译林版英语九下 Unit 4《Life on Mars》第2课时 Reading 课件+音频

Unit 4《Life on Mars 》第2课时 Reading译林版英语九下1.掌握本课重点词汇：planet, polluted, rapid, increase, passenger, uncomfortable, tasty, specially, compare, rapidly, (all) over again, at a/the speed of, in the form of, compare to/with等;2.能讨论22世纪在火星上生活的场景;3.能识别地球生活与火星生活的不同之处。Language goalsWhat’s happening to the earth ?The river isfull of rubbish.The air is polluted.01 Lead in Brain StormWhat’s happening to the earth ?The earth is polluted.huge populationShould we move to another planet?Watch a videoMass(质量)What kind of problems is the scientist talking about? gravity(引力)atmosphere(大气层)temperature(温度)......Daniel wants to find out more about life in space in the future. He has found the following article by a famous scientist who thinks humans could live on Mars by the next century.Firstly,Daniel needs to check the meanings of some words in the article. Help him match the words on the left with the meanings on the right. Write the correct letters in the blanks.Pre-Reading Part AHelp Daniel match the words on the left with the meanings on the right. 1 crowded 2 rapid 3 population 4 all over again5 passenger6 tasty7 specially8 compare________________________________________fhdgbea for one purposeb a second time from the beginningc decide in what way things are similar or differentd having a nice taste e full of peoplef happening in a short period of timeg a person who rides in a car, bus, train, etc. but does not drive ith the total number of people in an area, a country, etc.ac1.This article is a/an_____. A.NarrativeB.ArgumentativeC.Expository Read the passage quickly and finish the tasks. WhyProblems2.What is the structureof the article ?ConclusionAdvantages While-Reading Part ARead part 1(Para. 1) and answer the questions.1、Why would people move to Mars? A、The Earth is crowded and polluted. B、 People want to make friends with those from another planet. C、Flying to Mars would be fun.Carefully ReadingRead part 2(Para. 2) and answer the questions.1. How long does it take to fly to Mars at present? a Hours. b Months. c Years.2.What are the advantages and disadvantages of spacecraft in 2100?It would travel at the speed of light.The journey to Mars might be quite uncomfortable.Read part 2(Para. 3) and finish the tasks.1. What would food on Mars be like? a Very tasty. b Very sweet. c Not very tasty.2.What do humans need to survive?Food, water and oxygen .1. Would gravity be a problem on Mars? a No, it's not a problem. b Yes. Many people would get lost. c Yes, and people would wear special boots.2.What is the gravity of Mars compared to Earth?Read part 2(Para. 3) and finish the tasks.Mars has three -eighths the gravity of Earth.Fill in the blanks according to the part 2(Para. 2-4).By 2100,_____ but _________________not tastyfood _______unsureFastuncomfortable.has ____________ of Earth.three -eighthsRead part 3(Para. 5-6) and fill in the blanks.moreRobotsrelaxonlineRead part 4(Para. 7) and think.interesting ?challenging ?journeyfoodgravityhouses study wateroxygenAdvantagescrowded ChallengingIntertestingMoving to MarsunsureToo slownot tastythree -eighthsOpinionProblemsspaceonlinepollutedtimeFast butuncomfortable.Finish the mind map.04 Post-Reading RetellDaniel is looking for more information on the Internet. Here are keywords he used and the links he got from the search engine. Help him match the keywords with the links. Write the correct letters in the blanks.Part B2Help Daniel match the keywords with the links.a Need someone to teach you any time, any place?b Living in a space house is fun ....c All about the newest spacecraft that travel in space ....d Our shoes can make you walk faster!e Robots could be of great help to people on Mars ....f The population on the Earth is still increasing rapidly ....abced fPart B1Life on the Earth todayIt is polluted and crowded.Spacecraft are slow.There is enough water and oxygen.There are many kinds of tasty food.Gravity is not a problem for us.Many people live in small flats.People have little time to relax.Students study at real schools.Life on Mars in 2100It would be clean and have lots of space.Daniel is making a list of the differences between life on the Earth today and life on Mars in 2100. Spacecraft would travel at the speed of light.There would not be enough water or oxygen.Food would most probably be in the form of pills and would not be so tasty.The gravity is only about three-eighths of that on the Earth.People might live in houses with huge comfortable rooms.People could have more time to relax.Students would study at online schools with “e-teachers”.Part B41. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. more and more 用法Point 105 Language points辨析Point 21. Our own planet, the Earth, is becoming more and more crowded and polluted because of the rapid increase in population. rapid 辨析2.At present, our spacecraft are too slow to carry large numbers of passengers to Mars—it would take months.large numbers of 表示“许多；大量的”，相当于a large number of， Point 分数 3.The gravity on Mars is only about three-eighths of that on the Earth. three-eighthsPoint 4.Compared with life on the Earth, life on Mars would be better in some ways. Compare with辨析Point 推测Point 5.They might live in houses with huge comfortable rooms.might 情态动词，意为“可能，或许”，表示可能性较小的推测。 Advantagescrowded ChallengingIntertestingMoving to MarsunsureToo slownot tastythree -eighthsOpinionProblemsspaceonlinepollutedtimeFast butuncomfortable.06 Summary课程结束