外研版英语八年级下册Module 3 Unit 2教学课件 55页

Module 3 Journey to space Unit 2 We have not found life on any other planets yet. 外研·八年级下册 none environment that solar system solar system pron.没有一人；没有 一个，一点也没有 n.环境 pron.那，那个 adj.太阳的 n.系统，体系 星系，太阳系 New words and phrases group galaxy universe light impossible out communicate n.群，组 n.星系 n.宇宙 n.光；光线；光亮 adj.不可能的，办不到的 adv.在远方 v.联系，交流 universe galaxy solar system star planet Do you know the words and expressions in the box? Put them in order: small — large. A. galaxy B. planet C. solar system D. star E. universe B — D — C — A — E 1. How many planets are there in the universe? 2. Is there any life on other planets? Discuss Reading and vocabulary Work in pairs. Look at the picture and talk about what you know about Chinese spaceships. 1 Shenzhou-9 is a manned spaceship. Who were on the spaceship? Jing Haipeng, Liu Wang and Liu Yang. When did it land on the space? On June 16, 2012. ... ... ___________________ Scientists think that there has been life on earth for hundreds of millions of years. However, we have not found life on any other planets yet. Read the passage and choose the best title for it. 2 数亿，数以亿计 在其它的行星上 The earth is a planet and it goes around the sun. Seven other planets also go around the Sun. None of them has an environment like that of the earth, so scientists do not think they will find life on them. The sun and its planets are called the solar system, 绕太阳转 他们中没有人 被叫做 太阳系 and our solar system is a small part of a much larger group of stars and planets, called the Galaxy or the Milky Way. There are billions of stars in the Galaxy, and our sun is only one of them. 一小部分 Scientists have also discovered many other galaxies in the universe. They are very far away and their light has to travel for many years to reach us. So how large is the universe? It is impossible to imagine. 在宇宙中 It is impossible (for sb.) to do sth. 对某人来说做某事是不可能的 Scientists have sent spaceships to the planet Mars to take photos. They have even sent spaceships to travel outside the solar system. However, no spaceship has travelled far enough to reach other stars in our Galaxy. 太阳系 Scientists have always asked the questions: with so many stars in the universe, are we alone, or is there life out there in space? Have there been visitors to the earth from other planets? Why has no one communicated with us? We do not know the answers… yet. 和某人联系 When you read a passage with a title and pictures, think about the words you may find in the passage, and the questions you may want to ask before you start to read. 1. Anyone out there? 2. Life on Earth 3. The sun and other stars 4. The stars at night Read the passage and choose the best title for it. Task 1 Enjoy a video. Check(√) the true sentences.3 1. The earth is a star. 2. The sun is a star. 3. There is more than one galaxy in the universe. √ √ ×plant Task 2 × × 4. The light from the stars in other galaxies has travelled for a long time to reach us. 5. Scientists have received many messages from space. 6. Spaceships have visited most of the universe. √ haven’t haven’t The 1st Para. Questions: 1. How long has there been life on the earth? 2. Have we found life on any other planets yet? There has been life on the earth for hundreds of millions of years. No, we haven’t. Task 3 1.What is called the solar system? What is it? It is a small part of the Galaxy / the Milky Way. The 2nd Para. Questions: The sun and its planets are called the solar system. 2. Why don’t scientists think they’ll find life on the other planets? Because none of them has an environment like that of the earth. Task 4 Because they are very far away and their light has to travel for many years to reach us. The 3rd Para. Questions: 1. What have scientists discovered? 2. Why is it impossible to imagine how large the universe is? They’ve discovered many other galaxies in the universe. Task 5 The 4th Para. Fill in the blanks. Scientists have ______ spaceships to the planet Mars to ____________. They have even sent spaceships to _____________ the solar system. However, no spaceship has travelled ___________ to reach other stars in our Galaxy. sent take photos travel outside far enough Task 6 Complete the passage with the words and expression in the box.4 communicate environment none solar system universe Is there life on other planets? There are seven other planets in our (1) ___________, but (2)______ of them has a(n) (3)_____________ like that of the earth. Spaceships from the solar system none environment Task 7 communicate environment none solar system universe earth have done surveys of the other planets, but they have not found any life there. Why has no one from other planets tried to (4) ____________ with us? It is true that scientists have not discovered life on other planets in the (5)_________ yet, but some scientists believe that they will find it some day. communicate universe Language points 1. Scientists think that there has been life on the earth for hundreds of millions of years. üon the earth 在地球上 on earth 世界上；究竟 üfor +时间段，表示一段时间，用how long来提问。 — _________ do you sleep everyday, Eric? — For about eight hours. A. How much　　　 B. How fast　　　 C. How often D. How long 中考链接 ühundred 前加基数词，表示“一百、二百、三 百……”，hundred要用单数形式；hundred与 of连用表示“数百”时，hundred 要用复数形 式，即hundreds of。 thousand, million, billion和hundred的用法相同。 2. None of them has an environment like that of the earth... ünone“没有一个”做主语时，谓语动词可用 单数形式或复数形式。 none 与of连用表示范围，后接不可数名词做 主语时，谓语动词只能用单数形式。 注意：none 与no one/nobody的区别： (⑴) none既可指人也可指物，通常与表范围的of 短 语连用；no one/nobody只能指人，不能与of短 语连用。(2) none与数量有关，可回答how many问句，表 示“一个也没有”；而no one表示“什么人也 没有”，可回答who问句。 — I tried several ways to work out the math problem, but ______ of them worked. — Never give up! I believe you’ll make it. A. all　　　 B. each　　　 C. none D. neither 中考链接 üthat是指示代词。为避免重复，可用 that 或 those 来代替前面已提到过的人或事物。 The population of Shanghai is much larger than ______ of Nanning.that enough的用法： 3. However, no spaceship has traveled far enough to reach other stars in our Galaxy. ... enough ... + to do sth. 做某事……是足够的 adj./ adv. + enough + to do sth. 足够……做某事 not + adj./ adv. + enough + to do sth. 不够……做某事 (1) 我们有足够的钱花。 We have _____________________. (2) 他跑得够快，很快追上了我们。 He ran ______________ catch up with us soon. (3) 他年龄不够大，照顾不了自己。 He _________________________________. enough money to spend fast enough to isn’t old enough to look after himself 演练 — We shouldn’t worry about Mary. — You are right. She is ______ to look after ______. A. old enough; herself B. big enough; herself　　　 C. enough old; her D. enough big; her 中考链接 • with +宾语+ 宾语补足语，是with的复合结构， 在句中作状语，表示伴随。宾语补足语可由现 在分词、过去分词、副词、动词不定式或介词 短语等来充当。 4. With so many stars in the universe, are we alone... With so many things to do, we have no time to play. — Why do you always sleep ______? — Because I’m afraid of the dark. A. by yourself B. with the door open C. with the window open D. with the light on 中考链接 • alone作形容词， 意为“孤单的，独自的”， 只能作表语。 我独自在教室里。 I was alone in the classroom. • alone还可作副词，意为“只有；仅仅；单独地”。 你不能仅靠面包维生。 You can’t live on bread alone. 辨析：alone与lonely alone侧重于说明独自一人，没有人陪伴，不 强调主观感情；而lonely形容人时，则表示情感 上“孤独的；寂寞的”，常作表语。 串记：My grandmother lives alone, but he doesn’t feel lonely. Writing Look at the picture from a science story for children and answer the questions.5 What have the scientists just received? (a message from one of our spaceships) They have just received a message from one of our spaceships. 1. Where has the spaceship landed? (Mars) It has landed on Mars. 2. What has the spaceship discovered? (people on Mars) It has discovered people on Mars. 4. Why have the people on Mars not visited us on the earth? (do not know how to) They do not know how to visit us on the earth. 3. Why have the people on Mars not sent us a message? (do not know how to) They do not know how to send us a message. Write a passage to describe the picture. Use your answers to the questions in Activity 5 to help you. 6 We have just received a message from our spaceship to Mars … Possible answer We have just received a message from our spaceship to Mars. Our spaceship has discovered aliens there. They have never sent us a message because they don’t know how to communicate with us. They have not visited the earth because they don’t know how to fly to our planet, and they prefer life on Mars. They seem very happy on their planet. They have used parts from the other spaceships from the earth to make TVs, radios and so on. We hope they will live happily with us one day! 一、根据句意或者括号所给的中文提示填写单词。 Exercise 1. There is the earth, the sun, the moon and many other stars in the u________. 2. We should try our best to protect the e___________. niverse nvironment 3. I want to know how they _____________ (交流) in the past. 4. It’s ___________(不可能的) for you to do it. 5. The old man is a____. No one lives with him. communicated impossible lone 1. — The 15th Chinese Bridge — Chinese Proficiency Competition will be held this year. — That’s great! _________ foreign college students are interested in Chinese learning. A. Hundred of B. Thousands C. Hundred D. Thousands of 二、单项选择。 2. Though he stays _______ at home, he doesn’t feel _______ for he has many things to do. A. alone; lonely B. lonely; alone C. alone; alone D. lonely; lonely 3. The environment in the village is better than _______ in the city. A. it B. this C. one D. that