八年級(jí)英語(yǔ)下冊(cè)《Module 3 Unit 2 We have not found life on any other planets yet》課件

Module 3Unit 2We have not found life on any other planets yet.none environment that solar pron.沒有一人；沒有沒有一人；沒有 一個(gè)；一點(diǎn)兒也一個(gè)；一點(diǎn)兒也 沒有沒有 n.環(huán)境環(huán)境 pron.那；那個(gè)（指代那；那個(gè)（指代 已被提及的事物）已被提及的事物）adj.太陽(yáng)的；與太陽(yáng)有太陽(yáng)的；與太陽(yáng)有 關(guān)的關(guān)的Words and expressionssystem solar system group galaxy universe n.系統(tǒng)；體系系統(tǒng)；體系 星系；（尤指）星系；（尤指）太陽(yáng)系太陽(yáng)系 n.群；組群；組 n.星系星系 n.宇宙宇宙Words and expressionslight impossible outcommunicate n.光；光線；光亮光；光線；光亮adj.（事情）辦不（事情）辦不 到的，不可能的到的，不可能的 adv.在遠(yuǎn)方在遠(yuǎn)方 v.聯(lián)系；交流聯(lián)系；交流Words and expressionsA.galaxyB.planet C.solar systemD.star E.universe Match the words with the pictures.ABCDEBDo you know the words and expressions in the box?Put them in order:small large.galaxy planet solar system star universeplanet star solar system galaxy universeSkimming to get general idea1.Anyone out there?2.Life on Earth3.The sun and other stars4.The stars at nightRead the passage and choose the best title for it.Scanning to get detailed informationThe 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 havent.1.What is called the solar system?What is it?2.How many planets are there in the solar system?3.Why dont scientists think theyll find life on the other planets?The sun and its planets are called the solar system.It is a small part of the Galaxy/the Milky Way.The 2nd Para.Questions:There are eight planets.Because none of them has an environment like that of the earth.1.What have scientists discovered?2.Why is it impossible to imagine how large the universe is?Theyve discovered many other galaxies in the universe.Because they are very far away and their light has to travel for many years to reach us.The 3rd Para.Questions:Scientists have _ the planet Mars to _.They have even sent spaceships to _ the solar system.However,no spaceship has travelled _ other stars in our Galaxy.The 4th Para.sent spaceships totake photostravel outsidefar enough to reachCheck()the true sentences.1.The earth is a star.2.The sun is a star.3.There is more than one galaxy in the universe.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.Careful reading to solve difficult points1.Scientists think that there has been life on the earth for hundreds of millions of years.科學(xué)家們認(rèn)為地球上的生命已經(jīng)有上億年科學(xué)家們認(rèn)為地球上的生命已經(jīng)有上億年的歷史。的歷史。hundred前加前加基數(shù)詞基數(shù)詞，表示，表示“一百、二百、一百、二百、三百三百”，hundred要用要用單數(shù)形式單數(shù)形式；hundred與與of連用表示連用表示“數(shù)百數(shù)百”時(shí)，時(shí)，hundred要用復(fù)數(shù)形式，即要用復(fù)數(shù)形式，即hundreds of。例如：例如：There are eight hundred students in our school.There are hundreds of people in the park.We planted _ trees last year.A.hundreds of B.hundred of C.five hundreds D.five hundred ofthousand,million,billion和和hundred的用的用法相同。法相同。Practise2.With so many stars in the universe,are we alone,or is there life out there in space?宇宙中有這么多星球，我們是孤獨(dú)的嗎？宇宙中有這么多星球，我們是孤獨(dú)的嗎？抑或太空中還有其他生命存在呢？抑或太空中還有其他生命存在呢？With so many things to do,we have no time to play.要做的事情這么多，我們都沒時(shí)間玩了。要做的事情這么多，我們都沒時(shí)間玩了。這里這里with so many stars in the universe是是介詞短語(yǔ)，在句中介詞短語(yǔ)，在句中作狀語(yǔ)作狀語(yǔ)。類似的例子。類似的例子還有：還有：The woman stood there with her hands in the pockets.那個(gè)女士站在那里，手插在口袋里。那個(gè)女士站在那里，手插在口袋里。Practise Why do you always sleep _?Because Im afraid of the dark.A.by yourself B.with the door open C.with the window open D.with the light on 3.Why has no one communicated with us?為什么沒有人和我們聯(lián)系呢？為什么沒有人和我們聯(lián)系呢？We rang several times,but no one answered.我們按了幾次鈴，但沒有人來(lái)開門。我們按了幾次鈴，但沒有人來(lái)開門。no one表示表示“沒有人沒有人”，作主語(yǔ)時(shí)，作主語(yǔ)時(shí)，謂語(yǔ)謂語(yǔ)動(dòng)詞常用單數(shù)形式動(dòng)詞常用單數(shù)形式。如：。如：none 指指三個(gè)或三個(gè)以上的人或物中三個(gè)或三個(gè)以上的人或物中“沒沒有一個(gè)有一個(gè)”，其后常接，其后常接“of+名詞名詞/代詞代詞”，后面后面動(dòng)詞單復(fù)數(shù)形式均可動(dòng)詞單復(fù)數(shù)形式均可。None of us has/have been to Sanya.我們都沒去過(guò)三亞。我們都沒去過(guò)三亞。Im hungry.Is there any bread in the fridge?_,but we have cakes.Would you like to have one?A.Some B.Much C.None D.NothingPractiseComplete the passage with the words and expression in the municate 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.solar system noneenvironmentSpaceships from the 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 municateuniverse Theyve just heard a message from one of our spaceships.What have the scientists just received?(a message from one of our spaceships)Look at the picture from a acience story for children and answer the questions.1.Where has the spaceship landed?(Mars)2.What has the spaceship discovered?(people on Mars)3.Why have the people on Mars not sent us a message?(do not know how to)4.Why have the people on Mars not visited us on the earth?(do not know how to)Write a passage to describe the picture.Use your answers to the questions in Activity 5 to help you.We have just received a message from our spaceship to MarsPossible version:Weve just received a message from our spaceship to Mars.Our spaceship has discovered aliens there.They have never sent us a message because they dont know how to communicate with us.They have not visited the earth because they dont 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,etc.We hope they dont do the same with this one!hundreds of millions of go around none of them in the universe far enough communicate with in space本課時(shí)主要短語(yǔ)本課時(shí)主要短語(yǔ)1.However,we have not found life on any other planets yet.2.None of them has an environment like that of the earth.3.Scientists have also discovered many other galaxies in the universe.4.We do not know the answers yet.本課時(shí)主要句型本課時(shí)主要句型Now 2 mins to test your spelling.1.English-Chinese solar system galaxy universe environment group light out2.Chinese-English 聯(lián)系、交流聯(lián)系、交流 沒有一個(gè)沒有一個(gè) （事情）辦不到的，不可能的（事情）辦不到的，不可能的When finished,exchange your papers to see who does the best.注注:word:word 文檔文檔點(diǎn)擊此處鏈接點(diǎn)擊此處鏈接Quiz.用方框中的單詞的正確形式完成下列用方框中的單詞的正確形式完成下列句子。句子。1._ of the students has been to Australia.2.A:How much is your new coat.B:It _ me 150 yuan.billion cost planet alone noneNone cost 3.A:Do you often go online,Zhao Hui?B:No.I like to go online when I am _ at home.4.A:How many people are there in China now?B:It has reached 1.3 _.5.The boy is only five years old,but he knows about many _.alonebillionplanets.用用already,yet,just,ever或或never完成完成下列句子。下列句子。1.I have _ done the heavy work and now I feel very tired.2.Mary,have you read any books about Mars?No,I have _ read a word about it.justnever 3.Have you _ been to the Great Wall in China,Vicky?Of course,I have.4.Dont worry.We have _ helped you sweep the classroom.5.Have you done your work _?Sorry,but I will finish it in one hour.everalreadyyet.下列各句中均有一處錯(cuò)誤，請(qǐng)指出并下列各句中均有一處錯(cuò)誤，請(qǐng)指出并改正。改正。1.My mother isnt in.She has been to the supermarket._ 2.Football is so exciting that million of people in the world play it._ 3.That is very hard to reach the apples on the tree._gonemillionsItHomeworkSearch for more information about universe.1.Preview the use of present perfect tense.2.Preview the new words and expressions about space.