night sky. It looks like a red and orange ball. It's very beautiful. But during spring and summer, the surface of Mars is covered by strong storms.
火星在夜空中是明亮的红色，很好识别。它看起来像一个橘红色的大球。很漂亮。但是春夏季时，火星表面覆盖有厚厚的云层。
The gravity on the surface of Mars is about two-fifths as strong as it is on the earth. So a person who weight 90 kilos on the earth weights only 36 kilos on Mars. The temperature on Mars is between -138℃ and 28℃. The air has only 0.13% oxygen.
火星表面的重力大概是地球的1/5。所以在地球上有90公斤重的人在火星上只有36公斤。火星上的温度大约在-138℃ 到 28℃之间。空气中含氧量只有0.13%。
It takes a spaceship about eight months to reach Mars from the earth when the two planets are closest to each other. Scientists are still searching for more information about Mars.
火星与地球相距最近时，宇宙飞船需要八个月才能从地球抵达火星。科学家们还在探索更多关于火星的信息。
Scientists think that there has been life on the earth for millions of years. However, we haven't found life on other planets yet. The earth is a planet and it goes around the sun. And there are seven other planet that also go around the sun.
科学家认为生命已经在地球上存在了数百万年。但是，人类还没有在其他星球上发现生命。地球是行星，围绕太阳运行。还有另外七个行星也绕着太阳运行。
The sun and its planets are called the solar system. The solar system is a small part of the universe.
太阳以及围绕它运行的行星被称为太阳系。太阳系只是宇宙的一小部分。
Scientists have launched many spaceships to explore other planets in the solar system. Some spaceships have gone beyond the solar system. However, no one has discovered any life in space yet.
科学家们发射了很多宇宙飞船，去探索太阳系中的其他星球。有些宇宙飞船已经飞出了太阳系。但是，还没有人在太空中发现任何生命。
Why has no one from other planets sent us a message? Have they tried to send information to us? With so many stars in space, are we alone, or is there life on other planets in space?
为什么其他星球上没有任何人给我们发信息呢？他们有试过给我们发信息吗？太空中有这么多行星，我们是唯一的生命吗？还是其他星球上也有生命？
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